1. Molecular doping in organic semiconductors
2. Doped organic optoelectronic devices, such as solar cell
3. Ionic and electronic mixed conductors, application in organic electrochemical transistor

2017.04 – present    Xi'an Jiaotong University, China   Associate Professor
2013.09 – 2017.02   University of Toronto, Canada    Postdoc

2008.09 – 2013.07,    Chinese Academy of Sciences, China     Ph.D in Physical Chemistry
2004.09 – 2008.06,  Huazhong University of Science and Technology, China   Bachelor in Material Science and Engineering

2017  Young Talent Support Plan of Xi’an Jiaotong University

1. Xue, W.; Tang, Y.; Zhou, X.; Tang, Z.; Zhao, H.; Li, T.; Zhang, L.; Liu, S. F.; Zhao, C.*; Ma, W.*; Yan, H.* Identifying the Electrostatic and Entropy-Related Mechanisms for Charge-Transfer Exciton Dissociation at Doped Organic Heterojunctions. Adv. Funct. Mater. 2021, 31, 2101892.
2. Yan, H.; Ma, W.* Making Weak Dopants Strong. Nature Mater. 2019, 18, 1269.
3. Yan, H.*; Tang, Y.; Sui, X.; Liu, Y.; Gao, B.; Liu, X.; Liu, S. F.; Hou, J.; Ma, W.* Increasing Quantum Efficiency of Polymer Solar Cells with Efficient Exciton Splitting and Long Carrier Lifetime by Molecular Doping at Heterojunctions. ACS Energy Lett. 2019, 4, 1356.
4. Yan, H.*; Chen, J.; Zhou, K.; Tang, Y.; Meng, X.; Xu, X.; Ma, W.* Lewis Acid Doping Induced Synergistic Effects on Electronic and Morphological Structure for Donor and Acceptor in Polymer Solar Cells. Adv. Energy Mater. 2018, 8, 1703672.
5. Yan, H.; Manion, J. G.; Yuan, M.; García de Arquer, F. P.; McKeown, G. R.; Beaupré, S.; Leclerc, M.; Sargent, E. H.; Seferos, D. S.* Increasing Polymer Solar Cell Fill Factor by Trap-filling with F4-TCNQ at Parts Per Thousand Concentration. Adv. Mater. 2016, 28, 6491.
6. Yan, H.; Song, Y.; McKeown, G. R.; Scholes, G. D. *; Seferos, D. S.* Adding Amorphous Content to Highly Crystalline Polymer Nanowire Solar Cells Increases Performance. Adv. Mater. 2015, 27, 3484.