CN105244172B - A kind of preparation method and applications of dye-sensitized solar cell anode - Google Patents
A kind of preparation method and applications of dye-sensitized solar cell anode Download PDFInfo
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- CN105244172B CN105244172B CN201510717101.5A CN201510717101A CN105244172B CN 105244172 B CN105244172 B CN 105244172B CN 201510717101 A CN201510717101 A CN 201510717101A CN 105244172 B CN105244172 B CN 105244172B
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- Y02E10/542—Dye sensitized solar cells
Abstract
A kind of preparation method and applications of dye-sensitized solar cell anode.The present invention relates to a kind of preparation method and applications of dye-sensitized solar cell anode.The present invention be in order to solve prior art preparation the DSSC compound battery efficiency caused few to near-infrared region energy utilization and interface photo-generated carrier it is low the problem of.Method:First, Ho (NO are prepared3)3With Yb (NO3)3;2nd, YbF is prepared3‑Ho;3rd, by YbF3Ho and TiO2Uniform mixing, high-temperature calcination obtains the upper conversion powder of heterojunction structure;4th, light anode is prepared.The present invention is to regard dye-sensitized solar cell anode as upper conversion light anode DSSC of the anode for preparing heterojunction structure.
Description
Technical field
The present invention relates to a kind of preparation method and applications of dye-sensitized solar cell anode.
Background technology
Conventional dyes sensitization solar battery is few to the energy utilization of near-infrared region so that the absorption spectrum of battery with too
Solar spectrum is mismatched, and limits the lifting of battery efficiency.
Rare earth up-conversion can utilize near infrared light, and convert thereof into visible ray, therefore material will be changed on rare earth
Expect, for the photoresponse scope of battery can be expanded to near infrared region in DSSC, to improve battery to the sun
The utilization rate of light, so as to improve the photoelectric transformation efficiency of battery.But, because the electric conductivity of upper conversion powder is poor, used
The complex centre of photo-generated carrier can be served as among DSSC, serious Interface composites reaction can hinder electricity
The transmission of son, reduces photoelectric current so that the photoelectric transformation efficiency of battery declines.
The content of the invention
The present invention be in order to solve prior art preparation DSSC to near-infrared region energy utilization
The problem of compound battery efficiency caused of few and interface photo-generated carrier is low, and there is provided a kind of DSSC
The preparation method and applications of light anode.
What a kind of preparation method of dye-sensitized solar cell anode was specifically carried out according to the following steps:
First, by Yb2O3And Ho2O3Mixing, obtains mixture, adds mixture to HNO3In, it is then 50 DEG C in temperature
15min~45min is dissolved by heating under conditions of~90 DEG C, 4h~10h is then dried under conditions of 90 DEG C~150 DEG C of temperature,
Obtain Yb (NO3)3With Ho (NO3)3;The Ho2O3With Yb2O3Mol ratio is 1:(40~100);The quality of the mixture with
HNO3Volume ratio be 1g:(1~7) mL;
2nd, by NH4HF2It is dissolved in deionized water, obtains NH4HF2Solution;Yb (the NO that step one is obtained3)3And Ho
(NO3)3It is dissolved in deionized water, obtains mixed liquor;Then mixed liquor is added dropwise to 50 drops/min~80 drops/min speed
NH4HF2In solution, use HF to adjust pH value for 1~7 after mixing completely, obtain synthetic product;Synthetic product is transferred to hydro-thermal
Hydro-thermal reaction is carried out in kettle, hydrothermal temperature is 150 DEG C~200 DEG C, and the hydro-thermal time is 12h~24h, and hydro-thermal obtains hydro-thermal after finishing
Product, room temperature is naturally cooled to by hydrothermal product, is then centrifuged, obtained with 3000rpm~15000rpm speed
