CN106566550A - Preparation method and application of composite up-conversion luminescent material - Google Patents
Preparation method and application of composite up-conversion luminescent material Download PDFInfo
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- CN106566550A CN106566550A CN201611002737.2A CN201611002737A CN106566550A CN 106566550 A CN106566550 A CN 106566550A CN 201611002737 A CN201611002737 A CN 201611002737A CN 106566550 A CN106566550 A CN 106566550A
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
- C09K11/7767—Chalcogenides
- C09K11/7769—Oxides
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/20—Light-sensitive devices
- H01G9/2027—Light-sensitive devices comprising an oxide semiconductor electrode
- H01G9/2031—Light-sensitive devices comprising an oxide semiconductor electrode comprising titanium oxide, e.g. TiO2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/542—Dye sensitized solar cells
Abstract
The invention provides a preparation method and application of a composite up-conversion luminescent material and belongs to the field of solar cells. According to the preparation method of the composite up-conversion luminescent material, a Ce(OH)CO3 precursor is prepared through a water bath method, an up-conversion luminescent material, CeO2:Er<3+>/Yb<3+>Fe<3+>, which is of a rod-shaped structure is prepared through a hydrothermal method, a P25 sizing agent and the composite CeO2:Er<3+>/Yb<3+>Fe<3+> of the rod-shaped structure is coated to a FTO glass through silk-screen printing, high-temperature calcination is conducted, and then a photo-anode material is obtained. The prepared photo-anode material of a dye-sensitized solar cell has good photoelectric property, and the photoelectric conversion efficiency is improved by over 32% compared with that of pure titanium dioxide; and the preparation technology is simple, operation is easy and convenient, and the prepared photo-anode material of the dye-sensitized solar cell is suitable for the fields of the solar cells.
Description
Technical field
The invention belongs to technical field of solar batteries, and in particular to the system of dye-sensitized solar cell anode material
Preparation Method.
Background technology
The mankind are faced with the problems such as increasingly serious energy crisis and environmental pollution, develop new green energy resource
Just becoming present and the development of future world energy science and technology theme.Solar energy is a kind of new energy of eco-friendly renewable cleaning
Source, can not only slow down the consumption of non-renewable energy, and environmentally friendly, and the continuable strategic objective for complying fully with country will
Ask.Solar product is just progressively coming into our life, as a kind of new cleaning fuel and low price photovoltaic approach, too
Positive energy battery is a kind of device for converting the solar into electric energy, is one of mode effectively using solar energy.
Solaode can be divided three classes according to solaode development course：First generation solaode is silicon substrate
Semi-conductor cell, second filial generation compound semiconductor solaode, third generation solar cell are the introduction of Organic substance and nanometer
The novel thin film of technology too can battery, including dye-sensitized solar cells.
Medium of the light anode as the carrier and collection electronics and transmission electronics of photosensitizer, in dye sensitization of solar electricity
Play an important role in pond.Used as the dye photoactivation agent of battery core ingredient, the long wavelength threshold of absorption spectrum is general not
More than 750 nm, and in solar spectrum, there are 55 %～60 % to be distributed in the near infrared region outside 750 nm so that dye sensitization is too
Positive battery light anode cannot overall absorption to full wave solar energy.So thinking fundamentally to improve dye sensitization of solar
The efficiency of battery must just expand the spectral response range of battery, be converted near infrared light using up-conversion luminescent material visible
Light.
At present, also not upper conversion doping Fe in existing report3+Light anode material be used for the dye sensitization sun
The report of energy battery.Therefore, study rod-like structure composite CeO2:Er3+/Yb3+/Fe3+Light anode material to dye sensitization too
Positive energy battery has important application value.
The content of the invention
The invention aims to a kind of process is simple is provided, and it is easy to operate, solar cell photoelectric can be effectively improved and turned
Change a kind of rod-like structure CeO of efficiency2:Er3+/Yb3+/Fe3+The preparation method of dye-sensitized solar cell anode material.
