A kind of solar cell frame with quick detection gas
Technical field
The present invention relates to field of solar energy, is more particularly to a kind of solar-electricity pool side with quick detection gas
Frame.
Background technology
Solar cell frame, also known as solar components frame, refer to the aluminium alloy type that solar cell panel assembly is formed
Material fixed frame or stent.Its main function is fixed, seals solar cell module, extends its service life etc..
However, since the extensive use of solar cell is, it is necessary to which it adapts to different environment, such as the inspection to environmental gas
Brake etc..
The content of the invention
It is an object of the invention to avoid shortcoming of the prior art and providing a kind of has quick detection gas work(
The solar cell frame of energy.
The purpose of the present invention is achieved through the following technical solutions:
A kind of solar cell frame with quick detection gas, solar cell frame outer surface installation
Detection device, the detection device are based on self energizing sensing element, which includes dye sensitization of solar electricity
Pond module and gas sensor module;Dye sensitization of solar module can be right as the working power of gas sensor module
It produces the effect of self energizing, and then can realize the quick inspection to pernicious gas in working environment residing for solar cell frame
Survey, high sensitivity, and repeatability is high, while achieve the purpose that efficiently to utilize solar energy.
The dye sensitization solar cell module includes to electrode, light anode and is filled in described to electrode and light sun
Electrolyte between pole, it is described electrode is included stainless steel base, close to stainless steel base conductive catalytic layer, be arranged at it is described
Carbon nanotubes on conductive catalytic layer, the light anode include ITO electro-conductive glass substrate and in ITO electro-conductive glass substrates
TiO2Particle and dye molecules, the TiO2The particle diameter of particle about 85nm, the length to carbon nanotubes on electrode are 9 μm;
The gas sensor module includes silicon chip substrate, tungsten oxide nano and Au electrodes, corrodes on the surface of the silicon chip substrate
There is Porous Silicon area, the surface evaporation of the Porous Silicon area has tungsten oxide layer film with porous silicon together as detection gas
Composite sensitive material, the aperture of the porous silicon is 10~30nm;The dye sensitization solar cell module and gas sensing
Device module be arranged at surface have an a diameter of 0.5cm air admission hole specification be 5cm × 5cm × 1cm aluminum cuboid frame
In frame, the dye sensitization solar cell module, to the outer surface of the frame, and makes light anode court by adhesive bonding
On, the gas sensor module, data read module are arranged at the lower portion, the dye-sensitized solar cells mould
Block, the gas sensor module are connected with data read module by conducting wire.
Preferably, the making of the dye sensitization solar cell module includes the following steps:
S1:It is prepared by electrode:1. selecting the stainless steel base that the specification that thickness is 0.3mm is 5cm × 5cm, thrown with sand paper
Light, is cleaned by ultrasonic successively by acetone, ethanol, deionized water;2. metal Cr is plated in stainless steel base using magnetron sputtering method
Film and Ni films form conductive catalytic layer, and the thickness of the Cr films is 300nm, and the thickness of the Ni films is 15nm;3. utilize CVD
Method, CH4For carbon source, Ni is catalyst, grows carbon nanotubes;
S2:The preparation of light anode:1. taking absolute ethyl alcohol 50ml, ethylene glycol amine 2ml respectively, make it in 50 DEG C of stirred in water bath
It is sufficiently mixed, butyl titanate 9ml is added in mixed solution, 1h is stirred in continuation in a water bath, then adds absolute ethyl alcohol 10ml,
1h is stirred in a water bath, is stood 12h, is obtained TiO2Solution, is filtered, dry;2. take the TiO of 5g steps 1. middle drying2Grain
Son, the mixing of 10ml ethanol, 2ml acetylacetone,2,4-pentanediones, are put into mortar and grind abundant, obtained TiO2Slurry;It is 3. suitable in taking step 2.
The TiO of amount2The specification of slurry blade coating after cleaning is in the ITO electro-conductive glass substrates of 5cm × 5cm, by being handled at 110 DEG C
2h, is then immersed in 6h in the ethanol solution of N719, up to light anode;
S3:Electrolyte quota:0.5M lithium iodides, 0.06M iodine, the tertiary yl pyridines of 0.1M 4- and 0.3M 1- propyl group -3- methyl
Iodonium imidazolide salts, solvent are volume ratio 1:1 acetonitrile and propylene carbonate mixed liquor;
S4:Assembling:Electrode will be covered in light anode, and form 50 μm of cavity between the two, edge utilizes insulator
Encapsulation, injects the electrolyte into cavity, forms dye sensitization solar cell module;
The preparation of the gas sensor module comprises the following steps:
1. cutting silicon chip substrate size to 2cm × 2cm, it is put into cleaning solution and is cleaned by ultrasonic 40min, cleaning solution is volume ratio
For 3:1 98% concentrated sulfuric acid and 40% hydrogen peroxide;Take out silicon chip substrate to be rinsed well with deionized water, place into hydrofluoric acid and soak
10min is steeped, then is cleaned by ultrasonic 20min respectively with acetone, ethanol, deionized water successively;
2. using electrochemical process corrosion of silicon, corrosive liquid is prepared, corrosive liquid is volume ratio 1:3 hydrofluoric acid (40%) and go
The mixed liquor of ionized water, corrosion current 45mA/cm2, etching time 1h, formed on silicon chip substrate surface size 1.5cm ×
The Porous Silicon area of 1cm;
3. silicon chip substrate is put into magnetic control sputtering device, one layer of tungsten film is deposited in its porous silicon region field surface, thickness is
Silicon chip substrate, is then put into tube furnace by 200nm, seals and is passed through nitrogen under normal pressure, utilizes 450 DEG C of growth tungsten oxides of CVD method
Nano wire;
4. the Au electrodes of two round point shapes, the diameter of the Au electrodes are made on Porous Silicon area using magnetron sputtering method
For 1mm, thickness 100nm.
The data read module is sent to the controller being arranged inside the detection device by wireless communication module
Module, the controller module communicated by wireless communication module and GPRS module, and will be detected by the detection device
Data value is transmitted to detection data basestation;
Further, the self energizing sensing element is additionally provided with a gas identification module, the gas identification module
Connected by conducting wire with the data read module, the gas identification module mainly connects by shell body and with shell body detachable
The gas detection means connect are formed, and the gas detection means are made of diffusion control film layer, instruction support powder and glass tube;
The preparation process of the gas detection means is as follows:
S1:The processing and activation of carrier:The silica-gel carrier sieved (90~100 mesh) is placed in 600 DEG C of Muffle furnaces
2h is calcined, after cooling, bottling is stand-by;
S2:Indicate the preparation of carrier:Measure a certain amount of original liquid to be put into a container, pour into a certain amount of activation and carry
Body, it is stirring while adding, until being uniformly mixed, untill supernatant liquor is less.After spontaneously drying in atmosphere, it is fitted into closed container
It is stand-by;
S3:The preparation of glass tube:Select internal diameter is uniform, glass tube that transparency is good (specification for ID2.0mm ×
OD4.0mm), some sections of the glass tube that length is 30mm is intercepted into, with sand paper by both sides feather plucking, then successively with suds, clear
Water, distilled water are clean by glass tube cleaning, dry stand-by;
S4:The preparation of diffusion control film:Film is controlled as diffusion using the polyester film of 0.5mm thickness, after polymer PET drying,
The circular membrane for being 2.0mm into outside diameter with mould punching;
S5:The assembling of gas identification module:By the diffusion control film side of adhesive bonding to glass tube, then weigh
Certain amount instruction support powder slowly loads in glass tube to glass tube tight, and another side diffusion control film is bonded after smooth.
