PKUSZ Center for Organic Semiconductors & Optoelectronics-Materials change the world !

Dr. Hao YAN


Dr. Hao YAN (严浩博士)




Dr. Hao YAN joined the Prof Hong MENG’s group as a post-doc fellow in November 2021. He completed his PhD in Organic Semiconductor Physics in 2021 under the supervision of Prof Ji-Seon Kim at Imperial College London, UK. During his PhD, he had strong collaborations with the Cambridge Display Technology, Ltd (Cambridge University), Samsung, and GIST(Korea). Dr. Hao YAN was also a visiting researcher in Prof Martin Vacha’s group at Tokyo Institute of Technology, Japan, under the Imperial-Tokyo Tech Exchange Programme in 2019-2020.

Dr. Hao YAN’s main research is focused on charge carrier injection and transport properties, and degradation mechanisms of solution-processed organic optoelectronic devices, such as OLEDs (polymers, or TADFs), OPVs and OPDs. This includes utilizing a variety of characterization techniques, such as ex or in-situ Raman spectroscopy, Single-molecule spectroscopy, GIWAXS, and energetic analyzing techniques (APS, UPS, Kelvin Probe).



2017– 2021   Ph.D. in Solid-State Physics       Imperial College London, UK

♦ Supervisor: Prof. Ji-Seon Kim

Nanoanalysis group and Centre for Processable Electronics

2015 – 2017  M.Sc. in Material Science           University of Sheffield, UK

Supervisor: Prof. Xiangbing ZENG

2011 – 2015  B.Sc. in Chemistry            Hunan Normal University, China



2021 - till now  Post-doc fellow                     Peking University, China

Host: Prof. Hong MENG

2019 – 2020  Visiting Researcher         Tokyo Institute of Technology, Japan

Host: Prof. Martin Vacha



(1)   Hao Yan; Saurav Limbu; Xuhua Wang; James Nightingale; Iain Hamilton; Jessica Wade; Sooncheol Kwon*; Kwanghee Lee*; Ji‐Seon Kim*, Efficient Charge Carrier Injection and Balance Achieved by Low Electrochemical Doping in Solution‐Processed Polymer Light‐Emitting Diodes, Advanced Functional Materials, 2019, 29(40): 1904092.(一作)

(2)   Hao Yan; Tzu-Wei Tseng; Shun Omagari; Iain Hamilton; Tomonori Nakamura; Martin Vacha*; Ji-Seon Kim*; Dynamic molecular conformational change leading to energy transfer in F8-5% BSP copolymer revealed by single-molecule spectroscopy, The Journal of Chemical Physics, 2022, 156(7): 074704. invited paper(一作)

(3)   Tzu-Wei Tseng; Hao Yan; Tomonori Nakamura; Shun Omagari; Ji-Seon Kim*; Martin Vacha*; Real-Time Monitoring of Formation and Dynamics of Intra- and Interchain Phases in Single Molecules of Polyfluorene, ACS Nano, 2020, 14(11): 16096-16104

 (4)   Hao Yan, Jessica Wade, Li Wan, Sooncheol Kwon*, Matthew J. Fuchter, Alasdair J. Campbell and Ji-Seon Kim*, Enhancing hole carrier injection via low electrochemical doping on circularly polarized polymer light-emitting diodes, Journal of Materials Chemistry C, 2022, 001010, invited paper. (一作)

(5)   Wangjuan Xue+, Hao Yan+,*, Yaowu He, Lijie Wu, Xinkang Zhang, Jinhao Xu, Junpeng He, Chaoyi Yan, and Hong Meng*; Identifying the Molecular Origins of Green BN-TADF Material Degradation and Device Stability via in situ Raman Spectroscopy, Chemistry-A European Journal, 2022, e202201006. (共同一作、通讯)

(6)   Yuting He, Deyun Zhou*, Cheng Zhang*, Hao Yan*, Yongshuai Chai*; Orange-red and saturated red thermally activated delayed fluorescent dendrimers for non-doped solution-processed OLEDs, Dyes and Pigments, 2022, 203, 110385. (共同通讯)

(7)   Jinhao Xu, Hao Yan*, Muhammad Umair Ali, Lijie Wu, Jingsheng Miao, Jinqiao Cai, Jiaoyi Ning, Biao Yang, Ming Liu, Clifton Kwang-Fu Shen, and Hong Meng*; Efficient NIR Perovskite Light-Emitting Diodes Enabled by Incorporating an Anthracene Derivative as a Bifunctional Electron Transport Layer, ACS Applied Electronic Materials, 2022, 01312. (共同通讯)

(8)   Saurav Limbu; Katherine Stewart; James Nightingale; Hao Yan; Chandran Balamurugan; Soonil Hong; Jehan Kim; Kwanghee Lee; Sooncheol Kwon; Ji-Seon Kim; Solid-State Ionic Liquid: Key to Efficient Detection and Discrimination in Organic Semiconductor Gas Sensors, ACS Applied Electronic Materials, 2021, 3(5): 2152-2163

(9)   Saurav Limbu; Kyung-Bae Park; Jiaying Wu; Hyojung Cha; Sungyoung Yun; Seon-Jeong Lim; Hao Yan; Joel Luke; Gihan Ryu; Chul-Joon Heo; Sunghan Kim; Yong Wan Jin; James R. Durrant; Ji-Seon Kim*; Identifying the Molecular Origins of High-Performance in Organic Photodetectors Based on Highly Intermixed Bulk Heterojunction Blends, ACS Nano, 2020, 15(1): 1217-1228