White depositions, white depositions are first adopted and are washed with deionized 2~5 times, then using washes of absolute alcohol 2~5 times, are obtained
Sediment after cleaning, sediment after cleaning is placed in the vacuum drying chamber that temperature is 100 DEG C and dried after 1h~5h, then is placed in temperature
Calcining 0.5h~4h in the Muffle furnace for 300 DEG C~600 DEG C is spent, room temperature is naturally cooled to, obtains conversion YbF3- Ho nanometers
Grain;The NH4HF2Quality and deionized water volume ratio be 1g:(10~50) mL;
3rd, the upper conversion YbF for obtaining step 23- Ho nano particles and TiO2Mixing, be subsequently placed in temperature for 100 DEG C~
0.5h~5h is calcined in 600 DEG C of Muffle furnace, room temperature is naturally cooled to, obtains YbF3-Ho/TiO2Powder is changed on heterojunction structure;
The upper conversion YbF that the step 2 is obtained3- Ho nano particles and TiO2Mass ratio be 1:(3~20);
4th, the YbF for obtaining step 33-Ho/TiO2Powder, ethyl cellulose, terpinol and second are changed on heterojunction structure
Alcohol is uniformly mixed, and slurry is made, and silk-screen printing is carried out to slurry using 250 mesh silk screens, will with 1 DEG C/min heating rate
Temperature rises to 200 DEG C~700 DEG C from room temperature, and 0.5h~5h is then incubated at a temperature of 200 DEG C~700 DEG C, dyestuff is obtained quick
Change solar battery light anode;The YbF that the step 3 is obtained3-Ho/TiO2Powder and ethyl cellulose are changed on heterojunction structure
Mass ratio be 1:(0.1~0.5);The YbF that the step 3 is obtained3-Ho/TiO2Powder and terpinol are changed on heterojunction structure
Mass ratio be 1:(2~7);The YbF that the step 3 is obtained3-Ho/TiO2The quality of powder and ethanol is changed on heterojunction structure
Than for 1:(2~5).
A kind of application of dye-sensitized solar cell anode is to regard dye-sensitized solar cell anode as sun
Pole is used for the upper conversion light anode DSSC for preparing heterojunction structure;The upper conversion light anode of the heterojunction structure
The photoelectric transformation efficiency of DSSC is 8.2%~8.4%;The upper conversion light anode dyestuff of the heterojunction structure
The short circuit current flow of sensitization solar battery is 19.4mAcm2~20.2mAcm2。
Beneficial effects of the present invention:
The present invention is prepared for a kind of dye-sensitized solar cell anode, and preparation method is simple.Using present invention preparation
The upper conversion light anode DSSC of heterojunction structure for preparing of dye-sensitized solar cell anode
There is following advantage compared with traditional light anode dye-sensitized cell:
1st, photoelectric respone is generated near infrared light, improves utilization rate of the battery to sunshine.
2、YbF3The upper conversion nano particles of-Ho can pass through YbF3- Ho and TiO2Heterogeneous interface directly by excitation state electronics
Inject TiO2In conduction band, the short circuit current flow of battery is improved;
3rd, through YbF3-Ho/TiO2The visible ray being converted on heterojunction structure powder can be sensitized agent N719 and absorb,
Improve the short circuit current flow of battery;
4th, the YbF of this heterojunction structure3-Ho/TiO2TiO can be promoted2The separation of middle photo-generate electron-hole, extends electronics
In the life-span, be conducive to the raising of cell photoelectric performance.
5、YbF3-Ho/TiO2The above advantage of heterojunction structure powder causes this based on YbF3-Ho/TiO2On heterojunction structure
The DSSC of the light anode composition of conversion nano powder has less transmission resistance, is conducive to the fast of electronics
Speed transmission;The life-span increase of light induced electron in battery so that the photoelectric transformation efficiency of battery is relative to existing TiO2P25 light anodes
Battery improves 27%, and short circuit current flow improves 28%.
