2016年第15期（No.378since 2001）
时间：2016年9月8日（星期四）下午 15:00－16:30
Time： 3:00pm, Sept.8, 2016 (Thursday)
地点：北京大学物理西楼202报告厅
Venue： Hall 202, Physics Building West
Title：Nanoscale Imaging of Structural and Optical Properties of Nitride Nano-Structures Using Helium Temperature Scanning Transmission Electron Microscopy Cathodoluminescence
Abstract：Three-dimensional microrod light emitting diodes (LEDs) are promising candidates for future solid state lighting due to a very high crystalline quality and an increased effective light emitting area in comparison to conventional planar devices. For a detailed understanding of the complex core-shell layer structure of nitride based microrods, a systematic determination and correlation of the structural, optical, and electronic properties on a nanometer-scale is essential. In this letter, we present a unique approach for a direct one-by-one correlation of high-aspect ratio InGaN/GaN core-shell microrods using low-temperature cathodoluminescence spectroscopy directly in a scanning transmission electron microscope.
Speaker： Prof. Frank Bertram
About Speaker：Education and Training:
- Habilitation 2012: venia legendi in “Experimental Physics”at the Otto-von-Guericke-University Magdeburg, Germany
- Dissertation 1999: Ph.D. in physics (“summa cum laude”)
Research and Professional Experience:
- Ass. professor 2001 – today: Institute of Solid State Physics, Universityof Magdeburg, Germany
- Visiting Scientist: 02/1998 – 03/1998:Institute of Scientific and Industrial Research ISIR,Osaka University, Japan
- Visiting Scientist: 03/2015 – 06/2015: in the group of Prof. Chichibu, Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University Sendai, Japan (JSPS grant)
- Postdoc 02/2000 – 07/2001: in the group of Fernando Ponce. Dep. of Physics and Astronomy, Arizona StateUniversity, Tempe, AZ, USA
- Awards 1992 - 1999: Scholarship of the “Studienstiftung des Deutschen Volkes”
Publications:
- More than 150 publications in peer reviewed journals, > 2600 citations, h-index = 26
- Since 1998 more than 410 contributions on scientific conferences including 25 invited talks.
联系教授：王新强
Host professor：XinqiangWang， wangshi@pku.edu.cn