The present invention is comprised the following steps：
1）Cerous nitrate aqueous solution, Ytterbium(III) nitrate. aqueous solution, Erbium trinitrate aqueous solution and iron nitrate aqueous solution are mixed, Jing ultrasonic agitation,
Obtain mixed aqueous solution, then mixed aqueous solution carried out into water-bath to after terminating, be cooled to room temperature, take solid formation Jing 6000～
After 9000r/min centrifugations, pure water washing, dry at 80 DEG C, obtain Ce (OH) CO3:Er3+/Yb3+/Fe3+Presoma；
2）By the Ce (OH) CO3:Er3+/Yb3+/Fe3+Presoma and sodium hydrate aqueous solution mixing, Jing quiet Jing after ultrasonic agitation
Put 24 hours, obtain mixed solution；
3）Mixed solution is placed in autoclave carries out hydro-thermal reaction；
4）After hydro-thermal reaction terminates, reaction system is cooled to into room temperature, Jing 6000～9000r/min centrifugations obtain solid phase,
Again 6000～9000r/min of solid phase Jing centrifugations, pure water washing are dried at 80 DEG C, composite is obtained；
5）By composite high-temperature calcination, rod-like structure CeO is obtained2:Er3+/Yb3+/Fe3+Up-conversion luminescent material.
The advantage of present invention process is：
1st, abundant raw materials, low cost, preparation process is simple.Using each layer of screen-printing deposition, surface defect, and energy are reduced
Enough obtain less size and there is large specific surface area, adsorbed in photoanode surface so as to effectively improve dye molecule.
2nd, the present invention can be had using the photo-anode film that rear-earth-doped upper conversion luminescent material and titanium dioxide are combined preparation
Effect increases the absorption to infrared energy, expands absorption spectrum ranges so that in photo-anode film, photoelectron scattering strengthens, electricity
The electricity conversion in pond is remarkably reinforced, and compares with existing P25 light anodes battery efficiency and increased 32.4 %.It is prepared into
CeO2:Er3+/Yb3+/Fe3+Composite structure is novel, and in shaft-like, size is at 1 μm or so.
Further, step 1 of the present invention）The temperature conditionss of middle water-bath are 80 DEG C.At this temperature cause
Water-bath control being optimal of gentle agitation, reaction fully can be carried out, so that CeO2:Er3+/Yb3+/Fe3+Presoma
Pattern reach it is best.
The step 1）Nitre in middle cerous nitrate aqueous solution, Ytterbium(III) nitrate. aqueous solution, Erbium trinitrate aqueous solution and iron nitrate aqueous solution
The mixing mol ratio of sour cerium, Ytterbium(III) nitrate., Erbium trinitrate and ferric nitrate is 95.2: 0.3: 3: 1.5.With this consumption, the doping of ferrum rubs
You measure, and can make rod-like structure CeO2:Er3+/Yb3+/Fe3+Fluorescence intensity of the composite under 980nm laser instrument reaches most by force,
Upper transformation efficiency highest.
The step 1）Described in cerous nitrate aqueous solution, Ytterbium(III) nitrate. aqueous solution, Erbium trinitrate aqueous solution and iron nitrate aqueous solution
Concentration be respectively 0.1～1M.Cerous nitrate aqueous solution, Ytterbium(III) nitrate. aqueous solution, Erbium trinitrate aqueous solution and nitre in this concentration ranges
Being optimal of pattern and fluorescence intensity of the made product of sour water solution reaches most strong.
The step 2）Described in Ce (OH) CO3:Er3+/Yb3+/Fe3+Hydroxide in presoma and sodium hydrate aqueous solution
The mixing mol ratio of sodium is 6.25：93.75.As Ce (OH) CO3:Er3+/Yb3+/Fe3+Hydrogen in presoma and sodium hydrate aqueous solution
When the mixing mol ratio of sodium oxide reaches 6.25: 93.75, stand in atmosphere, aging reaction is fully carried out.
The step 3）Described in naoh concentration be 0.6～3M.When the concentration here interval of sodium hydrate aqueous solution
When so that Ce (OH) CO3:Er3+/Yb3+/Fe3+The rod-like structure of presoma can be preferably preserved in aging reaction.
The step 3）Described in hydro-thermal reaction ambient temperature be 140 DEG C.At this temperature so that rod-like structure Ce
(OH)CO3:Er3+/Yb3+/Fe3+Presoma can be under the reaction condition of hydro-thermal so that its crystal formation fully can be grown up.
The step 5）Described in the temperature calcined be 500～1100 DEG C, calcination time is 1～3 h；During calcining with 2 DEG C/
Temperature is warming up to 500～1100 DEG C by the heating rate of min.It it is 1100 DEG C in calcining heat, calcination time is 3h, heating rate
Under conditions of for 2 DEG C/min, rod-like structure composite CeO is caused under sufficient calcination time and slow heating rate2:
Er3+/Yb3+/Fe3+Upper conversion performance be achieved, under 980nm laser instrument, fluorescence intensity reaches most strong.