Brief description of the drawings
Fig. 1 is obtained YbF in the step 3 of embodiment one3-Ho/TiO2The scanning electron microscope (SEM) photograph of powder is changed on heterojunction structure;
Fig. 2 is obtained YbF in the step 3 of embodiment one3-Ho/TiO2The transmission electron microscope picture of powder is changed on heterojunction structure;
Fig. 3 is obtained YbF in the step 3 of embodiment one3-Ho/TiO2Changed on heterojunction structure powder respectively in ethanol and
Fluorescent spectrum curve comparison diagram in N719 ethanol solutions, wherein 1 is fluorescent spectrum curve in ethanol, 2 be in N719 second
Fluorescent spectrum curve in alcoholic solution;
Fig. 4 is the TiO being sensitized without sensitizer N7192P25 light anodes DSSC with without sensitizer
The short circuit current flow for the upper conversion light anode DSSC of heterojunction structure that the embodiment two of N719 sensitizations is obtained with
Open-circuit voltage correlation curve, wherein 1 is the upper conversion light of the heterojunction structure obtained without the sensitizer N719 embodiments two being sensitized
Anode DSSC, 2 be the TiO being sensitized without sensitizer N7192P25 light anode batteries;
Fig. 5 is TiO2The upper conversion light anode dye sensitization for the heterojunction structure that P25 light anodes battery is obtained with embodiment two
The transient state spectrum correlation curve of solar cell, wherein 1 is the upper conversion light anode dyestuff for the heterojunction structure that embodiment two is obtained
Sensitization solar battery, 2 be TiO2P25 light anode DSSCs;
Fig. 6 is TiO2The upper conversion for the heterojunction structure that P25 light anodes DSSC is obtained with embodiment two
Open-circuit voltage attenuation verses' curve of light anode DSSC, wherein 1 is the heterojunction structure that embodiment two is obtained
Upper conversion light anode DSSC, 2 be TiO2P25 light anode DSSCs;
Fig. 7 is TiO under illumination condition2The hetero-junctions that P25 light anodes DSSC is obtained with embodiment two
The upper conversion light anode DSSC of structure AC impedance contrast collection of illustrative plates, wherein 1 be embodiment two obtain it is different
The upper conversion light anode DSSC of matter structure, 2 be TiO2P25 light anode DSSCs;
Fig. 8 is TiO2The upper conversion for the heterojunction structure that P25 light anodes DSSC is obtained with embodiment two
Short circuit current flow of the light anode DSSC in the case where simulating under conditions of 1.5G sunshines contrasts bent with open-circuit voltage
Line, wherein 1 is the upper conversion light anode DSSC for the heterojunction structure that embodiment two is obtained, 2 be TiO2P25 light
Anode DSSC.
Embodiment
Embodiment one:A kind of preparation method of dye-sensitized solar cell anode of present embodiment is specific
Carry out according to the following steps:
First, by Yb2O3And Ho2O3Mixing, obtains mixture, adds mixture to HNO3In, it is then 50 DEG C in temperature
15min~45min is dissolved by heating under conditions of~90 DEG C, 4h~10h is then dried under conditions of 90 DEG C~150 DEG C of temperature,
Obtain Yb (NO3)3With Ho (NO3)3;The Ho2O3With Yb2O3Mol ratio is 1:(40~100);The quality of the mixture with
HNO3Volume ratio be 1g:(1~7) mL;
2nd, by NH4HF2It is dissolved in deionized water, obtains NH4HF2Solution;Yb (the NO that step one is obtained3)3And Ho
(NO3)3It is dissolved in deionized water, obtains mixed liquor;Then mixed liquor is added dropwise to 50 drops/min~80 drops/min speed
NH4HF2In solution, use HF to adjust pH value for 1~7 after mixing completely, obtain synthetic product;Synthetic product is transferred to hydro-thermal
Hydro-thermal reaction is carried out in kettle, hydrothermal temperature is 150 DEG C~200 DEG C, and the hydro-thermal time is 12h~24h, and hydro-thermal obtains hydro-thermal after finishing
Product, room temperature is naturally cooled to by hydrothermal product, is then centrifuged, obtained with 3000rpm~15000rpm speed
