Luminescence of Localized-State Ensemble

SJ Xu (徐士杰)

Department of Physics

University of Jong Kong

Localization of electronic states is a ubiquitous phenomenon in solids. It has profound impact on both electrical and optical properties of solids. In the past six decades, the influence of localization of electronic states on electrical properties of solids has been well understood. However，the understanding of influence of localization of electronic states on optical properties of solids has been limited. In the past two decades, much effort has been devoted by us to achieving progress in the understanding of the latter issue. We derived several formulas on the basis of differential rate equations in 2001, 2005 and 2017, respectively, and named these formulas as LSE model. The model is based on a newly-derived distribution function for localized carriers and is capable of giving quantitative interpretation to the commonly observed temperature dependence of luminescence of localized electronic state ensemble. In this talk, I’ll present a report on the model and its application examples.

Speaker biography：SJ Xu (徐士杰) received his PhD degree in Department of Electronic Engineering from Xi’an Jiaotong University in 1993. He is currently a tenured professor in Department of Physics, University of Hong Kong (HKU). In the past double decades, he has fortunately obtained some important findings and developed theoretical models with significant impact. For example, the LSE model has been cited by two famous Germany scholars (C.F. Klingshirn and M. Grundmann) in their classic textbooks-《Semiconductor Optics》and《The Physics of Semiconductors》, respectively.

时间：1月13日（星期一）下午3点

地点：光学楼525