It is another object of the present invention to propose rod-like structure composite CeO made by said method2:Er3+/Yb3+/Fe3+
Application of the up-conversion luminescent material in dye-sensitized solar cell anode.
P25 titania slurries and rod-like structure composite CeO are coated successively in FTO glass surfaces2:Er3+/Yb3+/
Fe3+Up-conversion luminescent material, Jing calcinings, obtains dye-sensitized solar cell anode material.
P25 is distributed in ethyl cellulose, solvent is made with terpineol, form a kind of slurry steady in a long-term, by silk
Wire mark brush is uniformly applied to the homemade slurry on FTO electro-conductive glass, forms many sky TiO by high-temperature roasting2Thin film, slurry
The material coating number of plies is 6 layers, and now DSSC efficiency reaches highest, then in one layer of rod-like structure composite CeO of applied atop2:Er3 +/Yb3+/Fe3+Up-conversion luminescent material, reaches 6.889% based on the photoelectric efficiency of the DSSC on slurry after being optimized.
The dye-sensitized solar cell anode material of formation is assembled into into DSSC（DSSC）, Jing
Contrast, using the short-circuit current density in the battery of dye-sensitized solar cell anode made by the inventive method（Jsc）
Up to 20.589 mA/cm2, factor of influence（FF）Reach 43.4 %, photoelectric transformation efficiency（η）Up to 6.889 %.
As a result rod-like structure composite CeO made by showing2:Er3+/Yb3+/Fe3+Up-conversion luminescent material can effectively absorb infrared light
And the absorbable light of light anode is converted to, effectively increase photoelectric transformation efficiency.
In addition, the P25 titania slurries coat 6～8 layers, 1～2 layer of upper conversion luminescent material is then coated with；Forge
30 min are calcined after temperature is warming up to 450 DEG C with the heating rate of 10 DEG C/min during burning.P25 titania slurries adopt silk screen
Printing coating, can enable P25 slurries and upper conversion luminescent material to be uniformly coated on very much FTO glass using silk screen printing
On, the coating number of plies is 6 layers, applies one layer, burns one layer, after room temperature is down to, is coated with the second layer, is coated to 6 layers successively, be coated with
One layer of upper conversion luminescent material；The P25 titania slurries of all coatings and upper conversion luminescent material are during calcining, unified for 10
DEG C/heating rate of min calcines 30 min after temperature is warming up to 450 DEG C, and P25 could be caused under such calcination condition to starch
Material and it is upper conversion luminescent material sintering complete, upper transformation efficiency reach it is best so that the efficiency of DSSC reaches highest.
Description of the drawings
Fig. 1 rod-like structures CeO made by the present invention2:Er3+/Yb3+/Fe3+The Flied emission transmission of up-conversion luminescent material
Electronic Speculum TEM is schemed.
Fig. 2 rod-like structures CeO made by the present invention2:Er3+/Yb3+/Fe3+The Flied emission scanning of up-conversion luminescent material
Electron microscope SEM.
Fig. 3 is respectively rod-like structure CeO made by the present invention2:Er3+/Yb3+/Fe3+Up-conversion luminescent material, rod-like structure
Composite CeO2:Er3+/Yb3+And CeO2X-ray diffraction XRD figure.
Fig. 4 is respectively rod-like structure CeO made by the present invention2:Er3+/Yb3+/Fe3+Up-conversion luminescent material and CeO2:Er3 +/Yb3+Fluorescence radiation collection of illustrative plates under 980 nm laser instrument.
Fig. 5 is the I-V characteristic curve chart of DSSC of the present invention.
Specific embodiment
First, preparation method
1. Ce (OH) CO is prepared3:Er3+/Yb3+/Fe3+Presoma：
The cerous nitrate aqueous solution of 0.1～1M of configuration, Ytterbium(III) nitrate. aqueous solution, Erbium trinitrate aqueous solution.
（1）By the cerous nitrate aqueous solution for having configured, Ytterbium(III) nitrate. aqueous solution, Erbium trinitrate aqueous solution and iron nitrate aqueous solution it is mixed
Close, so that cerous nitrate, Ytterbium(III) nitrate., nitre in cerous nitrate aqueous solution, Ytterbium(III) nitrate. aqueous solution, Erbium trinitrate aqueous solution and iron nitrate aqueous solution
The ferrum mixing mol ratio of sour erbium and nitric acid is to reach 95.2:0.3:3:1.5,15～30 min are stirred, and it is sonicated, formed
Mixed solution.