White depositions, white depositions are first adopted and are washed with deionized 2~5 times, then using washes of absolute alcohol 2~5 times, are obtained
Sediment after cleaning, sediment after cleaning is placed in the vacuum drying chamber that temperature is 100 DEG C and dried after 1h~5h, then is placed in temperature
Calcining 0.5h~4h in the Muffle furnace for 300 DEG C~600 DEG C is spent, room temperature is naturally cooled to, obtains conversion YbF3- Ho nanometers
Grain;The NH4HF2Quality and deionized water volume ratio be 1g:(10~50) mL;
3rd, the upper conversion YbF for obtaining step 23- Ho nano particles and TiO2Mixing, be subsequently placed in temperature for 100 DEG C~
0.5h~5h is calcined in 600 DEG C of Muffle furnace, room temperature is naturally cooled to, obtains YbF3-Ho/TiO2Powder is changed on heterojunction structure;
The upper conversion YbF that the step 2 is obtained3- Ho nano particles and TiO2Mass ratio be 1:(3~20);
4th, the YbF for obtaining step 33-Ho/TiO2Powder, ethyl cellulose, terpinol and second are changed on heterojunction structure
Alcohol is uniformly mixed, and slurry is made, and silk-screen printing is carried out to slurry using 250 mesh silk screens, will with 1 DEG C/min heating rate
Temperature rises to 200 DEG C~700 DEG C from room temperature, and 0.5h~5h is then incubated at a temperature of 200 DEG C~700 DEG C, dyestuff is obtained quick
Change solar battery light anode;The YbF that the step 3 is obtained3-Ho/TiO2Powder and ethyl cellulose are changed on heterojunction structure
Mass ratio be 1:(0.1~0.5);The YbF that the step 3 is obtained3-Ho/TiO2Powder and terpinol are changed on heterojunction structure
Mass ratio be 1:(2~7);The YbF that the step 3 is obtained3-Ho/TiO2The quality of powder and ethanol is changed on heterojunction structure
Than for 1:(2~5).
TiO described in present embodiment2It is by 80 percent anatase titanium dioxide and 20 percent rutile
Type titanium dioxide is mixed to get.
HNO described in this city embodiment step one3Concentration be 98%.
Present embodiment is prepared for a kind of dye-sensitized solar cell anode, and preparation method is simple.Using this implementation
The upper conversion light anode dye sensitization for the heterojunction structure that dye-sensitized solar cell anode prepared by mode is prepared is too
Positive energy battery has following advantage compared with traditional light anode dye-sensitized cell:
1st, photoelectric respone is generated near infrared light, improves utilization rate of the battery to sunshine.
2、YbF3The upper conversion nano particles of-Ho can pass through YbF3- Ho and TiO2Heterogeneous interface directly by excitation state electronics
Inject TiO2In conduction band, the short circuit current flow of battery is improved;
3rd, through YbF3-Ho/TiO2The visible ray being converted on heterojunction structure powder can be sensitized agent N719 and absorb,
Improve the short circuit current flow of battery;
4th, the YbF of this heterojunction structure3-Ho/TiO2TiO can be promoted2The separation of middle photo-generate electron-hole, extends electronics
In the life-span, be conducive to the raising of cell photoelectric performance.
5、YbF3-Ho/TiO2The above advantage of heterojunction structure powder causes this based on YbF3-Ho/TiO2On heterojunction structure
The DSSC of the light anode composition of conversion nano powder has less transmission resistance, is conducive to the fast of electronics
Speed transmission;The life-span increase of light induced electron in battery so that the photoelectric transformation efficiency of battery is relative to existing TiO2P25 light anodes
Battery improves 27%, and short circuit current flow improves 28%.
Embodiment two:Present embodiment from unlike embodiment one:Ho described in step one2O3With
Yb2O3Mol ratio is 1:50.76.Other steps and parameter are identical with embodiment one.
Embodiment three:Present embodiment from unlike embodiment one or two:Mixed described in step one
The quality and HNO of compound3Volume ratio be 1g:5.28mL.Other steps and parameter are identical with embodiment one or two.
