Welcome to Laser Spectroscopy Lab.

 

Highlights

 

 

A generalized model for temperature-dependent time-resolved photocurrent of minority charge carriers in doped

semiconductors is developed. The model is then applied to quantitatively interpret the time-resolved photo-
current data of a GaInP solar cell at different temperatures. Moreover, an analytical relationship between

photocurrent and photoluminescence lifetimes is derived for the minority carriers. Under the conditions of zero
external electric field, mobility and hence diffusion coefficient of minority carriers can be obtained from the
measured photocurrent and photoluminescence lifetimes. This study thus may provide a deeper insight into the
effective lifetimes of functional carriers in doped semiconductors and even in solar cells.Published on Solar Energy Materials and Solar Cells.DOI: 10.1016/j.solmat.2019.01.029

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A new analytical model was developed by addressing the significant contributions of free electron in the conduction band of semiconductor besides the trapped electrons in shallow donors, which is able to quantitatively interpret the non-exponential decay patterns of phosphorescence signal and abnormal temperature behaviors. This is an important progress in understanding the long persistent phosphorescence.

 

 

 

See details in PCCP, inside cover paper.

 

Latest News

August 2017

Dr. Zhang Jun(张俊) joins our group.

 

August 2017

Mr. Wang Xiaorui (王晓瑞) joins our group to pursue his studies.

 

 

August 2016

Mr. Lao Xiangzhou (劳祥周) will join our group to pursue his studies.

 

April 2016

Dr. Tang Fei (唐飞) and Dr. Ye Honggang (耶红刚) will join our group.

 

August 2015

Mr. Bao Yitian(包一天) will join our group to pursue his studies.

 

July 2015

Group alumni, Dr. Zheng Changcheng (郑昌成), was successfully awarded a NSFC Youth project funding. Congratulations!

 

June 2015

Prof. Xu was selected as Senior Member of OSA and Member of Photonics Detection Technical Group Executive Committee of OSA.

 

June 2015

Prof. Xu was invited to serve as Member of Editorial Board of Scientific Reports.

 

May 2015

Prof. Xu Shijie visited Tsinghua University (THU) from May 23th to 27th, 2015, and gave two seminars in Department of Electronic Engineering and Institute of Microelectronics at THU, respectively.

 

May 2015

Mr. Wang Xiaohu (王小虎) passed his oral defense for his PhD degree on May 29th, 2015, which was examined by Prof. Qian He (Tsinghua Univ), Prof. Gao Ju (HKU), Dr. Ling CC (HKU) and Prof. Xu Shijie (HKU). Congratulations!

 

 

 

 

May 2015

Dr. Deng Zhuo (邓卓) was offered by a local high-tech company located in Science Park in Hong Kong.

Congratulations!

 

March 2015

Mr. Deng Zhuo (邓卓) successfully passed his oral defense for his PhD degree, which was examined by Prof. Luo Yi (Tsinghua University), Profs. Gao Ju, Cui Xiaodong and Xu Shijie (HKU). 

Congratulations!

 

 

 

February 2015

Dr. J. Q. Ning (宁吉强) passed his oral defense and was offered CAS "Hundred Talent Professorship" by Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences. Congratulations!

 

 

 

January 2015

Group alumni, Dr. Zheng Changcheng (郑昌成) was awarded 2014 "Double Talent" honor and grant by Jiangsu Province. Congratulations!

 

 

Updated 30/11/2017