（2）Mixed solution is gone in 80 DEG C of water-baths carries out water-bath 24 hours, after reaction terminates, is cooled to room
Temperature, processes 5～10 min with the centrifugal speed of 6000～9000 r/min, isolates solid formation, then by its solid formation centrifugation, pure
After water purification washing, dry at 80 DEG C, obtain presoma（Ce(OH)CO3:Er3+/Yb3+/Fe3+）.
2. rod-like structure composite CeO is prepared2: Er3+/Yb3+/Fe3+：
The sodium hydrate aqueous solution of 0.6～3 M of configuration.
（1）It is 0.2mmol presoma Ce (OH) CO by the mixing molal quantity for preparing3:Er3+/Yb3+/Fe3+It is added to and matches somebody with somebody
In the aqueous solution of the sodium hydroxide put, the total mole number of the sodium hydroxide in sodium hydrate aqueous solution is 3mmol, magnetic agitation
Device stirs 30～60 min, and 30～60 min of ultrasound, mix homogeneously stand 24 hours, obtain mixed solution.
（2）Above-mentioned mixed solution is transferred in the autoclave of 40 mL remaining adds pure water to complement to reactor appearance
The 80% of amount, stirs 15 ~ 30min, 15 ~ 30min of ultrasound, forms mixed solution, then is placed under 140 DEG C of temperature environment
24 h of water-filling thermal response.
After reaction terminates, room temperature is cooled to, 5～10 min are processed with the centrifugal speed of 6000～9000 r/min, separated
Solid formation is obtained, then by 6000～9000 r/min of solid formation Jing centrifugations, pure water washing, is dried at a temperature of 80 DEG C, is obtained
Composite.
（3）Composite is placed in calcining furnace, temperature is promoted to into 500～1100 DEG C with the heating rate of 2 DEG C/min
1～3 h of high-temperature calcination, obtains rod-like structure CeO2:Er3+/Yb3+/Fe3+Up-conversion luminescent material.
2nd, Characterization of The Products
Fig. 1 illustrates rod-like structure CeO of present invention preparation2:Er3+/Yb3+/Fe3+The Flied emission transmission of up-conversion luminescent material
Electronic Speculum TEM is schemed, and as can be seen from the figure this material is rod-like structure, and diameter is in 200 nm～500nm or so.
Fig. 2 illustrates rod-like structure CeO of present invention preparation2:Er3+/Yb3+/Fe3+The Flied emission of up-conversion luminescent material
Scanning electron microscope (SEM) photograph SEM, as can be seen from the figure this material be rod-like structure, amplification：× 30000, pattern is substantially uniform.
Fig. 3 respectively show rod-like structure CeO of present invention preparation2:Er3+/Yb3+/Fe3+It is up-conversion luminescent material, shaft-like
Structural composite material CeO2:Er3+/Yb3+And CeO2X-ray diffraction XRD figure comparing result.By contrasting XRD standard cards
PDF#33-0831, this product X RD collection of illustrative plates are consistent with standard spectrum, illustrate that this material is ceria.And it is hot through 1100 DEG C at
Reason, adulterated Yb3+, Er3+, Fe3+Rod-like structure CeO afterwards2:Er3+/Yb3+/Fe3+Up-conversion luminescent material exists（111）、
（200）、（220）、（311）、（222）、（400）、（331）、（421）Crystallographic plane diffraction peak is basic with the standard diffraction peak of ceria
It coincide, this also illustrates Yb3+, Er3+, Fe3+It is doped in ceria.
Fig. 4 respectively show rod-like structure CeO of present invention preparation2:Er3+/Yb3+/Fe3+It is up-conversion luminescent material, shaft-like
Structural composite material CeO2:Er3+/Yb3+The luminous spectrogram of fluorescence contrast under 980 nm laser instrument.The green peak position of most strong spectrum
In 525 nm, 552 nm and 562 nm, this is because energy conversion from2H11/2With4S3/2Arrive4I15/2.Red peak is 660
Nm and 680 nm.Its Er3+Energy conversion from4F9/2Arrive4I15/2 .These emission spectras, especially at 552 nm, with dye sensitization
The light of the most effective wave band utilized by solaode matches, therefore on adding in dye-sensitized solar cell anode
Transition material Yb3+, Er3+The utilization rate of light can be strengthened, while Fe3+Doping more enhance the utilization rate of light intensity, improve photoelectricity
Conversion efficiency.