The invention has the beneficial effects that:
(1) present invention is based on dye-sensitized solar cells technology and gas sensor technology, designs the gas of self energizing
Sensor, i.e., provide the energy of working sensor with dye-sensitized solar cells;By dye-sensitized solar cells with it is porous
Silicon substrate gas sensor is connected, including solar module, sensor assembly, data read module and gas detection module;
Solar cell is used as the working power of sensor by solar power generation, and the effect of self energizing is produced to gas sensor,
Solar energy resources has been maximally utilized, has reduced energy waste and environmental pollution.
(2) in dye-sensitized solar cells in electrode, generally use Pt is used as to electrode catalyst agent material, still
Platinum is a kind of noble metal, expensive, and the present invention substitutes Pt as catalyst using carbon nanotubes, makes simple, catalytic efficiency
Height, it is cheap;Manufacturing cost substantially reduces, and is conducive to widely popularize application;In addition, gas sensor module is adopted in the present invention
It is sensitive material with porous silicon, while tungsten oxide layer film, porous silica material and tungsten oxide material knot is deposited in porous silicon surface
Cooperate as composite sensitive material, can in quick environment-identification gas situation of change, high sensitivity is convenient and efficient.
(3) present invention is provided with a gas identification module that can identify gas type behind data read module,
The instruction support powder used in the gas detection means set in the module quickly judges gas type, when its work is run
It is not required dye sensitization solar cell module to provide energy, overall save has saved the energy, and realizes passive detection row
Deflation body;It is efficient and convenient.
Brief description of the drawings
Invention is described further using attached drawing, but the embodiment in attached drawing does not form any limitation of the invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to the following drawings
Its attached drawing.
Fig. 1 is the schematic diagram of solar cell frame of the present invention.
Fig. 2 is the structure diagram of the dye sensitization solar cell module of the present invention.
Fig. 3 is the gas sensor module schematic top plan view of the present invention.
Fig. 4 is the sectional view of the gas sensor module of the present invention.
Fig. 5 is the dye sensitization solar cell module of the present invention and the combination schematic diagram of gas sensor module.
Fig. 6 is the structure diagram of the gas identification module of the present invention.
Embodiment
In general, after gas component of the sensing element in gas sensor in extraneous test environment changes,
Its physical quantity being measured accordingly can also change, and gas sensor detects changed specific gas componant
Come, and then converted the change of the electric signal of reflection gas componant change, such as resistance, capacitance, dielectric etc..
Porous silicon is a kind of material with open structure, it can be aoxidized by monocrystalline silicon or polysilicon in hydrofluoric acid
To be made.Porous silicon has the advantages that good optical property, huge surface area, and at present, porous silicon is to humidity, You Jiqi
Body, NOX、COX、O2, HCl etc. show detection property.Gas sensor using porous silicon as sensitive material, is mainly inhaled using it
The change of electrical conductivity carrys out detection gas after attached gas.When porous silicon is placed in detected gas environment, gas can be in porous silicon
Suction-operated occurs for surface, and gas molecule can capture hole or electronics from porous silicon surface, cause the resistance of porous silicon to become
Change, the change by measuring porous silicon resistor or conductance can measure the change of under test gas concentration.
There are following technical problem for gas sensor in presently relevant technology:Gas sensor at work, it is necessary to
External power supply or battery drive its work, largely can cause environmental pollution and energy waste using battery, have to environment latent
Harm, therefore, it is necessary to seek a kind of new gas sensor of environmental protection and energy saving.Solar energy is as a kind of sustainable new
The energy, is the basis of human survival and development.In future, solar power generation is by as the main energy sources form of human society.At present,
Solar cell mainly in the form of silicon solar cell, dye-sensitized solar cells and organic solar batteries, wherein, market
The silicon solar cell that upper major part is monocrystalline and polysilicon is representative, although it is high, performance stabilization excellent with transformation efficiency
Point, but when preparing silicon solar cell, refining high-purity silicon material needs to expend mass energy.
Under sunlight irradiation, dye molecule absorbs luminous energy, it is excited to excitation state by eigenstate, due to excitation state
Unstable, its excitation state electrons is transferred to the conductive layer that Nanometer Semiconductor Films pass through light anode from dye molecule, and then
To external circuit;The dye molecule for losing electronics can be by I in neighbouring electrolyte-Revert to eigenstate, and I-Ion is oxidized to
I3-, electronics is transferred to electrode from external circuit, under the action of catalyst, by I in electrolyte3-It is reduced to I-, so circulation.
Based on this, the operation principle of device of the present invention is:Dye-sensitized solar cells and gas sensor, digital independent
Block coupled in series.Under sunlight, dye molecule absorbs luminous energy in dye-sensitized solar cells, is excited, the electronics of release
External circuit is flowed to by light anode, is formed into a loop by porous silicon-base gas sensor, data detection module, to electrode, warp
The catalytic action of carbon nanotubes is crossed, goes back I in original electrolyte3-Ion, is thusly-formed working cycles;For gas sensor, in quilt
Under detection gas environment, porous silicon and tungsten oxide meeting adsorption gas molecule, cause its electrical conductivity to change, and then act on electricity
The change of stream, at this time data monitoring module can detect change, finally show the gas concentration in real time.
The present invention provides a kind of solar cell frame with quick detection gas, outside the solar cell frame
Portion surface installation detecting device, the detection device are based on self energizing sensing element, and it is quick which includes dyestuff
Change solar module and gas sensor module;Dye sensitization of solar module can be as the work of gas sensor module
Make power supply, the effect of self energizing is produced to it, and then can realize to being harmful to gas in working environment residing for solar cell frame
The quick detection of body, high sensitivity, and repeatability is high, while achieve the purpose that efficiently to utilize solar energy.
Further explanation is made to the present invention with reference to legend:
Fig. 1 is solar cell frame schematic diagram of the present invention.Detection device 2 is installed on the outside of solar cell frame 1
Surface.
