Presentation

Prof. Feng Gao is leading a research group focusing on organic and perovskite semiconductors at Linköping University. He works as a full professor at Linköping since 2020. Before that, he was associate professor (2017-2020), assistant professor (2015-2017), and Marie Skłodowska-Curie Individual Fellow (2013-2015) at Linköping. He received his Docent from Linköping in 2016, his PhD degree from the University of Cambridge in 2011, and his B.S. and M.S. degrees from Nanjing University in 2004 and 2007, respectively. He works at the interfaces between physics, chemistry, and materials science, focusing on the development of novel optoelectronic devices for energy technologies.

Research

Prof. Gao’s group dedicates its efforts to energy devices, with the ambition to both improve device performance and understand the underlying fundamentals. Their current investigations include organic semiconductors and metal halide perovskites, with research focuses such as:

Organic semiconductors

Organic semiconductors have a large potential in low-cost and large-area device applications, benefiting from cheap manufacturing processes such as solution-based roll-to-roll printing.

All device applications previously dominated by inorganic semiconductors have presented opportunities for their organic counterparts. Such applications include solar cells, LEDs, field-effect transistors, lasers, and memory devices.

Metal halide perovskites

Metal halide perovskites have emerged as one of the most popular semiconducting materials since 2009. They have shown unique properties, including:

  • Tunable bandgap
  • High absorption coefficient
  • Broad absorption spectrum
  • High charge carrier mobility
  • Long charge diffusion lengths

These properties enable metal halide perovskites to be used in a broad range of photovoltaic and other optoelectronic applications.

Solar cells

Although the current solar cell market is dominated by silicon-based devices, the recent emergence of solution-processed solar cells based on organic semiconductors and metal halide perovskites has shown great potential for commercial applications. For example, the power conversion efficiency of perovskite solar cells has soared from a few percent to over 25% within the past few years. Such a quick development has never before happened in the history of photovoltaics.

LEDs

LEDs, which emit light by a solid-state process called electroluminescence, are considered the most promising energy-efficient technologies for future lighting and displays. Metal halide perovskites demonstrate strong photoluminescence and tunable emission energy, making them a promising candidate for the next generation of highly efficient LEDs.

Funding

Prof. Gao's research group is mainly supported by the following funding agencies:

Group and Supervision

Prof. Feng Gao is deeply involved in both the scientific and career development of his group members. The senior researchers in his group have been awarded the prestigious VR Staring Grant, Marie Skłodowska-Curie Individual Fellowship, VINNMER Fellowship. He also values the exchange of ideas: he has sponsored members of his group in exchanges to Cambridge, Oxford and EPFL, and his group has hosted visiting students and scholars from Cambridge, Zhejiang University, Nanjing University, Nanjing Tech University, Shenzhen University, Queen Mary University of London, and more.

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Publication list

2021

Haibing Xie, Zaiwei Wang, Zehua Chen, Carlos Pereyra, Mike Pols, Krzysztof Galkowski, Miguel Anaya, Shuai Fu, Xiaoyu Jia, Pengyi Tang, Dominik Jozef Kubicki, Anand Agarwalla, Hui-Seon Kim, Daniel Prochowicz, Xavier Borrise, Mischa Bonn, Chunxiong Bao, Xiaoxiao Sun, Shaik Mohammed Zakeeruddin, Lyndon Emsley, Jordi Arbiol, Feng Gao, Fan Fu, Hai I Wang, Klaas-Jan Tielrooij, Samuel D. Stranks, Shuxia Tao, Michael Graetzel, Anders Hagfeldt, Monica Lira-Cantu (2021) Decoupling the effects of defects on efficiency and stability through phosphonates in stable halide perovskite solar cells Joule , Vol. 5 , s. 1246-1266 Continue to DOI
Tao Liu, Tao Yang, Ruijie Ma, Lingling Zhan, Zhenghui Luo, Guangye Zhang, Yuan Li, Ke Gao, Yiqun Xiao, Jianwei Yu, Xinhui Zou, Huiliang Sun, Maojie Zhang, Top Archie Dela Pena, Zengshan Xing, Heng Liu, Xiaojun Li, Gang Li, Jianhua Huang, Chunhui Duan, Kam Sing Wong, Xinhui Lu, Xugang Guo, Feng Gao, Hongzheng Chen, Fei Huang, Yongfang Li, Yuliang Li, Yong Cao, Bo Tang, He Yan (2021) 16% efficiency all-polymer organic solar cells enabled by a finely tuned morphology via the design of ternary blend Joule , Vol. 5 , s. 914-930 Continue to DOI