3rd, prepare dye-sensitized solar cell anode：
1st, base material prepares：
FTO glass is cut into into long 5 cm, the size of wide 10 cm is placed in large beaker, respectively with acetone, ethanol, deionized water
Sequentially it is cleaned by ultrasonic 20 min, taking-up after having cleaned, oven for drying are standby.
2、TiO2It is prepared by slurry：
Take 0.5 g P25（Grain diameter is about the titanium dioxide of 25 nm), 1 ml（5% ethyl cellulose terpineol）, 10 ml
Dehydrated alcohol is added in round bottom beaker, is stirred 24 hours, ultrasound 24 hours, then rotary evaporation, will be ethanol therein complete
Evaporate.Obtain uniform and stable slurry.
3rd, prepare dye-sensitized solar cell anode：
Comparative example：
Using silk screen printing by TiO2Slurry is coated on FTO glass, drying at room temperature, is put in tube furnace and is calcined, with 10 DEG C/
The heating rate of min is raised to 450 DEG C, calcines 30 min.Temperature fall, applies one layer and burns one layer, apply 6～8 layers, places into N719 dyes
Material 12～24 h of immersion, are rinsed well with dehydrated alcohol, obtain dye-sensitized solar cell anode A.
Embodiment 1：
Using silk screen printing by TiO2Slurry is coated on FTO glass, drying at room temperature, is put in tube furnace and is calcined, with 10 DEG C/
The heating rate of min is raised to 450 DEG C, calcines 30 min, and Temperature fall applies one layer and burns one layer, is painted with 6～8 layers.
It is last to adopt screen printing technique again in TiO2One layer of rod-shaped material CeO is coated on pulp layer2:Er3+/Yb3+, with 10
DEG C/heating rate of min is raised to 450 DEG C, calcines 30 min.Temperature fall, is put into N719 dyestuffs and soaks 12～24 h, with anhydrous
Alcohol flushing is clean, obtains dye-sensitized solar cell anode B.
Embodiment 2：
Using silk screen printing by TiO2Slurry is coated on FTO glass, drying at room temperature, is put in tube furnace and is calcined, with 10 DEG C/
The heating rate of min is raised to 450 DEG C, calcines 30 min, and Temperature fall applies one layer and burns one layer, is painted with 6～8 layers.
It is last to adopt screen printing technique again in TiO2One layer of rod-shaped material CeO is coated on pulp layer2:Er3+/Yb3+/Fe3+,
450 DEG C are raised to the heating rate of 10 DEG C/min, 30 min are calcined, one layer are applied and is burnt one layer.Temperature fall, is put into the leaching of N719 dyestuffs
12～24 h of bubble, are rinsed well with dehydrated alcohol, obtain dye-sensitized solar cell anode C.
4th, the performance test of light anode：
Each dye-sensitized solar cell anode sample obtained in the embodiment of the present invention 1,2 and comparative example is assembled respectively to be formed
Battery.Step is as follows：Assembled battery first, adopts platinum electrode to electrode, the conduction of working electrode to be faced up, and to electrode
Conducting surface directed downwardly clip picks up to press from both sides into sandwich structure, then inject electrolyte between electrodes, carry out dye sensitization
The I-V curve test of solaode.
Table 1 below is the photoelectric properties contrast table of the DSSC packaged by the light anode by prepared by case study on implementation：
| Jsc (mA/ cm2) | Voc (V) | FF | η% | |
| Comparative example | 16.472 | 0.709 | 0.419 | 5.201 |
| Embodiment 1 | 17.485 | 0.717 | 0.442 | 5.910 |
| Embodiment 2 | 20.589 | 0.761 | 0.434 | 6.889 |
Knowable to the data in table 1 and Fig. 5, using dye-sensitized solar cell anode obtained in the present invention as work electricity
Pole, is assembled into DSSC, compared with comparative example, the short-circuit current density of embodiment 1～2（Jsc）And photoelectric transformation efficiency（η）Have
Strengthened.Short-circuit current density（Jsc）Up to 20.589 mA/cm2, factor of influence（FF）Reach 43.4 %, opto-electronic conversion
Efficiency（η）Up to 6.889 %.These are test result indicate that CeO2:Er3+/Yb3+/Fe3+Rod-shaped material can effectively absorb red
Outer light is simultaneously converted to the absorbable light of light anode, effectively increases photoelectric transformation efficiency.