Fig. 2 is the structure diagram of the dye sensitization solar cell module of the present invention.
Fig. 3 is the gas sensor module schematic top plan view of the present invention.
Fig. 4 is the sectional view of the gas sensor module of the present invention.
Fig. 5 is the dye sensitization solar cell module of the present invention and the combination schematic diagram of gas sensor module.
Fig. 6 is the structure diagram of the gas identification module of the present invention.
Wherein:The stainless steel bases of 10-, 11- silicon chip substrates, 12- silicon chip substrates, 13- dye sensitization solar cell modules,
20- conductive catalytic layers, 21- Porous Silicon areas, 23- gas sensor modules, 30- electrolyte, 31-Au electrodes, 32- tungsten oxides are received
Rice noodles, 33- data read modules, 40-ITO electro-conductive glass substrates, 43- frames, 50- is to carbon nanotubes on electrode, 53- air inlets
Hole, 60-TiO2Particle layer and dye molecules, 70- gas identification modules, 71- shell bodies, 72- gas detection means, 73- expand
Dissipate control film layer, 74- instruction support powders, 75- glass tubes.
The invention will be further described with the following Examples.
Embodiment 1
A kind of solar cell frame with quick detection gas that the embodiment of the present invention is provided, the sun
The outer surface installation detecting device of energy battery frame, the detection device is based on self energizing sensing element, and further includes number
According to read module and gas identification module;The self energizing sensing element includes dye sensitization solar cell module and gas sensing
Device module;The dye sensitization solar cell module includes to electrode, light anode and is filled in described to electrode and light sun
Electrolyte between pole, it is described electrode is included stainless steel base, close to stainless steel base conductive catalytic layer, be arranged at it is described
Carbon nanotubes on conductive catalytic layer, the light anode include ITO electro-conductive glass substrate and in ITO electro-conductive glass substrates
TiO2Particle and dye molecules, the TiO2The particle diameter of particle about 85nm,;The gas sensor module include silicon chip substrate,
Tungsten oxide nano and Au electrodes, on the surface of the silicon chip substrate corrosion have Porous Silicon area, the table of the Porous Silicon area
Face evaporation has composite sensitive material of the tungsten oxide layer film with porous silicon together as detection gas;The dye sensitization of solar
Battery module and gas sensor module be arranged at surface have an a diameter of 0.5cm air admission hole specification for 5cm × 5cm ×
In the cuboid framework of the aluminum of 1cm, the dye sensitization solar cell module passes through adhesive bonding to the frame
Outer surface, and make light anode upward, the gas sensor module, data read module are arranged at the lower portion, described
Dye sensitization solar cell module, the gas sensor module are connected with data read module by conducting wire.
Preferably, the making of the dye sensitization solar cell module includes the following steps:
S1:It is prepared by electrode:1. selecting the stainless steel base that the specification that thickness is 0.3mm is 5cm × 5cm, thrown with sand paper
Light, is cleaned by ultrasonic successively by acetone, ethanol, deionized water;2. metal Cr is plated in stainless steel base using magnetron sputtering method
Film and Ni films form conductive catalytic layer, and the thickness of the Cr films is 500nm, and the thickness of the Ni films is 10nm;3. utilize CVD
Method, CH4For carbon source, Ni is catalyst, grows carbon nanotubes;
S2:The preparation of light anode:1. taking absolute ethyl alcohol 50ml, ethylene glycol amine 2ml respectively, make it in 50 DEG C of stirred in water bath
It is sufficiently mixed, butyl titanate 9ml is added in mixed solution, 1h is stirred in continuation in a water bath, then adds absolute ethyl alcohol 10ml,
1h is stirred in a water bath, is stood 12h, is obtained TiO2Solution, is filtered, dry;2. take the TiO of 5g steps 1. middle drying2Grain
Son, the mixing of 10ml ethanol, 2ml acetylacetone,2,4-pentanediones, are put into mortar and grind abundant, obtained TiO2Slurry;It is 3. suitable in taking step 2.
The TiO of amount2The specification of slurry blade coating after cleaning is in the ITO electro-conductive glass substrates of 5cm × 5cm, by being handled at 110 DEG C
2h, is then immersed in 6h in the ethanol solution of N719, up to light anode;
S3:Electrolyte quota:0.5M lithium iodides, 0.06M iodine, the tertiary yl pyridines of 0.1M 4- and 0.3M 1- propyl group -3- methyl
Iodonium imidazolide salts, solvent are volume ratio 1:1 acetonitrile and propylene carbonate mixed liquor;
S4:Assembling:Electrode will be covered in light anode, and form 50 μm of cavity between the two, edge utilizes insulator
Encapsulation, injects the electrolyte into cavity, forms dye sensitization solar cell module;
The preparation of the gas sensor module comprises the following steps:
1. cutting silicon chip substrate size to 2cm × 2cm, it is put into cleaning solution and is cleaned by ultrasonic 40min, cleaning solution is volume ratio
For 3:1 98% concentrated sulfuric acid and 40% hydrogen peroxide;Take out silicon chip substrate to be rinsed well with deionized water, place into hydrofluoric acid and soak
10min is steeped, then is cleaned by ultrasonic 20min respectively with acetone, ethanol, deionized water successively;
2. using electrochemical process corrosion of silicon, corrosive liquid is prepared, corrosive liquid is volume ratio 1:3 hydrofluoric acid (40%) and go
The mixed liquor of ionized water, corrosion current 45mA/cm2, etching time 1h, formed on silicon chip substrate surface size 1.5cm ×
The Porous Silicon area of 1cm;
3. silicon chip substrate is put into magnetic control sputtering device, one layer of tungsten film is deposited in its porous silicon region field surface, thickness is
Silicon chip substrate, is then put into tube furnace by 200nm, seals and is passed through nitrogen under normal pressure, utilizes 450 DEG C of growth tungsten oxides of CVD method
Nano wire;
4. the Au electrodes of two round point shapes, the diameter of the Au electrodes are made on Porous Silicon area using magnetron sputtering method
For 1mm, thickness 100nm.
