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Mats Fahlman

Professor, Head of Division, Head of Unit

Principal Investigator in Surface Physics and Chemistry, Laboratory of Organic Electronics
Director, Laboratory of Organic Electronics

Presentation

Though my early interests included quantum chemical modeling of electronic structure in condensed organic materials, my research is now centered on experimental studies of semiconducting and conducting organic and hybrid organic systems.

The approach is to do "basic" science on topics of technological importance. A wide variety of surface science techniques are used with emphasis on photoelectron spectroscopy and x-ray absorption, carried out at synchrotron radiation laboratories and using XPS/UPS equipment in our labs.

Publications

2027

Lu Liu, Xinran Zeng, Zhennan Lin, Xuelin Wang, Yan Wang, Di Li, Jiyuan Chen, Jinxiang Wang, Lixuan Kan, Bin Zhao, Xiaoyun Wan, Menghui Jia, Zaifei Ma, Yongbo Yuan, Yuning Wu, Liming Ding, Zhigao Hu, Bo Li, Shaobing Xiong, Zhenrong Sun, Junhao Chu, Mats Fahlman, Qinye Bao (2027) A majority-dominant contact for efficient perovskite photovoltaics with extremely high open-circuit voltage of 1.221 V Materials science & engineering. R, Reports, Vol. 172, Article 101289 (Article in journal) https://dx.doi.org/10.1016/j.mser.2026.101289

2026

Junfu Tian, Andreas W. Erhardt, Silan Zhang, Mrinalni Lyer, Weidong Li, Xiane Li, Elena Chulanova, Benjamin J. Willner, Yuyun Yao, Weimin Zhang, Adam Marks, Rachael Found, Jin Yang, Mats Fahlman, George G. Malliaras, Iain McCulloch (2026) Post-Fabrication Deprotection of Semiconducting Polymers for High-Performance Organic Electrochemical Transistors Journal of the American Chemical Society (Article in journal) https://dx.doi.org/10.1021/jacs.6c12759
Zhen Gao, Weidong Li, Heng Liu, Xian'e Li, Qilun Zhang, Tong Liu, Haiyan Li, Xianjie Liu, Liangmin Yu, Xichang Bao, Xiaofeng Xu, Liming Ding, Iain McCulloch, Xinhui Lu, Mats Fahlman, Chuanfei Wang (2026) Interfacial Potential Compensation for HOMO Alignment in Ternary Organic Solar Cells Small, Vol. 22, Article e74562 (Article in journal) https://dx.doi.org/10.1002/smll.74562
Jinpeng Yang, Tingyu Jiao, Wei Li, Bo Xu, Mats Fahlman, Satoshi Kera, Xianjie Liu (2026) Evolution ofthe Electronic Structure of Hybrid Organic-InorganicHalide Perovskite Single Crystals upon Alkali Metal Doping The Journal of Physical Chemistry Letters, Vol. 17, p. 9448-9456 (Article in journal) https://dx.doi.org/10.1021/acs.jpclett.6c01932
Di Zhu, Judith Pons I Tarres, Joost Kimpel, Meghna Jha, Mariavittoria Craighero, Jesika Asatryan, Alberto Peinador Veiga, Zesheng Liu, Tania Cecilia Hidalgo, Megan M. Westwood, Mats Fahlman, Jaime Martin, Alexander Giovannitti, Christian Müller (2026) Ambient direct arylation synthesis of thienothiophene based copolymers with mixed alkoxy and oligoether side chains Chemical Science, Vol. 17, p. 13030-13041 (Article in journal) https://dx.doi.org/10.1039/d6sc01881e

Research

XPS-maskin

Surface Physics and Chemistry

The overall goal of our unit is to do basic science on topics that can have a positive impact on society. We do general surface physics and chemistry research related to e.g. energy materials, devices and catalytic processes.

News

Ångströmhuset

Major investment in new equipment for materials research

The Wallenberg Initiative Materials Science for Sustainability, WISE, donates SEK 44 million to Linköping University for new scientific equipment that will contribute to cutting-edge materials research.
Person (Qilun Zhang) in a blue lab coat in the lab.

Wood materials make for reliable organic solar cells

Lignin can be used to create stable and environmentally friendly organic solar cells. Researchers at LiU and KTH have now shown that untreated kraft lignin can be used to improve organic solar cells further.
Xiane Li in the lab.

New light on organic solar cells

Efficient and environmentally friendly solar cells are required for a transition to a fossil-free energy supply. Researchers at LiU have mapped how energy flows in organic solar cells, something that previously had been unknown.

Organisation

Power plant, organic electronics, a red rose.

Laboratory of Organic Electronics

World-leading competence in organic and hybrid materials, from design and modeling to applications in energy, electronics and bioelectronics. Sustainability focus and pipeline from science to commercialization deliver high-impact innovation.
Small colored lights

Department of Science and Technology (ITN)

We research and teach in several technical and scientific disciplines in which our main areas are organic electronics, media, communications and logistics.