时　间：2019年11月1日上午10:00

地　点：高等研究院530会议室

报告人：王凯，宾夕法尼亚州立大学，研究助理教授

报告题目：Multi-Functional Halide Perovskites for High-Performance Optoelectronics

报告简介：

Halide perovskite materials have become one of the research hot topics in the field of optoelectronics, demonstrating superior solar electricity conversion efficiency over 25% and high performance in photodetectors lasers and light emitting diodes (LEDs). In this talk, I will present several recent progresses in our group following but not limited to above directions, including i) strategies for simultaneously improving the solar cell stability and efficiency, ii) defect-free single-crystalline perovskite, and iii) unexpected discoveries of highly conductive layer edge states (LES) in 2D perovskite. We will show the fundamentals from molecular scale of the halide perovskite materials and their structural expansion to lower-dimensional derivatives, which combinedly have exhibited superior performance in photovoltaic, photo-detector, and photothermal applications. These materials and inhered physical merits will provide a new avenue towards multi-functional optoelectronic applications and novel directions to interdisciplinary researches.