The data read module is sent to the controller being arranged inside the detection device by wireless communication module
Module, the controller module communicated by wireless communication module and GPRS module, and will be detected by the detection device
Data value is transmitted to detection data basestation;
Further, the self energizing sensing element is additionally provided with a gas identification module, the gas identification module
Connected by conducting wire with the data read module, the gas identification module mainly connects by shell body and with shell body detachable
The gas detection means connect are formed, and the gas detection means are made of diffusion control film layer, instruction support powder and glass tube;
The preparation process of the gas detection means is as follows:
S1:The processing and activation of carrier:The silica-gel carrier sieved (90~100 mesh) is placed in 600 DEG C of Muffle furnaces
2h is calcined, after cooling, bottling is stand-by;
S2:Indicate the preparation of carrier:Measure a certain amount of original liquid to be put into a container, pour into a certain amount of activation and carry
Body, it is stirring while adding, until being uniformly mixed, untill supernatant liquor is less.After spontaneously drying in atmosphere, it is fitted into closed container
It is stand-by;
S3:The preparation of glass tube:Select internal diameter is uniform, glass tube that transparency is good (specification for ID2.0mm ×
OD4.0mm), some sections of the glass tube that length is 30mm is intercepted into, with sand paper by both sides feather plucking, then successively with suds, clear
Water, distilled water are clean by glass tube cleaning, dry stand-by;
S4:The preparation of diffusion control film:Film is controlled as diffusion using the polyester film of 0.5mm thickness, after polymer PET drying,
The circular membrane for being 2.0mm into outside diameter with mould punching;
S5:The assembling of gas identification module:By the diffusion control film side of adhesive bonding to glass tube, then weigh
Certain amount instruction support powder slowly loads in glass tube to glass tube tight, and another side diffusion control film is bonded after smooth.
Test data:
In obtained device, the length to carbon nanotubes on electrode of dye-sensitized solar cells is about 9 μm, and gas passes
The aperture of porous silicon about 10~30nm in sensor;During test, which is put into 1m3Light tight hermetical testing container, take
100mW/cm2Xenon source simulated solar irradiation, the NO of various concentrations is passed through into test container respectively2Gas.
The sensitivity of gas is represented with following formula:R%=(I0±It/I0) × 100%, in formula, in the feelings that light source power is constant
Under condition, I0Not to be passed through NO2When device in size of current, ItTo be passed through NO2Size of current when testing gas in device.
Test obtains, the optimal transformation efficiency about 11.6% of dye-sensitized solar cells, and test is sent out after repeating 2000 times
Existing, dye-sensitized solar cells transformation efficiency drops to 9.3%, reproducible;When about 40 DEG C of gas sensor operating temperature
When, its selectivity and sensitivity to gas is put up the best performance, wherein, to NO2The detection limit of gas is 5ppm, to 100ppm
NO2, sensitivity 72, response time 7s;To NH3The detection limit of gas is 5ppm, to the NH of 100ppm3, sensitivity reaches
56, response time 4s.
Embodiment 2:
A kind of solar cell frame with quick detection gas that the embodiment of the present invention is provided, the sun
The outer surface installation detecting device of energy battery frame, the detection device is based on self energizing sensing element, and further includes number
According to read module and gas identification module;The self energizing sensing element includes dye sensitization solar cell module and gas sensing
Device module;The dye sensitization solar cell module includes to electrode, light anode and is filled in described to electrode and light sun
Electrolyte between pole, it is described electrode is included stainless steel base, close to stainless steel base conductive catalytic layer, be arranged at it is described
Carbon nanotubes on conductive catalytic layer, the light anode include ITO electro-conductive glass substrate and in ITO electro-conductive glass substrates
TiO2Particle and dye molecules, the TiO2The particle diameter of particle about 38nm;The gas sensor module include silicon chip substrate,
Tungsten oxide nano and Au electrodes, on the surface of the silicon chip substrate corrosion have Porous Silicon area, the table of the Porous Silicon area
Face evaporation has composite sensitive material of the tungsten oxide layer film with porous silicon together as detection gas;The dye sensitization of solar
Battery module and gas sensor module be arranged at surface have an a diameter of 0.5cm air admission hole specification for 5cm × 5cm ×
In the cuboid framework of the aluminum of 1cm, the dye sensitization solar cell module passes through adhesive bonding to the frame
Outer surface, and make light anode upward, the gas sensor module, data read module are arranged at the lower portion, described
Dye sensitization solar cell module, the gas sensor module are connected with data read module by conducting wire.
Preferably, the making of the dye sensitization solar cell module includes the following steps:
S1:It is prepared by electrode:1. selecting the stainless steel base that the specification that thickness is 0.3mm is 5cm × 5cm, thrown with sand paper
Light, is cleaned by ultrasonic successively by acetone, ethanol, deionized water;2. metal Cr is plated in stainless steel base using magnetron sputtering method
Film and Ni films form conductive catalytic layer, and the thickness of the Cr films is 300nm, and the thickness of the Ni films is 7nm;3. CVD method is utilized,
CH4For carbon source, Ni is catalyst, grows carbon nanotubes;
S2:The preparation of light anode:1. taking absolute ethyl alcohol 50ml, ethylene glycol amine 2ml respectively, make it in 50 DEG C of stirred in water bath
It is sufficiently mixed, butyl titanate 9ml is added in mixed solution, 1h is stirred in continuation in a water bath, then adds absolute ethyl alcohol 10ml,
1h is stirred in a water bath, is stood 12h, is obtained TiO2Solution, is filtered, dry;2. take the TiO of 5g steps 1. middle drying2Grain
Son, the mixing of 10ml ethanol, 2ml acetylacetone,2,4-pentanediones, are put into mortar and grind abundant, obtained TiO2Slurry;It is 3. suitable in taking step 2.
The TiO of amount2The specification of slurry blade coating after cleaning is in the ITO electro-conductive glass substrates of 5cm × 5cm, by being handled at 110 DEG C
2h, is then immersed in 6h in the ethanol solution of N719, up to light anode;
S3:Electrolyte quota:0.5M lithium iodides, 0.06M iodine, the tertiary yl pyridines of 0.1M 4- and 0.3M 1- propyl group -3- methyl
Iodonium imidazolide salts, solvent are volume ratio 1:1 acetonitrile and propylene carbonate mixed liquor;
S4:Assembling:Electrode will be covered in light anode, and form 30 μm of cavity between the two, edge utilizes insulator
Encapsulation, injects the electrolyte into cavity, forms dye sensitization solar cell module;
The preparation of the gas sensor module comprises the following steps:
1. cutting silicon chip substrate size to 2cm × 2cm, it is put into cleaning solution and is cleaned by ultrasonic 40min, cleaning solution is volume ratio
For 3:1 98% concentrated sulfuric acid and 40% hydrogen peroxide;Take out silicon chip substrate to be rinsed well with deionized water, place into hydrofluoric acid and soak
10min is steeped, then is cleaned by ultrasonic 20min respectively with acetone, ethanol, deionized water successively;
2. using electrochemical process corrosion of silicon, corrosive liquid is prepared, corrosive liquid is volume ratio 2:3 hydrofluoric acid (40%) and go
The mixed liquor of ionized water, corrosion current 40mA/cm2, etching time 2h, formed on silicon chip substrate surface size 1.5cm ×
The Porous Silicon area of 1cm;
3. silicon chip substrate is put into magnetic control sputtering device, one layer of tungsten film is deposited in its porous silicon region field surface, thickness is
Silicon chip substrate, is then put into tube furnace by 200nm, seals and is passed through nitrogen under normal pressure, utilizes 450 DEG C of growth tungsten oxides of CVD method
Nano wire;
4. the Au electrodes of two round point shapes, the diameter of the Au electrodes are made on Porous Silicon area using magnetron sputtering method
For 1mm, thickness 60nm.
