报 告 题 目：Stability Study of Perovskite Solar Cells
报 告 人：Dr. Jianfeng Lu,
主 持 人：王鸣魁 教授
报告摘要：Metal-halide perovskite solar cells (PSCs) have attracted tremendous interest because of their low fabrication cost and high power conversion efficiency (PCE) up to 22.7%. To commercialize this promising photovoltaic technology, fabrication of high-efficiency and stably operating cm-sized solar cells is an important and pressing scientific task. Our research is focused on improving the stability of cm-sized perovskite solar cells from several different strategies. Firstly, the metal halide perovskite compositions was optimized with different organic cations, which offered certified 15.2% PCE with improved stability. Second, the perovskite/hole transporting materials interface was optimized with benzenethiol dipole molecules, which successfully modified surface potential of the perovskite and facilitate the hole extraction speed. Cm-sized PSCs with PCE of 19.6% was achieved and the devices stably worked more than 200 h under 50% RH and 50 °C working temperature. On the other hand, we have also designed and synthesized two small molecules as hole transporting materials. Without any dopant, PCE with 17.6% was achieved for the cm-sized PSCs and retained 90% of initial performance 2000 h storage in an ambient environment without encapsulations.
报告人简介：Dr. Jianfeng Lu is senior research fellow in the Department of Chemical Engineering at Monash University and affiliated researcher with the Australia Centre of Advanced Photovoltaic and CSIRO, Australia. Dr. Jianfeng Lu received his PhD at the Huazhong University of Science & Technology in 2015, and was research fellow in 2015-2017 at School of Chemistry at Monash University and became senior research fellow in 2018 at the Department of Chemical Engineering at Monash University. He has published 26 peer-reviewed papers Energy Environmental Science, Advanced Energy Materials and Nano Energy, etc.