Composite hole transport layer and solar cell and preparation method thereof
A hole transport layer and solar cell technology, applied in the field of solar cells, can solve the problems of battery degradation, damage, aggravate hysteresis effect, destroy perovskite structure, etc., achieve the effect of improving degradation, eliminating hysteresis effect, and accelerating degradation
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[0023] The present invention also discloses a method for preparing a perovskite solar cell as described above, comprising the following steps:
[0024] Step 1, preparing an ethanol solution of sulfur-containing materials with a concentration of 0.2-1 mol / L.
[0025] Step 2, preparing nickel oxide on the cleaned transparent conductive substrate.
[0026] Step 3. Soak the nickel oxide substrate prepared in step 2 in the ethanol solution of the sulfur-containing material prepared in step 1 and react at a temperature of 50-100°C for 30min-3h, then take it out for vacuum drying, and then perform high-temperature sintering , and prepare a composite hole transport layer containing nickel sulfide-nickel oxide on the surface of the substrate. The conditions of the vacuum drying are as follows: the temperature is 40-100° C., and the drying time is 10-60 minutes. The sintering treatment is carried out in a muffle furnace, and the sintering conditions are as follows: the sintering tempe...
Embodiment 1
[0032] The first embodiment of the method for preparing a perovskite solar cell of the present invention comprises the following steps:
[0033] 11. Preparation of ethanol solution of sulfur-containing materials: Weigh 0.0751g of thioacetamide and dissolve in 1mL of ethanol, dissolve at 60°C, and prepare 1mol / L thioacetamide solution.
[0034] 12. Preparation of nickel oxide substrate: spin-coat the nickel oxide precursor solution prepared by the solution method on the cleaned FTO substrate, the spin-coating condition is 3000rpm / s, anneal at 100°C for 20min, cool, and the film thickness on the FTO substrate is about 20nm nickel oxide hole transport layer.
[0035] 13. Preparation of composite hole transport layer: Soak the FTO substrate of nickel oxide prepared above in the thioacetamide solution prepared in step 11 at 60°C for 30 minutes, take out the substrate and dry it at 70°C for 10 minutes, and then dry it at 300°C Annealed for 30 minutes to prepare a composite hole tra...
no. 2 Embodiment
[0040] The second embodiment of the method for preparing a perovskite solar cell of the present invention comprises the following steps:
[0041]21. Prepare ethanol solution of sulfur-containing materials: weigh 0.0761g thiourea and dissolve in 1mL ethanol, dissolve at 70°C, and prepare 1mol / L thiourea ethanol solution.
[0042] 22. Preparation of nickel oxide substrate: spin-coat nickel oxide nanoparticle dispersion liquid on the cleaned ITO substrate, and the spin-coating condition is 3000rpm / s. Anneal at 100° C. for 20 minutes, and cool to obtain a nickel oxide hole transport layer with a film thickness of about 20 nm on the ITO substrate.
[0043] 23. Preparation of composite hole transport layer: Soak the nickel oxide-prepared ITO substrate in the 70°C thiourea ethanol solution prepared in step 21 for 30 minutes, take out the substrate and dry it at 80°C for 10 minutes, then anneal at 400°C After 30 minutes, a composite hole transport layer containing nickel oxide-nickel...
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Abstract
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