The data read module is sent to the controller being arranged inside the detection device by wireless communication module
Module, the controller module communicated by wireless communication module and GPRS module, and will be detected by the detection device
Data value is transmitted to detection data basestation;
Further, the self energizing sensing element is additionally provided with a gas identification module, the gas identification module
Connected by conducting wire with the data read module, the gas identification module mainly connects by shell body and with shell body detachable
The gas detection means connect are formed, and the gas detection means are made of diffusion control film layer, instruction support powder and glass tube;
The preparation process of the gas detection means is as follows:
S1:The processing and activation of carrier:The silica-gel carrier sieved (90~100 mesh) is placed in 600 DEG C of Muffle furnaces
2h is calcined, after cooling, bottling is stand-by;
S2:Indicate the preparation of carrier:Measure a certain amount of original liquid to be put into a container, pour into a certain amount of activation and carry
Body, it is stirring while adding, until being uniformly mixed, untill supernatant liquor is less.After spontaneously drying in atmosphere, it is fitted into closed container
It is stand-by;
S3:The preparation of glass tube:Select internal diameter is uniform, glass tube that transparency is good (specification for ID2.0mm ×
OD4.0mm), some sections of the glass tube that length is 30mm is intercepted into, with sand paper by both sides feather plucking, then successively with suds, clear
Water, distilled water are clean by glass tube cleaning, dry stand-by;
S4:The preparation of diffusion control film:Film is controlled as diffusion using the polyester film of 0.5mm thickness, after polymer PET drying,
The circular membrane for being 2.0mm into outside diameter with mould punching;
S5:The assembling of gas identification module:By the diffusion control film side of adhesive bonding to glass tube, then weigh
Certain amount instruction support powder slowly loads in glass tube to glass tube tight, and another side diffusion control film is bonded after smooth.
Test data:
In obtained device, the length to carbon nanotubes on electrode of dye-sensitized solar cells is about 7 μm, and gas passes
The aperture of porous silicon about 5~25nm in sensor;During test, which is put into 1m3Light tight hermetical testing container, take
100mW/cm2Xenon source simulated solar irradiation, the NO of various concentrations is passed through into test container respectively2Gas.
The sensitivity of gas is represented with following formula:R%=(I0±It/I0) × 100%, in formula, in the feelings that light source power is constant
Under condition, I0Not to be passed through NO2When device in size of current, ItTo be passed through NO2Size of current when testing gas in device.
Test obtains, the optimal transformation efficiency about 10.2% of dye-sensitized solar cells, and test is sent out after repeating 2000 times
Existing, dye-sensitized solar cells transformation efficiency drops to 8.1%, reproducible;When about 40 DEG C of gas sensor operating temperature
When, its selectivity and sensitivity to gas is put up the best performance, wherein, to NO2The detection limit of gas is 12ppm, right
The NO of 100ppm2, sensitivity 52, response time 9s;To NH3The detection limit of gas is 9ppm, to the NH of 100ppm3, it is sensitive
Degree is up to 50, response time 6s.
Embodiment 3
A kind of solar cell frame with quick detection gas that the embodiment of the present invention is provided, the sun
The outer surface installation detecting device of energy battery frame, the detection device is based on self energizing sensing element, and further includes number
According to read module and gas identification module;The self energizing sensing element includes dye sensitization solar cell module and gas sensing
Device module;The dye sensitization solar cell module includes to electrode, light anode and is filled in described to electrode and light sun
Electrolyte between pole, it is described electrode is included stainless steel base, close to stainless steel base conductive catalytic layer, be arranged at it is described
Carbon nanotubes on conductive catalytic layer, the light anode include ITO electro-conductive glass substrate and in ITO electro-conductive glass substrates
TiO2Particle and dye molecules, the TiO2The particle diameter of particle about 55nm;The gas sensor module include silicon chip substrate,
Tungsten oxide nano and Au electrodes, on the surface of the silicon chip substrate corrosion have Porous Silicon area, the table of the Porous Silicon area
Face evaporation has composite sensitive material of the tungsten oxide layer film with porous silicon together as detection gas;The dye sensitization of solar
Battery module and gas sensor module be arranged at surface have an a diameter of 0.5cm air admission hole specification for 5cm × 5cm ×
In the cuboid framework of the aluminum of 1cm, the dye sensitization solar cell module passes through adhesive bonding to the frame
Outer surface, and make light anode upward, the gas sensor module, data read module are arranged at the lower portion, described
Dye sensitization solar cell module, the gas sensor module are connected with data read module by conducting wire.
Preferably, the making of the dye sensitization solar cell module includes the following steps:
S1:It is prepared by electrode:1. selecting the stainless steel base that the specification that thickness is 0.3mm is 5cm × 5cm, thrown with sand paper
Light, is cleaned by ultrasonic successively by acetone, ethanol, deionized water;2. metal Cr is plated in stainless steel base using magnetron sputtering method
Film and Ni films form conductive catalytic layer, and the thickness of the Cr films is 260nm, and the thickness of the Ni films is 15nm;3. utilize CVD
Method, CH4For carbon source, Ni is catalyst, grows carbon nanotubes;
S2:The preparation of light anode:1. taking absolute ethyl alcohol 50ml, ethylene glycol amine 2ml respectively, make it in 50 DEG C of stirred in water bath
It is sufficiently mixed, butyl titanate 9ml is added in mixed solution, 1h is stirred in continuation in a water bath, then adds absolute ethyl alcohol 10ml,
1h is stirred in a water bath, is stood 12h, is obtained TiO2Solution, is filtered, dry;2. take the TiO of 5g steps 1. middle drying2Grain
Son, the mixing of 10ml ethanol, 2ml acetylacetone,2,4-pentanediones, are put into mortar and grind abundant, obtained TiO2Slurry;It is 3. suitable in taking step 2.
