Negative photoconductivity in Cs<sub>4</sub>PbBr<sub>6</sub> single crystal
Ye Yuan, Qing Yao, Jie Zhang, Kaiyu Wang, Weiwei Zhang, Tianliang Zhou, Haiqing Sun, Jianxu Ding
Abstract
Negative photoconductivity is firstly observed in large size Cs<sub>4</sub>PbBr<sub>6</sub> single crystal that grown from Cs-rich solution. The Br vacancy and free excitons are responsible for this novel phenomena.
Topics & Concepts
PhotoconductivitySingle crystalMaterials scienceCrystallographyOptoelectronicsChemistryPerovskite Materials and ApplicationsSolid-state spectroscopy and crystallography2D Materials and Applications