Embodiment four:Unlike one of present embodiment and embodiment one to three:In step one
Temperature be 90 DEG C under conditions of dissolve by heating 20min.Other steps and parameter are identical with one of embodiment one to three.
Embodiment five:Unlike one of present embodiment and embodiment one to four:In step one
6h is dried under conditions of 110 DEG C of temperature.Other steps and parameter are identical with one of embodiment one to four.
Embodiment six:Unlike one of present embodiment and embodiment one to five:Will in step 2
Synthetic product, which is transferred in water heating kettle, carries out hydro-thermal reaction, and hydrothermal temperature is 180 DEG C, and the hydro-thermal time is 18h.Other steps and ginseng
Number is identical with one of embodiment one to five.
Embodiment seven:Unlike one of present embodiment and embodiment one to six:Institute in step 2
State NH4HF2Quality and deionized water volume ratio be 1g:20.8mL.Other steps and parameter and embodiment one to six
One of it is identical.
Embodiment eight:Unlike one of present embodiment and embodiment one to seven:Institute in step 3
The upper conversion YbF that the step of stating two obtains3- Ho nano particles and TiO2Mass ratio be 1:19.Other steps and parameter with it is specific
One of embodiment one to seven is identical.
Embodiment nine:Unlike one of present embodiment and embodiment one to eight:Institute in step 4
The YbF that the step of stating three obtains3-Ho/TiO2The mass ratio of powder and ethyl cellulose is changed on heterojunction structure into 1:0.27;Institute
State the YbF that step 3 is obtained3-Ho/TiO2The mass ratio of powder and terpinol is changed on heterojunction structure into 1:4.68;The step
Three obtained YbF3-Ho/TiO2The mass ratio of powder and ethanol is changed on heterojunction structure into 1:2.98.Other steps and parameter with
One of embodiment one to eight is identical.
Embodiment ten:A kind of application of dye-sensitized solar cell anode of present embodiment is that dyestuff is quick
Change upper conversion light anode DSSC of the solar battery light anode as anode for preparing heterojunction structure;Institute
The upper photoelectric transformation efficiency for changing light anode DSSC of heterojunction structure is stated into 8.2%~8.4%;It is described different
The upper short circuit current flow for changing light anode DSSC of matter structure is 19.4mAcm2~20.2mAcm2。
Beneficial effects of the present invention are verified by following examples:
Embodiment one:A kind of preparation method of dye-sensitized solar cell anode of the present embodiment is specifically by following
What step was carried out:
First, by Yb2O3And Ho2O3Mixing, obtains mixture, adds mixture to HNO3In, it is then 90 DEG C in temperature
Under conditions of dissolve by heating 20min, then dry 6h under conditions of 110 DEG C of temperature, obtain Yb (NO3)3With Ho (NO3)3;Institute
State Ho2O3With Yb2O3Mol ratio is 1:50.76;The quality and HNO of the mixture3Volume ratio be 1g:5.28mL;
2nd, by NH4HF2It is dissolved in deionized water, obtains NH4HF2Solution;Yb (the NO that step one is obtained3)3And Ho
(NO3)3It is dissolved in deionized water, obtains mixed liquor;Then mixed liquor is added dropwise to by NH with 60 drops/min speed4HF2Solution
In, use HF to adjust pH value for 4~5 after mixing completely, obtain synthetic product;Synthetic product is transferred in water heating kettle and enters water-filling
Thermal response, hydrothermal temperature is 180 DEG C, and the hydro-thermal time is 18h, and hydro-thermal obtains hydrothermal product after finishing, and hydrothermal product is naturally cold
But to room temperature, then it is centrifuged with 12000rpm speed, obtains white depositions, white depositions is first used and gone
Ion water washing 3 times, then using washes of absolute alcohol 3 times, sediment after being cleaned, sediment after cleaning is placed in into temperature is