The TiO of amount2The specification of slurry blade coating after cleaning is in the ITO electro-conductive glass substrates of 5cm × 5cm, by being handled at 110 DEG C
2h, is then immersed in 6h in the ethanol solution of N719, up to light anode;
S3:Electrolyte quota:0.5M lithium iodides, 0.06M iodine, the tertiary yl pyridines of 0.2M 4- and 0.3M 1- propyl group -3- methyl
Iodonium imidazolide salts, solvent are volume ratio 1:1 acetonitrile and propylene carbonate mixed liquor;
S4:Assembling:Electrode will be covered in light anode, and form 50 μm of cavity between the two, edge utilizes insulator
Encapsulation, injects the electrolyte into cavity, forms dye sensitization solar cell module;
The preparation of the gas sensor module comprises the following steps:
1. cutting silicon chip substrate size to 2cm × 2cm, it is put into cleaning solution and is cleaned by ultrasonic 40min, cleaning solution is volume ratio
For 3:1 98% concentrated sulfuric acid and 40% hydrogen peroxide;Take out silicon chip substrate to be rinsed well with deionized water, place into hydrofluoric acid and soak
10min is steeped, then is cleaned by ultrasonic 20min respectively with acetone, ethanol, deionized water successively;
2. using electrochemical process corrosion of silicon, corrosive liquid is prepared, corrosive liquid is volume ratio 1:5 hydrofluoric acid (40%) and go
The mixed liquor of ionized water, corrosion current 20mA/cm2, etching time 1h, formed on silicon chip substrate surface size 1.5cm ×
The Porous Silicon area of 1cm;
3. silicon chip substrate is put into magnetic control sputtering device, one layer of tungsten film is deposited in its porous silicon region field surface, thickness is
Silicon chip substrate, is then put into tube furnace by 200nm, seals and is passed through nitrogen under normal pressure, utilizes 450 DEG C of growth tungsten oxides of CVD method
Nano wire;
4. the Au electrodes of two round point shapes, the diameter of the Au electrodes are made on Porous Silicon area using magnetron sputtering method
For 1mm, thickness 100nm.
The data read module is sent to the controller being arranged inside the detection device by wireless communication module
Module, the controller module communicated by wireless communication module and GPRS module, and will be detected by the detection device
Data value is transmitted to detection data basestation;
Further, the self energizing sensing element is additionally provided with a gas identification module, the gas identification module
Connected by conducting wire with the data read module, the gas identification module mainly connects by shell body and with shell body detachable
The gas detection means connect are formed, and the gas detection means are made of diffusion control film layer, instruction support powder and glass tube;
The preparation process of the gas detection means is as follows:
S1:The processing and activation of carrier:The silica-gel carrier sieved (90~100 mesh) is placed in 600 DEG C of Muffle furnaces
2h is calcined, after cooling, bottling is stand-by;
S2:Indicate the preparation of carrier:Measure a certain amount of original liquid to be put into a container, pour into a certain amount of activation and carry
Body, it is stirring while adding, until being uniformly mixed, untill supernatant liquor is less.After spontaneously drying in atmosphere, it is fitted into closed container
It is stand-by;
S3:The preparation of glass tube:Select internal diameter is uniform, glass tube that transparency is good (specification for ID2.0mm ×
OD4.0mm), some sections of the glass tube that length is 30mm is intercepted into, with sand paper by both sides feather plucking, then successively with suds, clear
Water, distilled water are clean by glass tube cleaning, dry stand-by;
S4:The preparation of diffusion control film:Film is controlled as diffusion using the polyester film of 0.5mm thickness, after polymer PET drying,
The circular membrane for being 2.0mm into outside diameter with mould punching;
S5:The assembling of gas identification module:By the diffusion control film side of adhesive bonding to glass tube, then weigh
Certain amount instruction support powder slowly loads in glass tube to glass tube tight, and another side diffusion control film is bonded after smooth.
Test data:
In obtained device, the length to carbon nanotubes on electrode of dye-sensitized solar cells is about 9 μm, and gas passes
The aperture of porous silicon about 5~50nm in sensor;During test, which is put into 1m3Light tight hermetical testing container, take
100mW/cm2Xenon source simulated solar irradiation, the NO of various concentrations is passed through into test container respectively2Gas.
The sensitivity of gas is represented with following formula:R%=(I0±It/I0) × 100%, in formula, in the feelings that light source power is constant
Under condition, I0Not to be passed through NO2When device in size of current, ItTo be passed through NO2Size of current when testing gas in device.
Test obtains, the optimal transformation efficiency about 10.3% of dye-sensitized solar cells, and test is sent out after repeating 2000 times
Existing, dye-sensitized solar cells transformation efficiency drops to 7.7%, reproducible;When about 40 DEG C of gas sensor operating temperature
When, its selectivity and sensitivity to gas is put up the best performance, wherein, to NO2The detection limit of gas is 16ppm, right
The NO of 100ppm2, sensitivity 51, response time 21s;To NH3The detection limit of gas is 13ppm, to the NH of 100ppm3, spirit
Sensitivity is up to 29, response time 17s.
Embodiment 4
A kind of solar cell frame with quick detection gas that the embodiment of the present invention is provided, the sun
The outer surface installation detecting device of energy battery frame, the detection device is based on self energizing sensing element, and further includes number
According to read module and gas identification module;The self energizing sensing element includes dye sensitization solar cell module and gas sensing
Device module;The dye sensitization solar cell module includes to electrode, light anode and is filled in described to electrode and light sun
Electrolyte between pole, it is described electrode is included stainless steel base, close to stainless steel base conductive catalytic layer, be arranged at it is described
Carbon nanotubes on conductive catalytic layer, the light anode include ITO electro-conductive glass substrate and in ITO electro-conductive glass substrates
TiO2Particle and dye molecules, the TiO2The particle diameter of particle about 80nm;The gas sensor module include silicon chip substrate,
Tungsten oxide nano and Au electrodes, on the surface of the silicon chip substrate corrosion have Porous Silicon area, the table of the Porous Silicon area
Face evaporation has composite sensitive material of the tungsten oxide layer film with porous silicon together as detection gas;The dye sensitization of solar
Battery module and gas sensor module be arranged at surface have an a diameter of 0.5cm air admission hole specification for 5cm × 5cm ×
In the cuboid framework of the aluminum of 1cm, the dye sensitization solar cell module passes through adhesive bonding to the frame
Outer surface, and make light anode upward, the gas sensor module, data read module are arranged at the lower portion, described
Dye sensitization solar cell module, the gas sensor module are connected with data read module by conducting wire.
Preferably, the making of the dye sensitization solar cell module includes the following steps:
S1:It is prepared by electrode:1. selecting the stainless steel base that the specification that thickness is 0.3mm is 5cm × 5cm, thrown with sand paper
Light, is cleaned by ultrasonic successively by acetone, ethanol, deionized water;2. metal Cr is plated in stainless steel base using magnetron sputtering method
Film and Ni films form conductive catalytic layer, and the thickness of the Cr films is 350nm, and the thickness of the Ni films is 15nm;3. utilize CVD
Method, CH4For carbon source, Ni is catalyst, grows carbon nanotubes;
S2:The preparation of light anode:1. taking absolute ethyl alcohol 50ml, ethylene glycol amine 2ml respectively, make it in 50 DEG C of stirred in water bath
It is sufficiently mixed, butyl titanate 5ml is added in mixed solution, 1h is stirred in continuation in a water bath, then adds absolute ethyl alcohol 10ml,
1h is stirred in a water bath, is stood 12h, is obtained TiO2Solution, is filtered, dry;2. take the TiO of 5g steps 1. middle drying2Grain
Son, the mixing of 10ml ethanol, 6ml acetylacetone,2,4-pentanediones, are put into mortar and grind abundant, obtained TiO2Slurry;It is 3. suitable in taking step 2.
