Device Physics and Material Engineering in Lead Halide Perovskites
Hao-Wu Lin1*
1Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan
* Presenter:Hao-Wu Lin, email:hwlin@mx.nthu.edu.tw
Lead halide perovskites have recently attracted great attention as promising materials not only for solar energy conversion but also for light emission application such as lasers and light emitting diodes (LEDs). The vacuum deposited perovskite solar cells are particularly interesting due to the uniform, large-area fabrication and non-solvent green process. In this talk, I will show some unique methods for fabricating highly efficient perovskite optoelectronic devices. Correlations of photons, charge carriers and device micro-cavities will be discussed. The organometallic Lead halide-based solar cells deliver high power conversion efficiency (PCE) of up to 19%. I will also talk about the inorganic Cesium-based perovskite thin films and solar cells. The CsPbI2Br devices show a high PCE of 11.8%, which is highest reported value in inorganic perovskite solar cells so far. In addition, intriguing light emission properties of perovskite quantum dots will be shown with an amazing stable photoluminescence quantum yield of ~ 100%.


Keywords: Lead halide perovskites, solar cells, photoluminescence quantum yield, carrier dynamics, micro-cavity