Interface modification method for improving environmental stability of perovskite solar cell
A technology of environmental stability and interface modification, applied in the field of solar cells, can solve problems such as the challenge of the service life of perovskite solar cells, and achieve the effects of improving photoelectric conversion efficiency, reducing ion migration channels, and improving environmental stability.
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[0037] The perovskite solar cell device after a kind of interface modification of the present embodiment, its structure comprises successively from top to bottom: gold electrode (anode), hole transport layer (Spiro-OMeTAD), perovskite light-absorbing layer ((FAPbI 3 ) 0.925 (MAPbBr 3 ) 0.05 (CsPbI 3 ) 0.025 ), electron transport layer (SnO 2 ) and ITO conductive glass (cathode), wherein the side and upper surface of the perovskite light-absorbing layer are combined with hexadecyltrimethylammonium hexafluorophosphate (see figure 1 ).
[0038] The battery preparation method is simple, comprising the following steps:
[0039] (1) Put the ITO glass (size: 1.5cm×2.0cm) into tap water containing detergent for 15 minutes, then use acetone, ethanol, and ultrapure water for 15 minutes respectively, and finally take it out and dry it with a hair dryer or an oven Dry (70° C.) to obtain the cleaned ITO conductive glass.
[0040] (2) UV treatment is performed on the cleaned ITO con...
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