title: Distinct exciton dissociation behavior of organolead trihalide perovskite and excitonic semiconductors studied in the same system.
abstract: The nonexcitonic character for organometal trihalide perovskites is demonstrated by examining the field-dependent exciton dissociation behavior. It is found that photogenerated excitons can be effectively dissociated into free charges inside perovskite without the assistance of charge extraction layer or external field, which is a stark contrast to the charge-separation behavior in excitonic materials in the same photovoltaic operation system.
authors: Department of Mechanical and Materials Engineering and Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln, NE, 68588-0526, USA.
authors: Miao
authors: M
authors: Hu
authors: Cheng
authors: C
authors: Bi
authors: Yongbo
authors: Y
authors: Yuan
authors: Zhengguo
authors: Z
authors: Xiao
authors: Qingfeng
authors: Q
authors: Dong
authors: Yuchuan
authors: Y
authors: Shao
authors: Jinsong
authors: J
authors: Huang
keywords: Organolead trihalide perovskites; dielectric constants; dissociation; excitons; perovskites, external quantum efficiency