时间：2021年3月8日 (周一）下午2:00-3:30

Time：2:00-3:30 PM, Monday, March 8th, 2021

地点：云栖校区4号楼213会议室，Zoom直播（会议号：627 2168 5060）

Venue: Room 213, Building 4, Yunqi Campus；ZOOM webinar (Meeting ID: 627 2168 5060)

主持人：西湖大学理学院讲席教授Alexey Kavokin

Host: Alexey Kavokin, Chair Professor, School of Science, Westlake University

主讲嘉宾/Speaker：

Faculty of Physical Sciences of Physical Sciences and ITMO University

主讲人简介/Biography:

Dr. Ivan A. Shelykh focus on excitons in carbon and organic materials, which differ substantially from excitons in semiconductor structures. They usually have bigger binding energies and smaller radia, which enhances their coupling with light and decreases nonlinearities stemming from exciton- exciton interactions. Moreover, the role of the dark states can become crucial: they can have binding energies substantially bigger than those of the bright states, and thus can lead to the luminescence quenching.

讲座摘要/Abstract:

In the talk we will consider two examples of strong light matter coupling physics in organics. First, we will demonstrate how the coupling with photonic mode of planar resonator can lead to the exciton brightening in carbon nanotubes. Second, we will discuss the origin of the blueshift in organic microcavities and claim that it mainly stems from the quenching of the Rabi splitting with increase of the excitonic concentration and not from Coulomb exciton- exciton interactions as in the case of semiconductor microcavities.

讲座联系人/Contact:

理学院 毕懿卿  biyiqing@westlake.edu.cn