Dried in 100 DEG C of vacuum drying chamber after 2h, then be placed in temperature to calcine 2h in 500 DEG C of Muffle furnace, naturally cool to room temperature,
Obtain conversion YbF3- Ho nano particles;The NH4HF2Quality and deionized water volume ratio be 1g:20.8mL;
3rd, the upper conversion YbF for obtaining step 23- Ho nano particles and TiO2Mixing, it is 500 DEG C to be subsequently placed in temperature
2h is calcined in Muffle furnace, room temperature is naturally cooled to, YbF is obtained3-Ho/TiO2Powder is changed on heterojunction structure;The step 2 is obtained
To upper conversion YbF3- Ho nano particles and TiO2Mass ratio be 1:19;
4th, the YbF for obtaining step 33-Ho/TiO2Powder, ethyl cellulose, terpinol and second are changed on heterojunction structure
Alcohol is uniformly mixed, and slurry is made, and silk-screen printing is carried out to slurry using 250 mesh silk screens, will with 1 DEG C/min heating rate
Temperature rises to 500 DEG C from room temperature, is then incubated 0.5h at a temperature of 500 DEG C, obtains dye-sensitized solar cell anode;
The YbF that the step 3 is obtained3-Ho/TiO2The mass ratio of powder and ethyl cellulose is changed on heterojunction structure into 1:0.27;Institute
State the YbF that step 3 is obtained3-Ho/TiO2The mass ratio of powder and terpinol is changed on heterojunction structure into 1:4.68;The step
Three obtained YbF3-Ho/TiO2The mass ratio of powder and ethanol is changed on heterojunction structure into 1:2.98.
Fig. 1 is obtained YbF in the step 3 of embodiment one3-Ho/TiO2The scanning electron microscope (SEM) photograph of powder is changed on heterojunction structure;
Fig. 2 is obtained YbF in the step 3 of embodiment one3-Ho/TiO2The transmission electron microscope picture of powder is changed on heterojunction structure;Can from figure
To confirm the presence of heterogeneous interface in heterojunction structure.
Fig. 3 is obtained YbF in the step 3 of embodiment one3-Ho/TiO2Changed on heterojunction structure powder respectively in ethanol and
Fluorescent spectrum curve comparison diagram in N719 ethanol solutions, wherein 1 is fluorescent spectrum curve in ethanol, 2 be in N719 second
Fluorescent spectrum curve in alcoholic solution;In N719 ethanol solutions, the remitted its fury of up-conversion fluorescence emission peak, it was demonstrated that
YbF3-Ho/TiO2The up-conversion luminescence of powder is changed on heterojunction structure to be absorbed by N719, be conducive to improving the short of battery
Road electric current.
Embodiment two:The dye-sensitized solar cell anode that embodiment one is obtained is heterogeneous for preparing as anode
The upper conversion light anode DSSC of structure.
Fig. 4 is the TiO being sensitized without sensitizer N7192P25 light anodes DSSC with without sensitizer
The short circuit current flow for the upper conversion light anode DSSC of heterojunction structure that the embodiment two of N719 sensitizations is obtained with
Open-circuit voltage correlation curve, wherein 1 is the upper conversion light of the heterojunction structure obtained without the sensitizer N719 embodiments two being sensitized
Anode DSSC, 2 be the TiO being sensitized without sensitizer N7192P25 light anode batteries;Can be with from figure
Find out YbF3The upper conversion nano particles of-Ho can pass through YbF3- Ho and TiO2Heterogeneous interface directly by excitation state electron injection
TiO2In conduction band, the short circuit current flow of battery is improved.
Fig. 5 is TiO2The upper conversion light anode dye sensitization for the heterojunction structure that P25 light anodes battery is obtained with embodiment two
The transient state spectrum correlation curve of solar cell, wherein 1 is the upper conversion light anode dyestuff for the heterojunction structure that embodiment two is obtained
Sensitization solar battery, 2 be TiO2P25 light anode DSSCs;As can be seen from the figure this heterojunction structure
YbF3-Ho/TiO2TiO can be promoted2The separation of middle light induced electron, extends electron lifetime.
