Photo of Feng Gao

Feng Gao


Organic and perovskite semiconductors for energy technologies. ERC Grantee (StG2016, CoG2021); Wallenberg Academy Fellow 2017; SSF Future Research Leader 2020; Tage Erlander Prize (awarded by the Royal Swedish Academy of Sciences) 2020.


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 2020, Feng Gao 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.


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:

Fullerene-free organic solar cells, including low voltage losses, green solvent processing and new applications.

Nature Energy 2016
Nature Materials 2018
Nature Materials (review) 2018
Nature Energy 2019
Nature Energy 2021
Nature Energy 2021
Nature Energy 2023
Nature Photonics 2023

Perovskite solar cells, with a focus on understanding and improving the stability:

Nature 2019
Science 2022

Perovskite LEDs, with the motivation to improve the device performance and also explore new applications:

Nature Photonics 2019
Nature Electronics 2020
Nature Materials (Review) 2021
Nature Communications 2021

Lead-free perovskites, aiming to tune the optoelectronic properties and explore their magnetic properties:

Advanced Materials (Review) 2019
Science Advances 2020

Perovskites for other applications, e.g. X-ray detection and lasers:

Nature Photonics 2022
Advanced Materials 2023

See the full list of publications at Google Schoolar:

Google Scholar


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, 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.


Electrically pumped lasers are considered as a holy grail in the field of optoelectronics. Recent breakthroughs on optically pumped perovskite lasers and high-performance perovskite LEDs indicate great potential of developing perovskites into a new generation of materials for electrically pumped lasers.


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 (Starting) Grants, 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, Imperial College and EPFL, and his group has hosted visiting students and scholars from Cambridge, Oxford, Zhejiang University, Nanjing University, Nanjing Tech University, Shenzhen University, Queen Mary University of London, and more.


News about Feng Gao

Glowing sheet of glass.

Breakthrough for next-generation digital displays

Researchers at LiU have developed a digital display screen where the LEDs themselves react to touch, light, fingerprints and the user’s pulse, among other things. Their results could be the start of a whole new generation of digital displays.

Sign of Linköping University.

Two new Wallenberg Scholars at LiU

Researchers Feng Gao and Daniel Västfjäll at LiU have been appointed as new Wallenberg Scholars. In addition, six LiU researchers will have their  scholar periods extended. Each researcher receives between SEK 18 and 20 million for five years.

From the lab to a commercial product – a long and difficult road

Researchers at Linköping University are working to create the material for the solar cells of the future. The goal is to produce a commercially viable product. An interdisciplinary research project is to try to find out what it takes.

Bild på en vaccumsputter

Department of Physics, Chemistry and Biology (IFM)

Undergraduate teaching and research in the areas of biology, chemistry, materials and applied physics and theory and modelling are conducted at this department.

Electronic and photonic materials (EFM)

Our division's research is focused on the development of organic electronics for energy conversion and storage.

A road leading to a sunset. 2020 is written on the road with white paint, above it an arrow is pointing in the direction of the horizon.

Three doctoral students to receive Horizon 2020 funding at LiU

Three departments will each host a doctoral student funded by the Marie Skłodowska-Curie actions. The research projects deal with using waste heat to produce electricity, perovskites for photonics, and the rendering of computer-generated images.


Publication list


Xiyu Luo, Weidong Xu, Guanhaojie Zheng, Sandhya Tammireddy, Qi Wei, Max Karlsson, Zhaojun Zhang, Kangyu Ji, Simon Kahmann, Chunyang Yin, Yatao Zou, Zeyu Zhang, Huaiyu Chen, Lucas A. B. Marcal, Haifeng Zhao, Dongxin Ma, Dongdong Zhang, Yue Lu, Mingjie Li, Carsten Deibel, Samuel D. Stranks, Lian Duan, Jesper Wallentin, Wei Huang, Feng Gao (2024) Effects of local compositional heterogeneity in mixed halide perovskites on blue electroluminescence Matter, Vol. 7 Continue to DOI
Ben Zhang, Weijie Chen, Haiyang Chen, Guang Zeng, Rui Zhang, Hongxiang Li, Yunfei Wang, Xiaodan Gu, Weiwei Sun, Hao Gu, Feng Gao, Yaowen Li, Yongfang Li (2024) Rapid solidification for green-solvent-processed large-area organic solar modules with >16% efficiency Energy & Environmental Science Continue to DOI
Haiyang Chen, Weiwei Sun, Rui Zhang, Yuting Huang, Ben Zhang, Guang Zeng, Junyuan Ding, Weijie Chen, Feng Gao, Yaowen Li, Yongfang Li (2024) Heterogeneous Nucleating Agent for High-Boiling-Point Nonhalogenated Solvent-Processed Organic Solar Cells and Modules Advanced Materials Continue to DOI
Kunpot Mopoung, Weihua Ning, Muyi Zhang, Fuxiang Ji, Kingshuk Mukhuti, Hans Engelkamp, Peter C. M. Christianen, Utkarsh Singh, Johan Klarbring, Sergey Simak, Igor Abrikosov, Feng Gao, Irina Buyanova, Weimin Chen, Yuttapoom Puttisong (2024) Understanding Antiferromagnetic Coupling in Lead-Free Halide Double Perovskite Semiconductors The Journal of Physical Chemistry C, Vol. 128, p. 5313-5320 Continue to DOI
Wencai Zhou, Xiaoqing Chen, Rongkun Zhou, Hongbo Cai, Yun Wang, Tiankai Zhang, Zilong Zheng, Feng Gao, Yongzhe Zhang, Hui Yan (2024) The Role of Grain Boundaries on Ion Migration and Charge Recombination in Halide Perovskites Small Continue to DOI
Anna Dávid, Julia Morat, Mengyun Chen, Feng Gao, Mats Fahlman, Xianjie Liu (2024) Mapping Uncharted Lead-Free Halide Perovskites and Related Low-Dimensional Structures Materials, Vol. 17, Article 491 Continue to DOI
Yuxuan Xiao, Qin Xue, Xiaoke Liu, Feng Gao, Guohua Xie (2024) Lead-free perovskite LEDs powered by cyanuric acid INNOVATION, Vol. 5, Article 100553 Continue to DOI
Jiajia Suo, Bowen Yang, Edoardo Mosconi, Dmitry Bogachuk, Tiarnan A. S. Doherty, Kyle Frohna, Dominik J. Kubicki, Fan Fu, Yeonju Kim, Oussama Er-Raji, Tiankai Zhang, Lorenzo Baldinelli, Lukas Wagner, Ayodhya N. Tiwari, Feng Gao, Andreas Hinsch, Samuel D. Stranks, Filippo De Angelis, Anders Hagfeldt (2024) Multifunctional sulfonium-based treatment for perovskite solar cells with less than 1% efficiency loss over 4,500-h operational stability tests Nature Energy Continue to DOI
Fanglong Yuan, Giulia Folpini, Tianjun Liu, Utkarsh Singh, Antonella Treglia, Jia Wei Melvin Lim, Johan Klarbring, Sergey Simak, Igor Abrikosov, Tze Chien Sum, Annamaria Petrozza, Feng Gao (2024) Bright and stable near-infrared lead-free perovskite light-emitting diodes Nature Photonics Continue to DOI


Tianjun Liu, Feng Gao (2023) Molecule additive design for perovskite light-emitting diodes operated at high current densities Chem, Vol. 9, p. 2058-2059 Continue to DOI