Welcome to
Dr. Jun YAN WEBSITE
Dr. Yan received his B.Eng. in Information Display and Photoelectric Technology at South China University of Technology (SCUT) in 2012 and Ph.D. degree in Material Physics and Chemistry under the supervision of Prof. Hongbin Wu and Prof. Yong Cao (Academician of Chinese Academy of Sciences) at SCUT in 2018. He was a visiting PhD student in Prof. Jenny Nelson's group (Fellow of the Royal Society) in Department of Physics at Imperial College London between March 2017 and May 2018 and continued his research as a post-doctoral research associate in Jenny Nelson group at Imperial from January 2019 to December 2022. He joined The Chinese University of Hong Kong, Shenzhen as an assistant professor in May 2023.
Dr. Yan's research focuses on using combined theoretical and experimental approaches to understand the dynamics of excited and charge separated states of organic molecular optoelectronic devices, including photovoltaics, light-emitting-diodes, and photodetectors. His research has been published in top journals, such as Nature Materials (2), Physical Review X (2) and Nature Communications, citation >3000.
Device Physics and Modelling Group
"Bridging the gap between molecules and devices"
My group focuses primarily on the physics of molecular electronic materials and devices, and is particularly interested in device physics and modelling, with an ambition to connect molecular properties to device properties.
We develop models to simulate the complete process from exciton generation to charge collection in the case of photon-to-electricity conversion, with coupled excited state and charge separated state dynamics. The reverse process can also be modelled using the same modelling framework.
Our modelling framework can be coupled to experimental set-ups, allowing accurate determination of microscopic properties of molecules and devices. Our aim is to reveal the physical mechanisms behind organic electronic materials and devices and eventually facilitate the development and commercialization of organic optoelectronics.
ORCID: http://orcid.org/0000-0001-9966-4357
Web of Science: https://www.webofscience.com/wos/author/rid/AAD-2292-2021
Google Scholar: https://scholar.google.com/citations?user=bLyw5ygAAAAJ&hl=en
5 representative publications:
Excited state:
[1] M. Azzouzi#, J. Yan#, T. Kirchartz, K. Liu, J. Wang, H. Wu, and J. Nelson, Nonradiative Energy Losses in Bulk-Heterojunction Organic Photovoltaics, Phys. Rev. X 8, 031055 (2018). https://doi.org/10.1103/PhysRevX.8.031055
[2] J. Yan*, E. Rezasoltani, M. Azzouzi, F. Eisner, and J. Nelson*, Influence of static disorder of charge transfer state on voltage loss in organic photovoltaics, Nature Communications 12, 3642 (2021). https://doi.org/10.1038/s41467-021-23975-3
[3] J. Yan, X. Rodríguez-Martínez*, D. Pearce, H. Douglas, D. Bili, M. Azzouzi, E. Rezasoltani, F. Eisner, A. Virbule, E. Rezasoltani, V. Belova, B. Dorling, S. Few, A. A. Szumska, X. Hou, G. Zhang, Hin-Lap Yip, M. Campoy-Quiles*, J. Nelson*. Identifying structure-absorption relationship and predicting absorption strength of nonfullerene acceptors in organic photovoltaics. Energy & Environ. Sci., 15, 2958-2973 (2022). https://doi.org/10.1039/D2EE00887D
Charge separated state:
[1] B. Xiao, P. Calado, R. C. I. MacKenzie, T. Kirchartz, J. Yan*, and J. Nelson, Relationship between Fill Factor and Light Intensity in Solar Cells Based on Organic Disordered Semiconductors: The Role of Tail States, Phys. Rev. Appl. 14, 024034 (2020). https://doi.org/10.1103/PhysRevApplied.14.024034
[2] L. Zhu, M. Zhang, J. Xu, C. Li, J. Yan*, G. Zhou, W. Zhong, T. Hao, J. Song, X. Xue, Z. Zhou, R. Zeng, H. Zhu, C. Chen, R.C.I. MacKenzie, Y. Zou, J. Nelson, Y. Zhang, Y. Sun*, F. Liu*, Single-junction organic solar cells with over 19% efficiency enabled by a refined double-fibril network morphology. Nature Materials, 21, 656–663 (2022). https://doi.org/10.1038/s41563-022-01244-y