Fig. 6 is TiO2The upper conversion for the heterojunction structure that P25 light anodes DSSC is obtained with embodiment two
Open-circuit voltage attenuation verses' curve of light anode DSSC, wherein 1 is the heterojunction structure that embodiment two is obtained
Upper conversion light anode DSSC, 2 be TiO2P25 light anode DSSCs;Can from figure
It is this based on YbF to find out3-Ho/TiO2The dye sensitization of solar electricity of the light anode composition of conversion nano powder on heterojunction structure
The life-span increase of light induced electron in pond.
Fig. 7 is TiO under illumination condition2The hetero-junctions that P25 light anodes DSSC is obtained with embodiment two
The upper conversion light anode DSSC of structure AC impedance contrast collection of illustrative plates, wherein 1 be embodiment two obtain it is different
The upper conversion light anode DSSC of matter structure, 2 be TiO2P25 light anode DSSCs;From
It can be seen from the figure that is this to be based on YbF3-Ho/TiO2The dye sensitization that the light anode of conversion nano powder is constituted on heterojunction structure is too
Positive energy battery has less transmission resistance, is conducive to the quick transmission of electronics.
Fig. 8 is TiO2The upper conversion for the heterojunction structure that P25 light anodes DSSC is obtained with embodiment two
Short circuit current flow of the light anode DSSC in the case where simulating under conditions of 1.5G sunshines contrasts bent with open-circuit voltage
Line, wherein 1 is the upper conversion light anode DSSC for the heterojunction structure that embodiment two is obtained, 2 be TiO2P25 light
Anode DSSC;As can be seen from the figure it is this to be based on YbF3-Ho/TiO2Conversion nano powder on heterojunction structure
The DSSC of the light anode composition of body improves the short circuit current flow and open-circuit voltage of battery so that the light of battery
Photoelectric transformation efficiency is improved.
Claims (10)
1. a kind of preparation method of dye-sensitized solar cell anode, it is characterised in that DSSC light sun
What the preparation method of pole was specifically carried out according to the following steps:
First, by Yb2O3And Ho2O3Mixing, obtains mixture, adds mixture to HNO3In, it is then 50 DEG C~90 in temperature
15min~45min is dissolved by heating under conditions of DEG C, 4h~10h is then dried under conditions of 90 DEG C~150 DEG C of temperature, is obtained
Yb(NO3)3With Ho (NO3)3;The Ho2O3With Yb2O3Mol ratio is 1:(40~100);The quality and HNO of the mixture3's
Volume ratio is 1g:(1~7) mL;
2nd, by NH4HF2It is dissolved in deionized water, obtains NH4HF2Solution;Yb (the NO that step one is obtained3)3With Ho (NO3)3It is molten
In deionized water, mixed liquor is obtained;Then mixed liquor is added dropwise to by NH with 50 drops/min~80 drops/min speed4HF2Solution
In, use HF to adjust pH value for 1~7 after mixing completely, obtain synthetic product;Synthetic product is transferred in water heating kettle and enters water-filling
Thermal response, hydrothermal temperature is 150 DEG C~200 DEG C, and the hydro-thermal time is 12h~24h, and hydro-thermal obtains hydrothermal product after finishing, by water
Hot naturally cools to room temperature, is then centrifuged with 3000rpm~15000rpm speed, obtains white precipitate
Thing, white depositions are first adopted and are washed with deionized 2~5 times, then using washes of absolute alcohol 2~5 times, are sunk after being cleaned
Starch, sediment after cleaning is placed in the vacuum drying chamber that temperature is 100 DEG C and dried after 1h~5h, then it is 300 to be placed in temperature
DEG C~600 DEG C of Muffle furnace in calcine 0.5h~4h, naturally cool to room temperature, obtain conversion YbF3- Ho nano particles;It is described
NH4HF2Quality and deionized water volume ratio be 1g:(10~50) mL;
3rd, the upper conversion YbF for obtaining step 23- Ho nano particles and TiO2Mixing, it is 100 DEG C~600 to be subsequently placed in temperature
