Wide bandgap semiconductor optics, including fluorescence manifestations of many-body quantum correlations such as exciton-phonon-photon interactions.

Ensemble fluorescence and related phenomena of localised electronic states in solids, including the distribution functions of localised states and their roles.

Luminescence quantum properties of few and single semiconductor quantum dots and luminescent colour centres.

Fabrication and quantum optical properties of optically pumped and electrically pumped diamond single-photon sources.

Basic principles of ancient Chinese bronze alloy translucent mirrors.

Committee Member, Semiconductor Specialised Committee, Chinese Physical Society

Committee Member, Optical Physics Specialised Committee, Chinese Physical Society

Senior Member, Optica (formerly Optical Society of America)

Associate Editor, Journal of Semiconductors

Associate Editor, Journal of Electronic Materials

Editorial Board Member, Opto-Electronic Advances

Editorial Board Member, Scientific Reports

Advisory Board Member, Journal of Materials Science & Technology

NSFC Overseas and Hong Kong-Macao Outstanding Youth Fund, 2010

Second Prize of Natural Science Award, Ministry of Education, 2019

Shanghai Distinguished Expert (Special Appointment), 2020

Overseas Expert, Chinese Academy of Sciences, 2021

Changjiang Chair Professor and National Distinguished Expert, Ministry of Education, 2023

Sept. 1980 – Jul. 1984: B.Eng., Department of Automation Engineering, Hebei Institute of Technology

Aug. 1984 – Aug. 1986: Technician, 705 Factory (Semiconductor Device Factory), Renqiu, Hebei

Sept. 1986 – Mar. 1989: M.Eng., Department of Electronic Engineering, Xi’an Jiaotong University

Sept. 1989 – Mar. 1993: Ph.D., Department of Electronic Engineering, Xi’an Jiaotong University

Jan. 1993 – May 1995: Postdoctoral Fellow, Institute of Semiconductors, Chinese Academy of Sciences (National Ministry of Personnel)

Jun. 1995 – Dec. 1996: Postdoctoral Fellow, Department of Electrical and Electronic Engineering, National University of Singapore (Singapore Science and Technology Board)

Jan. 1997 – Dec. 1998: Research Fellow, Institute of Materials Research and Engineering, Singapore

Dec. 1998 – Aug. 2022: Research Assistant Professor, tenure-track Assistant Professor, tenured Associate Professor, tenured Professor, Department of Physics, The University of Hong Kong

Nov. 2020 – present: Distinguished Professor, Department of Optical Science and Engineering, School of Information Science and Technology, Fudan University

Previously taught at The University of Hong Kong: Waves and Optics, Laser and Spectroscopy, General Physics, What are we made of: the fundamental nature of matter (university-wide general education course), Electromagnetism, etc. Planning to teach Quantum Optics and other courses at Fudan University.

1. Luminescence and thermal behaviors of free and trapped excitons in cesium lead halide perovskite nanosheets

X Lao, Z Yang, Z Su, Z Wang, H Ye, M Wang, X Yao, S Xu

Nanoscale 10 (21), 9949-9956, 2018.

2. Huang–Rhys factor and its key role in interpreting the optical properties of solids

Xu Shijie

Huang-Rhys factor and its key role in the interpretation of some optical properties of solids

Xu Shi-Jie

Acta Physica Sinica Acta Physica Sinica 68, 166301, 2019.

3. Analytic

S-Shaped Temperature Dependence of Peak Positions of the

Localized-State Ensemble Luminescence and Application in the Analysis of

Luminescence in Non-and Semi-Polar InGaN/GaN Quantum-Wells Micro-Array

Xiaorui Wang and Shijie Xu

Chinese Physics Letters 39 (10), 107801, 2022.

4. Wide-Bandgap Semiconductors Frontier Series-《 "Optical Characterisation of Wide-Bandgap Semiconductor Microstructures and Optoelectronic Devices" 》，Xidian University Press， August 20221st edition， Xu Shijie et al., editor

5. Temperature-Dependent Electroluminescence of Phosphor-Converted White LEDs With K₂SiF₆: Mn⁴⁺ Below Room Temperature

D Zhang, Y Zheng, K Lu, Z Wang, F Tang, J Ning, S Xu, C Zheng

IEEE Electron Device Letters 43 (4), 600-603, 2022.

6. Large Negative Thermal Quenching and Broadening Lineshape Analysis of Acceptor-Associated Yellow Luminescence in Si-Doped GaN

X Wang, D Zhao, J Ning, D Yu, S Xu

The Journal of Physical Chemistry C 126 (48), 20686-20693, 2022.

7. Manipulation of Temperature-Dependent Luminescence Behaviors of Mn 4+ -Activated Fluoride Phosphors

D Zhang, J Zhou, X Cao, X Ge, F Tang, C Zheng, J Ning, S Xu

The Journal of Physical Chemistry Letters 14 (28), 6464-6469, 2023.

8. High-excited-state splitting and multimode vibrational coupling in Mn 4+ -activated fluoride phosphor

D Zhang, W Ye, X Cao, J Zhou, F Tang, C Zheng, J Ning, S Xu

Science China Physics, Mechanics & Astronomy 67 (3), 234212, 2024.

9. Optical properties of Sr 2 LuNbO 6 :Mn 4+ deep-red phosphor: crystal-field splitting and multimode vibrational coupling

G Zhou, D Zhang, F Tang, C Zheng, J Ning, S Xu

Science China Materials 67 (3), 939-945, 2024.

10. Optical Detection of Passive Thermal Lattice Deformation of Monolayer WS 2 in van der Waals Heterostructures of WS 2 /h-BN

J Zhou, X Cao, D Zhang, W Ye, C Zheng, K Watanabe, T Taniguchi, Jiqiang Ning, Shijie Xu

Journal of Alloys and Compounds 999, 174895, 2024.

11. Abnormal Temperature Dependence of Huang–Rhys Factor and Exciton Recombination Kinetics in CsPbBr 3 Perovskite Quantum Dots

D Zhang, X Cao, C Liu, M Chen, W Ye, J Zhou, X Fan, G You, C Zheng, J Ning, S Xu

The Journal of Physical Chemistry Letters 15 (44), 11015-11021, 2024.

12. Self-absorption effects of internal luminescence in one-dimensional nanowires with and without localized states

X Fan, S Xu

Journal of Applied Physics 137 (3), 035702, 2025.