CN109346604A - A kind of perovskite solar battery - Google Patents
A kind of perovskite solar battery Download PDFInfo
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- CN109346604A CN109346604A CN201811145373.2A CN201811145373A CN109346604A CN 109346604 A CN109346604 A CN 109346604A CN 201811145373 A CN201811145373 A CN 201811145373A CN 109346604 A CN109346604 A CN 109346604A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/10—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation comprising heterojunctions between organic semiconductors and inorganic semiconductors
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
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- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/80—Manufacture or treatment specially adapted for the organic devices covered by this subclass using temporary substrates
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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Abstract
The invention discloses a kind of perovskite solar battery, structure is glass, anode ITO, anode modification layer nickel oxide, active layer FAPb from bottom to top0.75Sn0.25I3, the first cathodic modification layer PC60BM, the second cathodic modification layer BCP, cathode silver.Because the relatively traditional PEDOT:PSS of the crystal grain of the perovskite on nickel oxide is big, the mobility of charge is higher, can produce higher short circuit current and external quantum efficiency, and then obtain bigger photoelectric conversion efficiency.
Description
Technical field
The present invention relates to a kind of structure of solar battery, preparation method more particularly to a kind of perovskite solar batteries
Structure, preparation method.
Background technique
Energy problem has become one of the global problem of most serious of the puzzlement mankind.The annual energy-output ratio of the mankind
Still it is being continuously increased, while the reserves of fossil fuel are but constantly declining, it is anticipated that after even decades centuries, give work
Industry society brings the fossil fuel of huge prosperity exhausted at last, therefore the substitute for finding fossil fuel is extremely urgent.Solar energy
As a kind of reproducible energy form, have the characteristics that inexhaustible, nexhaustible, is a kind of very potential new energy
Source.Currently, solar battery is a kind of form using solar energy being most widely used.For a long time, have benefited from high turn
Efficiency and outstanding stability are changed, silicon solar cell is always most important solar battery, other types of solar-electricity
Pond is although multifarious, but is all difficult to shake the dominant position of silion cell.In recent years, the different army of perovskite solar battery is prominent
It rises, becomes nova of greatest concern in solar battery family, and the very potential dominance for touching silion cell.With scientific research
The photoelectric conversion efficiency of the unremitting effort of personnel, perovskite solar battery constantly refreshes record, at present highest conversion effect
Rate can be to 22% or so.Another big advantage of perovskite solar battery is can be prepared using solwution method, is suitble to low
Cost, the preparation process of large area, and can be prepared in flexible substrate, obtain flexible solar battery.
Metallic element in traditional perovskite active layer is usually lead, results in the high toxicity of perovskite battery, in order to
It reduces toxicity and still maintains excellent battery performance, scientific research personnel, instead of the lead element of part, is reduced with tin element
The toxicity of perovskite battery and no damage photoelectric conversion efficiency.On the other hand, as shown in Figure 1, in perovskite solar-electricity
One layer of anode modification layer would generally be arranged in order to enhance the transmittability in hole in Chi Zhong between anode and active layer, traditional
Anode modification layer generally use PEDOT:PSS (poly- 3,4-ethylene dioxythiophene/poly styrene sulfonate).This is that one kind can
It is prepared using solwution method and commercialized material, however, find after study, in above-mentioned stanniferous perovskite battery,
The crystal grain very little of perovskite material on PEDOT:PSS, this results in more crystal boundaries to occur, to inhibit electrons and holes
Mobility, and the inhibition of mobility will reduce the short circuit current of solar battery, and finally reduce incident photon-to-electron conversion efficiency.In order to
The incident photon-to-electron conversion efficiency with the stanniferous perovskite battery of low toxicity is improved, needing to find a kind of can make stanniferous perovskite material
Crystal grain increase anode modification layer, while the anode modification layer preferably stand good in low cost solwution method preparation process.
Summary of the invention
The object of the present invention is to provide a kind of perovskite solar batteries, with nickel oxide anode modification layer.
The device architecture of the perovskite solar battery includes substrate, anode, anode modification layer, activity from bottom to top
Layer, cathodic modification layer, cathode.
The substrate is glass, and the anode is ITO (tin indium oxide), and the anode modification layer is nickel oxide (NiOx),
The active layer is FAPb0.75Sn0.25I3(FA represents NH2CH=NH2Group), the cathodic modification layer PC60BM ([6,6]-benzene
Base-C61- methyl butyrate) and BCP (2,9- dimethyl -4,7- diphenyl -1,10- phenanthrene sound of vomiting quinoline), the cathode is silver.
The active layer of the perovskite solar battery substitutes part lead element using nontoxic tin element, obtain it is a kind of compared with
The perovskite solar battery of hypotoxicity.