The TiO of amount2The specification of slurry blade coating after cleaning is in the ITO electro-conductive glass substrates of 5cm × 5cm, by being handled at 110 DEG C
2h, is then immersed in 6h in the ethanol solution of N719, up to light anode;
S3:Electrolyte quota:0.5M lithium iodides, 0.06M iodine, the tertiary yl pyridines of 0.1M 4- and 0.3M 1- propyl group -3- methyl
Iodonium imidazolide salts, solvent are volume ratio 1:1 acetonitrile and propylene carbonate mixed liquor;
S4:Assembling:Electrode will be covered in light anode, and form 50 μm of cavity between the two, edge utilizes insulator
Encapsulation, injects the electrolyte into cavity, forms dye sensitization solar cell module;
The preparation of the gas sensor module comprises the following steps:
1. cutting silicon chip substrate size to 2cm × 2cm, it is put into cleaning solution and is cleaned by ultrasonic 40min, cleaning solution is volume ratio
For 3:1 98% concentrated sulfuric acid and 40% hydrogen peroxide;Take out silicon chip substrate to be rinsed well with deionized water, place into hydrofluoric acid and soak
10min is steeped, then is cleaned by ultrasonic 20min respectively with acetone, ethanol, deionized water successively;
2. using electrochemical process corrosion of silicon, corrosive liquid is prepared, corrosive liquid is volume ratio 2:3 hydrofluoric acid (40%) and go
The mixed liquor of ionized water, corrosion current 48mA/cm2, etching time 1h, formed on silicon chip substrate surface size 1.5cm ×
The Porous Silicon area of 1cm;
3. silicon chip substrate is put into magnetic control sputtering device, one layer of tungsten film is deposited in its porous silicon region field surface, thickness is
Silicon chip substrate, is then put into tube furnace by 200nm, seals and is passed through nitrogen under normal pressure, utilizes 450 DEG C of growth tungsten oxides of CVD method
Nano wire;
4. the Au electrodes of two round point shapes, the diameter of the Au electrodes are made on Porous Silicon area using magnetron sputtering method
For 1mm, thickness 70nm.
The data read module is sent to the controller being arranged inside the detection device by wireless communication module
Module, the controller module communicated by wireless communication module and GPRS module, and will be detected by the detection device
Data value is transmitted to detection data basestation;
Further, the self energizing sensing element is additionally provided with a gas identification module, the gas identification module
Connected by conducting wire with the data read module, the gas identification module mainly connects by shell body and with shell body detachable
The gas detection means connect are formed, and the gas detection means are made of diffusion control film layer, instruction support powder and glass tube;
The preparation process of the gas detection means is as follows:
S1:The processing and activation of carrier:The silica-gel carrier sieved (90~100 mesh) is placed in 600 DEG C of Muffle furnaces
2h is calcined, after cooling, bottling is stand-by;
S2:Indicate the preparation of carrier:Measure a certain amount of original liquid to be put into a container, pour into a certain amount of activation and carry
Body, it is stirring while adding, until being uniformly mixed, untill supernatant liquor is less.After spontaneously drying in atmosphere, it is fitted into closed container
It is stand-by;
S3:The preparation of glass tube:Select internal diameter is uniform, glass tube that transparency is good (specification for ID2.0mm ×
OD4.0mm), some sections of the glass tube that length is 30mm is intercepted into, with sand paper by both sides feather plucking, then successively with suds, clear
Water, distilled water are clean by glass tube cleaning, dry stand-by;
S4:The preparation of diffusion control film:Film is controlled as diffusion using the polyester film of 0.5mm thickness, after polymer PET drying,
The circular membrane for being 2.0mm into outside diameter with mould punching;
S5:The assembling of gas identification module:By the diffusion control film side of adhesive bonding to glass tube, then weigh
Certain amount instruction support powder slowly loads in glass tube to glass tube tight, and another side diffusion control film is bonded after smooth.
Test data:
In obtained device, the length to carbon nanotubes on electrode of dye-sensitized solar cells is about 8 μm, and gas passes
The aperture of porous silicon about 20~40nm in sensor;During test, which is put into 1m3Light tight hermetical testing container, take
100mW/cm2Xenon source simulated solar irradiation, the NO of various concentrations is passed through into test container respectively2Gas.
The sensitivity of gas is represented with following formula:R%=(I0±It/I0) × 100%, in formula, in the feelings that light source power is constant
Under condition, I0Not to be passed through NO2When device in size of current, ItTo be passed through NO2Size of current when testing gas in device.
Test obtains, the optimal transformation efficiency about 8.7% of dye-sensitized solar cells, and test is sent out after repeating 2000 times
Existing, dye-sensitized solar cells transformation efficiency drops to 7.4%, reproducible;When about 40 DEG C of gas sensor operating temperature
When, its selectivity and sensitivity to gas is put up the best performance, wherein, to NO2The detection limit of gas is 26ppm, right
The NO of 100ppm2, sensitivity 39, response time 15s;To NH3The detection limit of gas is 12ppm, to the NH of 100ppm3, spirit
Sensitivity is up to 37, response time 9s.
Embodiment 5
A kind of solar cell frame with quick detection gas that the embodiment of the present invention is provided, the sun
The outer surface installation detecting device of energy battery frame, the detection device is based on self energizing sensing element, and further includes number
According to read module and gas identification module;The self energizing sensing element includes dye sensitization solar cell module and gas sensing
Device module;The dye sensitization solar cell module includes to electrode, light anode and is filled in described to electrode and light sun
Electrolyte between pole, it is described electrode is included stainless steel base, close to stainless steel base conductive catalytic layer, be arranged at it is described
Carbon nanotubes on conductive catalytic layer, the light anode include ITO electro-conductive glass substrate and in ITO electro-conductive glass substrates
TiO2Particle and dye molecules, the TiO2The particle diameter of particle about 100nm;The gas sensor module include silicon chip substrate,
Tungsten oxide nano and Au electrodes, on the surface of the silicon chip substrate corrosion have Porous Silicon area, the table of the Porous Silicon area
Face evaporation has composite sensitive material of the tungsten oxide layer film with porous silicon together as detection gas;The dye sensitization of solar
Battery module and gas sensor module be arranged at surface have an a diameter of 0.5cm air admission hole specification for 5cm × 5cm ×
In the cuboid framework of the aluminum of 1cm, the dye sensitization solar cell module passes through adhesive bonding to the frame
Outer surface, and make light anode upward, the gas sensor module, data read module are arranged at the lower portion, described
Dye sensitization solar cell module, the gas sensor module are connected with data read module by conducting wire.
