High Performance Planar Structure Perovskite Solar Cells Using a Solvent Dripping Treatment on Hole Transporting Layer

Coatings

Xuhui Wang¹  Min Zhang¹  Gang Lu¹  Yanbo Liu¹  Yali Gao¹  Long Zhou²  Zhenhua Lin² 

[1] Qinghai Huanghe Upstream Hydropower Development Co., Ltd., Photovoltaic Industry Technology Branch, Photovoltaic Technology Co., Ltd., of Huanghe Hydropower, Xining 810000, China;State Key Discipline Laboratory of Wide Band Gap Semiconductor Tecchnology, Shaanxi Joint Key Laboratory of Graphene, School of Microelectronics, Xidian University, Xi’an 710071, China;

关键词: perovskite solar cells;    pedot:pss;    solvent dripping treatment;    interface engineering;   

DOI  :  10.3390/coatings10020127

来源: DOAJ

【 摘 要 】

Perovskite solar cell efficiency is not only related with material properties, but also affected by the interface engineering that used in perovskite solar cells. The perovskite film/electrode interface properties play important roles in charge carrier extraction, transport, and recombination. To achieve better interface contact for the device operation, proper interlayers or surface treatment should be applied. In this study, we applied a poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) interlayer with a solvent/solution washing treatment as the hole transport layer. It showed that by the solvent/solution treatment, the PEDOT:PSS film conductivity was significantly enhanced, and hence, the charge carrier transfer efficiency was efficiently improved, and the device short-circuit current density was enlarged. Finally, the device efficiency significantly increased from 14.8% to 16.2%.

【 授权许可】

Unknown