Partial coverage methylammonium lead bromide films for solar cell application

THIN SOLID FILMS

卷:690

Article

Mhamdi, Asya^1,2  Vicente, Nuria²  Bouazizi, Abdelaziz¹  Garcia-Belmonte, Germa² 

[1] Univ Monastir, Fac Sci Monastir, Lab Mat Condensee & Nanosci, Equipe Dispositifs Elect Organ & Photovolta Mol, Ave Environm, Monastir 5019, Tunisia

[2] Univ Jaume 1, Inst Adv Mat INAM, Castellon de La Plana 12006, Spain

关键词: Perovskite;    Film deposition;    Optical properties;    Photovoltaics;    Methylammonium lead bromide;   

DOI  :  10.1016/j.tsf.2019.137567

来源: Elsevier

【 摘 要 】

Hybrid perovskite compounds as methylammonium lead halides are currently been investigated for different optoelectronic applications. CH3NH3PbBr3 is a promising member because of its electronic structure and large bandgap that gives rise to a high open circuit voltage. Although higher performances can result by using sophisticated processing, one-step methods are particularly interesting because of their easy implementation. Solar cells based on CH3NH3PbBr3 are fabricated using one-step spin coating deposition. Remarkable effect on the morphological, structural, optical and electrical properties is observed by changing the molar ratio of the precursors. Dual film morphology, with micrometer-size CH3NH3PbBr3 crystals embedded in a mesoporous TiO2 background, explains minimal shunting paths and open-circuit voltage reduction. Full perovskite coverage of TiO2 background is not necessary for proper operation.

【 授权许可】

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