title: Exceptionally Stable CH3NH3PbI3Films in Moderate Humid Environmental Condition.
abstract: An unprecedentedly stable CH3NH3PbI3film synthesized by a modified chemical vapor transport methodis demonstrated. The results show that the crystal structure, light absorption, and device efficiency do not degrade after storing for 100 d in air with 40% relative humidity, while the conventional solution-processed perovskites are usually stable for less than 20 d in similar conditions.
authors: Department of Physics The Chinese University of Hong Kong Shatin, N.T. Hong Kong China.
authors: Baohua
authors: B
authors: Wang
authors: Department of Physics The Chinese University of Hong Kong Shatin, N.T. Hong Kong China.
authors: Tao
authors: T
authors: Chen
keywords: chemical vapor transport; moisture stability; perovskite; photovoltaic devices; solar cells