The present invention also provides a kind of preparation methods of perovskite solar battery, comprising the following steps:
1) it cleans ito glass substrate: being successively respectively cleaned by ultrasonic in glass detergent, deionized water, acetone, aqueous isopropanol
10min then with being dried with nitrogen, and handles 15min in UV ozone cleaning machine;
2) it prepares nickel oxide layer: aoxidizing nickel solution with sol evenning machine spin coating on ito glass substrate after cleaning, speed is
4000rpm, time 240s, then the thermal annealing 15min in nitrogen atmosphere, annealing temperature are 150 DEG C, then are put into air hot
Anneal 60min, and annealing temperature is 300 DEG C;
3) it prepares active layer: substrate is reached into nitrogen glove box, with the perovskite solution that sol evenning machine spin coating is stanniferous, speed is
2000rpm, time 60s, then drip upper chlorobenzene solution at once and extracted, the spin speed of chlorobenzene solution is 5000rpm, time
For 30s, then 100 DEG C at a temperature of anneal 30min;
4) the first cathodic modification layer: spin coating PC is prepared60BM solution, speed 3000rpm, time 30s;
5) it prepares the second cathodic modification layer: transferring substrates into vacuum coating equipment, BCP, thickness are deposited using the method for hot evaporation
It is 5 nanometers;
6) it prepares cathode: silver being deposited using the method for hot evaporation, with a thickness of 80 nanometers.
Relative to traditional PEDOT:PSS anode modification layer, the stanniferous perovskite crystal grain prepared on nickel oxide is bigger, brilliant
Crystal boundary between grain is less, and the mobility of charge is higher, so as to generate biggish short circuit current, and then realizes higher light
Electrotransformation efficiency.Meanwhile the nickel oxide in the present invention is prepared using spin-coating method, simple process, and current PEDOT:PSS
Price is still more expensive, and in comparison nickel oxide has more cost advantage.
Detailed description of the invention
Fig. 1 is the device architecture of perovskite solar battery in the prior art.
Fig. 2 is the device architecture of the perovskite solar battery of the embodiment of the present invention.
Fig. 3 is the SEM figure of the perovskite active layer of the embodiment of the present invention, and left figure is the perovskite on NiOx, and right figure is
Perovskite on PEDOT:PSS.
Fig. 4 is the I-V test curve of the embodiment of the present invention.
Fig. 5 is the external quantum efficiency test curve of the embodiment of the present invention.
Specific embodiment
Further illustrate is made to the present invention With reference to embodiment.
1) clean ito glass substrate: successively each ultrasound is clear in glass detergent, deionized water, acetone, aqueous isopropanol
10min is washed, then with being dried with nitrogen, and handles 15min in UV ozone cleaning machine;
2) it prepares nickel oxide layer: aoxidizing nickel solution with sol evenning machine spin coating on ito glass substrate after cleaning, speed is
4000rpm, the time 240, then the thermal annealing 15min in nitrogen atmosphere, annealing temperature are 150 DEG C, then are put into air hot
Anneal 60min, and annealing temperature is 300 DEG C;
3) it prepares active layer: substrate is reached into nitrogen glove box, with the perovskite solution that sol evenning machine spin coating is stanniferous, speed is
2000rpm, time 60s, then drip upper chlorobenzene solution at once and extracted, the spin speed of chlorobenzene solution is 5000rpm, time
For 30s, then 100 DEG C at a temperature of anneal 30min;
4) the first cathodic modification layer: spin coating PC is prepared60BM solution, speed 3000rpm, time 30s;
5) it prepares the second cathodic modification layer: transferring substrates into vacuum coating equipment, BCP, thickness are deposited using the method for hot evaporation
It is 5 nanometers;
6) it prepares cathode: silver being deposited using the method for hot evaporation, with a thickness of 80 nanometers.
Wherein, the oxidation nickel solution in step 2) the preparation method comprises the following steps: nickel nitrate is dissolved in ethylene glycol solution, and add
For ethylenediamine as stabilizer, the volume ratio of ethylenediamine and ethylene glycol is 1: 40, and the concentration of nickel nitrate is 1.33M, molten by what is prepared
Liquid is in 80 DEG C of agitating and heating 4h.
Wherein, the stanniferous perovskite solution in step 3) is FAPbI3Solution and FASnI3Solution is mixed with 3: 1 volume ratio
Solution made of conjunction, wherein FAPbI3Solution is according to FAI: PbI2: MACl: MABr: CsCl=1.3M: 1.55M: 0.3M: 0.2M
: raw material is dissolved in DMSO solution by the proportion of 0.1M, and (MA represents CH3NH3Group), FASnI3Solution is according to FAI: SnI2∶SnF2=
Raw material is dissolved in DMSO solution by 1.55M: 1.55M: 0.155M proportion.