Claims (10)
1. rod-like structure composite CeO2:Er3+/Yb3+/Fe3+The preparation method of up-conversion luminescent material, it is characterised in that include
Following steps：
1）Cerous nitrate aqueous solution, Ytterbium(III) nitrate. aqueous solution, Erbium trinitrate aqueous solution and iron nitrate aqueous solution are mixed, Jing ultrasonic agitation,
Obtain mixed aqueous solution, then mixed aqueous solution carried out into water-bath to after terminating, be cooled to room temperature, take solid formation Jing 6000～
After 9000r/min centrifugations, pure water washing, dry at 80 DEG C, obtain Ce (OH) CO3:Er3+/Yb3+/Fe3+Presoma；
2）By the Ce (OH) CO3:Er3+/Yb3+/Fe3+Presoma and sodium hydrate aqueous solution mixing, Jing quiet Jing after ultrasonic agitation
Put 24 hours, obtain mixed solution；
3）Mixed solution is placed in autoclave carries out hydro-thermal reaction；
4）After hydro-thermal reaction terminates, reaction system is cooled to into room temperature, Jing 6000～9000r/min centrifugations obtain solid phase,
Again 6000～9000r/min of solid phase Jing centrifugations, pure water washing are dried at 80 DEG C, composite is obtained；
5）By composite high-temperature calcination, rod-like structure CeO is obtained2:Er3+/Yb3+/Fe3+Up-conversion luminescent material.
2. preparation method according to claim 1, it is characterised in that the step 1）The temperature conditionss of middle water-bath are
80℃。
3. preparation method according to claim 1 and 2, it is characterised in that the step 1）Middle cerous nitrate aqueous solution, nitric acid
The mixing mol ratio of cerous nitrate, Ytterbium(III) nitrate., Erbium trinitrate and ferric nitrate in ytterbium aqueous solution, Erbium trinitrate aqueous solution and iron nitrate aqueous solution
For 95.2: 0.3: 3: 1.5.
4. preparation method according to claim 3, it is characterised in that the step 1）Described in cerous nitrate aqueous solution, nitric acid
The concentration of ytterbium aqueous solution, Erbium trinitrate aqueous solution and iron nitrate aqueous solution is respectively 0.1～1M.
5. preparation method according to claim 1, it is characterised in that the step 2）Described in Ce (OH) CO3:Er3+/Yb3 +/Fe3+In the mixing molal quantity of presoma and sodium hydrate aqueous solution, the ratio of the molal quantity of sodium hydroxide is 6.25: 93.75.
6. preparation method according to claim 5, it is characterised in that the step 3）Described in naoh concentration be 0.6
～3M.
7. preparation method according to claim 1, it is characterised in that the step 3）Described in hydro-thermal reaction environment temperature
Spend for 140 DEG C.
8. preparation method according to claim 1, it is characterised in that the step 5）Described in the temperature calcined be 500～
1100 DEG C, calcination time is 1～3 h；Temperature is warming up to into 500～1100 DEG C with the heating rate of 2 DEG C/min during calcining.
9. rod-like structure composite CeO made by method as claimed in claim 12:Er3+/Yb3+/Fe3+Up-conversion luminescent material
Application in DSSC light anodes, it is characterised in that：P25 titania slurries and shaft-like knot are coated successively in FTO glass surfaces
Structure composite CeO2:Er3+/Yb3+/Fe3+Up-conversion luminescent material, Jing calcinings, obtains dye-sensitized solar cell anode
Material.
10. application according to claim 9, it is characterised in that：The P25 titania slurries coat 6～8 layers, then
It is coated with 1～2 layer of upper conversion luminescent material；Temperature is warming up to after 450 DEG C with the heating rate of 10 DEG C/min during calcining and is calcined
30 min。
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107195462A (en) * | 2017-06-02 | 2017-09-22 | 扬州大学 | A kind of preparation method and applications of photosensitizer nano composite material |
| CN107254311A (en) * | 2017-06-30 | 2017-10-17 | 扬州大学 | A kind of preparation method and applications of nanocube up-conversion luminescent material |
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