My core expertise lies in developing novel materials for renewable energy areas, including perovskite solar cells and organic doping.

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Publons: Researcher-ID, T-2610-2018

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Co-inventor of US8940656B2: CoP2 loaded red phosphorus, preparation and use of the same.


  • 2022-2024 Carl Tryggers Stiftelse, Sweden
  • 2020-2023 Carl Tryggers Stiftelse, Sweden
  • 2020-2023 Olle Engkvists Stiftelse, Sweden 
  • 2020-2021 Formas network, Sweden
  • 2019-2021 STINT, Joint China-Sweden Mobility, Sweden ‘Lead-free perovskites nanocrystals for solar cells’
  • 2019-2022 VR Starting grant, Swedish Research Council, Sweden ‘Develop stable tin-based perovskites for solar cells’
  • 2018-2019 Marie Skłodowska-Curie Individual Fellowship, European Commission, followed by European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 751375
  • 2017-2018 Vinnova Fellowship, Sweden


  • 2018 awarded "Marie Skłodowska-Curie Individual Fellowship" (European Commission, 2018)
  • 2017 awarded "VINNMER Marie-Curie Fellowship" (Sweden, 2017)



I have co-authored 60 peer-reviewed publications (over 7000 citations; h-index 39) and a book chapter (Elsevier)



Tiankai Zhang, Feng Wang, Hak-Beom Kim, In-Woo Choi, Chuan Fei Wang, Eunkyung Cho, Rafal Konefal, Yuttapoom Puttisong, Kosuke Terado, Libor Kobera, Mengyun Chen, Mei Yang, Sai Bai, Bowen Yang, Jiajia Suo, Shih-Chi Yang, Xianjie Liu, Fan Fu, Hiroyuki Yoshida, Weimin Chen, Jiri Brus, Veaceslav Coropceanu, Anders Hagfeldt, Jean-Luc Bredas, Mats Fahlman, Dong Suk Kim, Zhang-Jun Hu, Feng Gao (2022) Ion-modulated radical doping of spiro-OMeTAD for more efficient and stable perovskite solar cells Science, Vol. 377, p. 495-501 Continue to DOI