[3月28日] 关于举行新加坡南洋理工大学熊启华教授学术报告会的通知
题目：Strong Light-Matter Interactions in Halide Perovskite Materials
报告人：熊启华教授（南洋理工大学）
主持人：李志远教授
时间：2019年3月28日（星期四）10:30
地点：物理楼（18号楼）二楼第一会议室
欢迎广大师生参加!
物理与光电学院
2018年3月25日
附件：
内容摘要：Halide perovskites have recently attracted tremendous attention due to their remarkable properties as optical gain materials, which have shown high performance in solar cells, light-emitting diodes, photodetectors and many other optoelectronic applications. Deeply rooted in their large oscillator strength, exciton binding energy and accessible synthesis approaches, halide perovskites have shown even broader horizon in optical and optoelectronic perspectives. In this talk, we will start with a historical overview of polariton as a quasiparticle involving phonon or exciton with strong light-matter interactions. Then, we will discuss how the halide perovskites offer new ground to study strong light-matter coupling at room temperature, leading to robust room-temperature new quasiparticle exciton polariton in a few selected all inorganic halide perovskites, demonstrated by experimental realization of room-temperature polariton lasing and spontaneous spatial/temporal coherence. Such realization of polariton BEC at room temperature further manifested the coherent manipulation of polariton condensate in 1D microwire cavity, suggesting ultrafast polaritonic applications. From a perspective point of view, our results suggest the possibility of investigating quantum fluids of light inside perovskite materials at room temperature. In a final recap, we will share our recent measurements of optical properties and strong light-matter coupling in 2D hybrid perovskites, which feature multi-quantum well structures exhibiting considerable promises in manipulating light-matter interaction in both weak and strong coupling regime.
References:
1. R. Su et al., “Room temperature one-dimensional polariton condensate propagation in lead halide perovskites”, Science Advances, DOI: 10.1126/sciadv.aau0244 (2018)
2. K.B. Lin et al., “Perovskite light-emitting diodes with external quantum efficiency exceeding 20 per cent”, Nature 562, 245-248 (2018)
3. G.K. Long et al., “Spin control in reduced-dimensional chiral perovskites”, Nature Photonics12, 528-533 (2018)
4. R. Su et al., “Room temperature polariton lasing in all-inorganic perovskite”, Nano Lett. 17, 3982–3988 (2017)
5. T. Thu Ha Do et al., “Optical study on intrinsic exciton states in a high-quality CH3NH3PbBr3 single crystal”, Phys. Rev. B96, 075308 (2017)
6. Q. Zhang, et al., “Room-temperature near-infrared high-Q perovskite whispering-gallery planar nanolasers”, Nano Lett. 14, 5995-6001 (2014)
报告人简介：熊启华是南洋理工大学数理科学学院和电气电子工程学院双聘教授。美国物理学会会士。1997年本科毕业于武汉大学物理系，2000年从上海应用物理研究所获得硕士学位，2006年于宾夕法尼亚州立大学获得博士学位，师从Peter C. Eklund教授。2006-2009年在哈佛大学Charles Lieber研究组从事博士后研究。2009年初获得新加坡国立研究基金研究员项目资助并于当年6月加入南洋理工大学，任南洋助理教授。2014年获得终身教职，2016年升正教授。熊启华教授的主要研究领域是以稳态和瞬态光谱学为主要实验手段，以光和物质相互作用为研究主题, 着重研究低维半导体纳米材料基于光子-声子-电子耦合作用的物理机制和量子调控。他在纳米光子学和表面等离子体学，激光制冷，以及二维半导体材料光学性质等一系列前沿课题做出了一系列有影响的工作。在《自然》及子刊, 《纳米通讯》，《先进材料》等一系列国际知名杂志上发表了200多篇文章，并被世界知名杂志及大众媒体所报道，总引用次数超过9400次，H-因子57。其出色的研究获得了一些奖励和认可，比如新加坡物理学会纳米科技奖（2015），新加坡国立研究基金NRF Investigatorship奖（2014），和南洋理工大学南洋研究卓越奖（2014）等。 2018年4月起，担任美国光学学会旗舰杂志《Optics Express》副主编。2018年12月起，担任Wiley信息材料领域新创刊杂志《InfoMat》的副主编。