Obtained solar battery structure as shown in Figure 2 using the above method, from bottom to top are as follows: glass, anode ITO,
Anode modification layer nickel oxide, active layer FAPb0.75Sn0.25I3, the first cathodic modification layer PC60BM, the second cathodic modification layer BCP, yin
It is extremely silver-colored.
As shown in figure 3, the crystal grain of the perovskite in left figure above nickel oxide is obviously than the calcium titanium on PEDOT:PSS in right figure
The crystal grain of mine is big, and crystal boundary is less, and charge can be improved in mobility wherein.Biggish short circuit current can be generated (such as Fig. 4 institute
Show) and external quantum efficiency EQE (as shown in Figure 5).From the test result of table 1 also it will be clear that final solar-electricity
Pond efficiency increases to 17.25% from 14.24%, and efficiency improves 21% or so.
Table 1
Claims (4)
1. a kind of perovskite solar battery, it is characterised in that: from bottom to top include glass, anode ITO, anode modification layer oxidation
Nickel, active layer FAPb0.75Sn0.25I3, the first cathodic modification layer PC60BM, the second cathodic modification layer BCP, cathode silver.
2. a kind of preparation method of perovskite solar battery, which comprises the following steps:
1) it cleans ito glass substrate: being successively respectively cleaned by ultrasonic in glass detergent, deionized water, acetone, aqueous isopropanol
10min then with being dried with nitrogen, and handles 15min in UV ozone cleaning machine;
2) it prepares nickel oxide layer: aoxidizing nickel solution with sol evenning machine spin coating on ito glass substrate after cleaning, speed is
4000rpm, the time 240, then the thermal annealing 15min in nitrogen atmosphere, annealing temperature are 150 DEG C, then are put into air hot
Anneal 60min, and annealing temperature is 300 DEG C;
3) it prepares active layer: substrate is reached into nitrogen glove box, with the perovskite solution that sol evenning machine spin coating is stanniferous, speed is
2000rpm, time 60s, then drip upper chlorobenzene solution at once and extracted, the spin speed of chlorobenzene solution is 5000rpm, time
For 30s, then 100 DEG C at a temperature of anneal 30min;
4) the first cathodic modification layer: spin coating PC is prepared60BM solution, speed 3000rpm, time 30s;
5) it prepares the second cathodic modification layer: transferring substrates into vacuum coating equipment, BCP, thickness are deposited using the method for hot evaporation
It is 5 nanometers;
6) it prepares cathode: silver being deposited using the method for hot evaporation, with a thickness of 80 nanometers.
3. preparation method as claimed in claim 2, which is characterized in that in step 2) oxidation nickel solution the preparation method comprises the following steps:
Nickel nitrate is dissolved in ethylene glycol solution, and adds ethylenediamine as stabilizer, the volume ratio proportion of ethylenediamine and ethylene glycol is 1
: 40, the concentration of nickel nitrate is 1.33M, by the solution prepared in 80 DEG C of agitating and heating 4h.
4. preparation method as claimed in claim 2, which is characterized in that the perovskite solution in step 3) is FAPbI3Solution with
FASnI3The solution that solution is mixed with 3: 1 volume ratio, wherein FAPbI3Solution is according to FAI: PbI2∶MACl∶MABr∶
Raw material is dissolved in DMSO solution, FASnI by CsCl=1.3M: 1.55M: 0.3M: 0.2M: 0.1M proportion3Solution is according to FAI:
SnI2∶SnF2Raw material is dissolved in DMSO solution by=1.55M: 1.55M: 0.155M proportion.
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Cited By (5)
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CN109728167A (en) * | 2018-12-12 | 2019-05-07 | 浙江师范大学 | A kind of perovskite solar battery |
CN110212100A (en) * | 2019-06-11 | 2019-09-06 | 浙江浙能技术研究院有限公司 | A kind of continuous preparation process of perovskite thin film large area |
CN112838166A (en) * | 2021-01-22 | 2021-05-25 | 西交利物浦大学 | Perovskite solar cell and preparation method thereof |
CN113506853A (en) * | 2021-06-25 | 2021-10-15 | 南京邮电大学 | Preparation method and product of heterojunction tin-based perovskite thin film |
CN114256422A (en) * | 2021-12-07 | 2022-03-29 | 华能新能源股份有限公司 | Perovskite solar cell for slowing down ion migration and preparation method thereof |
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CN113506853A (en) * | 2021-06-25 | 2021-10-15 | 南京邮电大学 | Preparation method and product of heterojunction tin-based perovskite thin film |
CN113506853B (en) * | 2021-06-25 | 2024-04-12 | 南京邮电大学 | Preparation method and product of heterojunction tin-based perovskite film |
CN114256422A (en) * | 2021-12-07 | 2022-03-29 | 华能新能源股份有限公司 | Perovskite solar cell for slowing down ion migration and preparation method thereof |
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Application publication date: 20190215 |