Metal halide perovskites for solar cells and LEDs
发布时间:2024-04-23   访问次数:10   作者:材料学院

报告题目:Metal halide perovskites for solar cells and LEDs


Metal halide perovskites have shown great promise for a new generation of optoelectronic devices, including solar cells and light-emitting diodes (LEDs). For perovskite solar cells, I will talk about our efforts to improve the operational stability, mainly through developing a new doping strategy for the spiro-OMeTAD hole-transport layer. In addition to the radicals, we include ionic salts that can further modulate the work function with negligible effects on the film conductivity, critical for reaching optimal open-circuit voltage values by a favorable energetic level alignment. Our findings pave the way for achieving PSCs with high efficiencies and excellent stability at the same time. For perovskite LEDs, a unique feature of perovskites, compared with emissive materials used in other LEDs, is that they can also efficiently detect light, making it possible to develop new applications which are hardly possible for other LED technologies. By making use of this advantage, we recently develop multifunctional displays using highly photo-responsive perovskite LEDs as pixels. Our perovskite LED display can be simultaneously used as touch screen, fingerprint sensor, ambient light sensor, and image sensor without integrating any additional sensors.

开始时间:2024-04-26 周五 10:30



高峰,瑞典林雪平大学教授,光电子研究单元负责人,现在也是西湖大学访问教授。2004年和2007年南京大学物理系获得学士和硕士学位,2011年剑桥大学卡文迪许实验室获得博士学位。随后加入瑞典林雪平大学,先后任职玛丽居里博后研究员 (2013)、助理教授 (2015)、副教授 (2017) 和教授 (2020)。自2023年起担任中国科学-材料杂志的副主编。高峰教授的研究兴趣为可溶液加工的光电器件及机理,主要基于有机和钙钛矿半导体材料。相关工作作为通讯作者发表在Science, Nature, Nature Materials, Nature Photonics, Nature Energy, Nature Electronics等杂志。高峰教授获得瑞典及欧盟的多项人才计划支持,包括瑞典瓦伦堡基金会资助的瓦伦堡学者(Wallenberg Scholar 2024)、瑞典战略研究基金会的未来科研领袖(Future Research Leader 2019)、瓦伦堡基金会的瓦伦堡青年学者(Wallenberg Academy Fellow 2017)、欧洲研究理事会的巩固基金(ERC Consolidator Grant 2021) 和启动基金(ERC Starting Grant 2016)。作为首席科学家主持瑞典瓦伦堡基金的重点前沿科学项目。2020年因在太阳能电池和发光二极管领域的机理研究获得瑞典皇家科学院颁发的塔格·埃兰德首相奖Tage Erlander Prize)。