报告题目：Film Morphology and Device Structure Engineering for Perovskite Solar Cells and LEDs
报 告 人：肖正国 教授 中国科学技术大学
报告时间：2019年4月10日10: 00（星期三）
报告地点：安徽大学磬苑校区理工B楼303多功能报告厅
主办单位：电子信息工程学院
欢迎各位老师、同学届时前往！
科学技术处
2019年4月8日
报告摘要:
Hybrid perovskites are emerging as a new generation of solution processed semiconducting materials with fantastic optoelectronic properties. Solar cells and light-emitting diodes (LEDs) incorporating these perovskites are rapidly becoming serious contenders to rival the leading technologies. Photovoltaic power conversion efficiencies have jumped from 3% to over 23% in seven years, and external quantum efficiency of perovskite LEDs has increased dramatically from 0.1% to over 20% in the past four years.
In my talk, I will give an overview of hybrid perovskite materials and its unique optoelectronic properties that have led to these efficiency breakthroughs. I will then focus on a couple of techniques that I have developed to increase the performance of perovskite solar cells and LEDs. I will cover topics including: 1) preparation of high quality perovskite films by a two-step solution process and solvent annealing, 2) investigation of ion migration in perovskite films and its application, and 3) highly efficient visible and infrared perovskite LEDs featuring nanometer sized crystals.