Preferably, the making of the dye sensitization solar cell module includes the following steps:
S1:It is prepared by electrode:1. selecting the stainless steel base that the specification that thickness is 0.3mm is 5cm × 5cm, thrown with sand paper
Light, is cleaned by ultrasonic successively by acetone, ethanol, deionized water;2. metal Cr is plated in stainless steel base using magnetron sputtering method
Film and Ni films form conductive catalytic layer, and the thickness of the Cr films is 300nm, and the thickness of the Ni films is 15nm;3. utilize CVD
Method, CH4For carbon source, Ni is catalyst, grows carbon nanotubes;
S2:The preparation of light anode:1. taking absolute ethyl alcohol 50ml, ethylene glycol amine 2ml respectively, make it in 50 DEG C of stirred in water bath
It is sufficiently mixed, butyl titanate 9ml is added in mixed solution, 1h is stirred in continuation in a water bath, then adds absolute ethyl alcohol 10ml,
1h is stirred in a water bath, is stood 12h, is obtained TiO2Solution, is filtered, dry;2. take the TiO of 5g steps 1. middle drying2Grain
Son, the mixing of 10ml ethanol, 2ml acetylacetone,2,4-pentanediones, are put into mortar and grind abundant, obtained TiO2Slurry;It is 3. suitable in taking step 2.
The TiO of amount2The specification of slurry blade coating after cleaning is in the ITO electro-conductive glass substrates of 5cm × 5cm, by being handled at 110 DEG C
2h, is then immersed in 6h in the ethanol solution of N719, up to light anode;
S3:Electrolyte quota:0.5M lithium iodides, 0.06M iodine, the tertiary yl pyridines of 0.1M 4- and 0.3M 1- propyl group -3- methyl
Iodonium imidazolide salts, solvent are volume ratio 1:1 acetonitrile and propylene carbonate mixed liquor;
S4:Assembling:Electrode will be covered in light anode, and form 50 μm of cavity between the two, edge utilizes insulator
Encapsulation, injects the electrolyte into cavity, forms dye sensitization solar cell module;
The preparation of the gas sensor module comprises the following steps:
1. cutting silicon chip substrate size to 2cm × 2cm, it is put into cleaning solution and is cleaned by ultrasonic 40min, cleaning solution is volume ratio
For 3:1 98% concentrated sulfuric acid and 40% hydrogen peroxide;Take out silicon chip substrate to be rinsed well with deionized water, place into hydrofluoric acid and soak
10min is steeped, then is cleaned by ultrasonic 20min respectively with acetone, ethanol, deionized water successively;
2. using electrochemical process corrosion of silicon, corrosive liquid is prepared, corrosive liquid is volume ratio 1:3 hydrofluoric acid (40%) and go
The mixed liquor of ionized water, corrosion current 25mA/cm2, etching time 1h, formed on silicon chip substrate surface size 1.5cm ×
The Porous Silicon area of 1cm;
3. silicon chip substrate is put into magnetic control sputtering device, one layer of tungsten film is deposited in its porous silicon region field surface, thickness is
Silicon chip substrate, is then put into tube furnace by 200nm, seals and is passed through nitrogen under normal pressure, utilizes 450 DEG C of growth tungsten oxides of CVD method
Nano wire;
4. the Au electrodes of two round point shapes, the diameter of the Au electrodes are made on Porous Silicon area using magnetron sputtering method
For 1mm, thickness 100nm.
The data read module is sent to the controller being arranged inside the detection device by wireless communication module
Module, the controller module communicated by wireless communication module and GPRS module, and will be detected by the detection device
Data value is transmitted to detection data basestation;
Further, the self energizing sensing element is additionally provided with a gas identification module, the gas identification module
Connected by conducting wire with the data read module, the gas identification module mainly connects by shell body and with shell body detachable
The gas detection means connect are formed, and the gas detection means are made of diffusion control film layer, instruction support powder and glass tube;
The preparation process of the gas detection means is as follows:
S1:The processing and activation of carrier:The silica-gel carrier sieved (90~100 mesh) is placed in 600 DEG C of Muffle furnaces
2h is calcined, after cooling, bottling is stand-by;
S2:Indicate the preparation of carrier:Measure a certain amount of original liquid to be put into a container, pour into a certain amount of activation and carry
Body, it is stirring while adding, until being uniformly mixed, untill supernatant liquor is less.After spontaneously drying in atmosphere, it is fitted into closed container
It is stand-by;
S3:The preparation of glass tube:Select internal diameter is uniform, glass tube that transparency is good (specification for ID2.0mm ×
OD4.0mm), some sections of the glass tube that length is 30mm is intercepted into, with sand paper by both sides feather plucking, then successively with suds, clear
Water, distilled water are clean by glass tube cleaning, dry stand-by;
S4:The preparation of diffusion control film:Film is controlled as diffusion using the polyester film of 0.5mm thickness, after polymer PET drying,
The circular membrane for being 2.0mm into outside diameter with mould punching;
S5:The assembling of gas identification module:By the diffusion control film side of adhesive bonding to glass tube, then weigh
Certain amount instruction support powder slowly loads in glass tube to glass tube tight, and another side diffusion control film is bonded after smooth.
Test data:
In obtained device, the length to carbon nanotubes on electrode of dye-sensitized solar cells is about 9 μm, and gas passes
The aperture of porous silicon about 30~70nm in sensor;During test, which is put into 1m3Light tight hermetical testing container, take
100mW/cm2Xenon source simulated solar irradiation, the NO of various concentrations is passed through into test container respectively2Gas.
The sensitivity of gas is represented with following formula:R%=(I0±It/I0) × 100%, in formula, in the feelings that light source power is constant
Under condition, I0Not to be passed through NO2When device in size of current, ItTo be passed through NO2Size of current when testing gas in device.
Test obtains, the optimal transformation efficiency about 11.7% of dye-sensitized solar cells, and test is sent out after repeating 2000 times
Existing, dye-sensitized solar cells transformation efficiency drops to 9.7%, reproducible;When about 40 DEG C of gas sensor operating temperature
When, its selectivity and sensitivity to gas is put up the best performance, wherein, to NO2The detection limit of gas is 14ppm, right
The NO of 100ppm2, sensitivity 67, response time 15s;To NH3The detection limit of gas is 25ppm, to the NH of 100ppm3, spirit
Sensitivity is up to 36, response time 23s.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of scope is protected, although being explained with reference to preferred embodiment to the present invention, those of ordinary skill in the art should
Work as understanding, can be to technical scheme technical scheme is modified or replaced equivalently, without departing from the reality of technical solution of the present invention
Matter and scope.