DEG C Muffle furnace in calcine 0.5h~5h, naturally cool to room temperature, obtain YbF3-Ho/TiO2Powder is changed on heterojunction structure;Institute
State the upper conversion YbF that step 2 is obtained3- Ho nano particles and TiO2Mass ratio be 1:(3~20);
4th, the YbF for obtaining step 33-Ho/TiO2Powder, ethyl cellulose, terpinol and ethanol are changed on heterojunction structure equal
It is even to mix, slurry is made, silk-screen printing is carried out to slurry using 250 mesh silk screens, with 1 DEG C/min heating rate by temperature
200 DEG C~700 DEG C are risen to from room temperature, 0.5h~5h is then incubated at a temperature of 200 DEG C~700 DEG C, dye sensitization is obtained too
Positive energy battery light anode;The YbF that the step 3 is obtained3-Ho/TiO2The matter of powder and ethyl cellulose is changed on heterojunction structure
Amount is than being 1:(0.1~0.5);The YbF that the step 3 is obtained3-Ho/TiO2The matter of powder and terpinol is changed on heterojunction structure
Amount is than being 1:(2~7);The YbF that the step 3 is obtained3-Ho/TiO2Powder is changed on heterojunction structure and the mass ratio of ethanol is
1:(2~5).
2. a kind of preparation method of dye-sensitized solar cell anode according to claim 1, it is characterised in that step
Ho described in rapid one2O3With Yb2O3Mol ratio is 1:50.76.
3. a kind of preparation method of dye-sensitized solar cell anode according to claim 1, it is characterised in that step
The quality and HNO of mixture described in rapid one3Volume ratio be 1g:5.28mL.
4. a kind of preparation method of dye-sensitized solar cell anode according to claim 1, it is characterised in that step
In rapid one 20min is dissolved by heating under conditions of temperature is 90 DEG C.
5. a kind of preparation method of dye-sensitized solar cell anode according to claim 1, it is characterised in that step
In rapid one 6h is dried under conditions of 110 DEG C of temperature.
6. a kind of preparation method of dye-sensitized solar cell anode according to claim 1, it is characterised in that step
Synthetic product is transferred in water heating kettle in rapid two and carries out hydro-thermal reaction, hydrothermal temperature is 180 DEG C, the hydro-thermal time is 18h.
7. a kind of preparation method of dye-sensitized solar cell anode according to claim 1, it is characterised in that step
NH described in rapid two4HF2Quality and deionized water volume ratio be 1g:20.8mL.
8. a kind of preparation method of dye-sensitized solar cell anode according to claim 1, it is characterised in that step
The upper conversion YbF that the step of described in rapid three two obtains3- Ho nano particles and TiO2Mass ratio be 1:19.
9. a kind of preparation method of dye-sensitized solar cell anode according to claim 1, it is characterised in that step
The YbF that the step of described in rapid four three obtains3-Ho/TiO2The mass ratio of powder and ethyl cellulose is changed on heterojunction structure into 1:
0.27;The YbF that the step 3 is obtained3-Ho/TiO2The mass ratio of powder and terpinol is changed on heterojunction structure into 1:4.68;Institute
State the YbF that step 3 is obtained3-Ho/TiO2The mass ratio of powder and ethanol is changed on heterojunction structure into 1:2.98.
10. the application of dye-sensitized solar cell anode prepared by method as claimed in claim 1, it is characterised in that be by
Dye-sensitized solar cell anode is used for the upper conversion light anode dye sensitization of solar for preparing heterojunction structure as anode
Battery;The upper photoelectric transformation efficiency for changing light anode DSSC of the heterojunction structure into 8.2%~
8.4%;The upper short circuit current flow for changing light anode DSSC of the heterojunction structure is 19.4mA/cm2~
20.2mA/cm2。
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CN103646786A (en) * | 2013-12-23 | 2014-03-19 | 哈尔滨工业大学 | Preparation method for Er3+ and Yb3+ co-doping TiO2-xFx dye-sensitized solar cell photo-anode |
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