title: Uniform, stable, and efficient planar-heterojunction perovskite solar cells by facile low-pressure chemical vapor deposition under fully open-air conditions.
abstract: Recently, hybrid perovskite solar cells (PSCs) have attracted extensive attention due to their high efficiency and simple preparing process. Herein, a facile low-pressure chemical vapor deposition (LPCVD) technology is first developed to fabricate PSCs, which can effectively reduce the over-rapid intercalating reaction rate and easily overcome this blocking issue during the solution process. As a result, the prepared uniform perovskite films exhibit good crystallization, strong absorption, and long carrier diffusion length. More strikingly, CH3NH3PbI3 absorbers by LPCVD demonstrate excellent moisture-resistant feature even under laser illumination and high-temperature conditions, which indicates that our proprietary method is very suitable for the future low-cost, nonvacuum production of the new generation photovoltaic devices. Finally, high efficiency of 12.73% is successfully achieved under fully open-air conditions. To the best of our knowledge, this is the first report of efficient PSCs with such a high humidity above 60%.
authors.affiliation: Department of Materials Science and Engineering, Hefei University of Technology , Hefei, Anhui 230009, P.R. China.
authors.forename: Paifeng
authors.initials: P
authors.lastname: Luo
authors.forename: Zhaofan
authors.initials: Z
authors.lastname: Liu
authors.forename: Wei
authors.initials: W
authors.lastname: Xia
authors.forename: Chenchen
authors.initials: C
authors.lastname: Yuan
authors.forename: Jigui
authors.initials: J
authors.lastname: Cheng
authors.forename: Yingwei
authors.initials: Y
authors.lastname: Lu
keywords: high-quality films; low-pressure chemical vapor deposition; perovskite solar cells; planar-heterojunction; stability