福利姬

Photo of Alexander Gillett

Alexander Gillett

Assistant Professor

Ultrafast laser spectroscopy on organic semiconductor materials. Wallenberg Academy Fellow 2023.

Biography

Dr Alexander Gillett leads a research group at 福利姬 that focuses on the ultrafast optical spectroscopy of organic semiconductor materials. He started as an Assistant Professor in Linköping in 2024.

Before working at Linköping University, Alexander Gillett was a Leverhulme Early Career Fellow at the University of Cambridge from 2022 – 2024. He received his PhD degree from the University of Cambridge under the Supervision of Prof. Sir Richard Friend in 2019 and worked as a postdoctoral researcher in the same group from 2019 – 2022.

Research

Dr Gillett’s group uses ultrafast optical spectroscopy techniques, such as transient absorption and photoluminescence, to understand the fundamental photophysical processes underpinning the use of organic semiconductors in optoelectronic devices. This is enabled by a state-of-the-art laser spectroscopy lab, including: femtosecond and nanosecond laser sources, three optical parametric amplifiers for pulse generation from the UV to mid-infrared, non-colinear optical parametric amplifiers (NOPAs) for ultrashort pulse generation (<10 fs), visible and mid-infrared transient absorption setups with the option for 3-pulse ‘pump-push-probe’ measurements, a quantum cascade laser (tuneable from 1900 – 750 cm-1), and an intensified CCD camera for transient photoluminescence measurements. Using this experimental infrastructure, they hope to link fundamental science of these materials to their applications, providing design rules for developing more efficient photovoltaic and LED technologies. Current research topics in the group include:

The photophysics of organic photovoltaics:

Understanding the material degradation mechanisms in organic photovoltaics:

Spin-triplet excited states in organic LEDs:

The fundamental physics of organic semiconductors:

See the full list of publications at .

News

Publications

2025

Alexander Gillett (2025) Joule, Vol. 9, Article 102008 (Article in journal)

2024

Antti鈥怭ekka M. Reponen, Giacomo Londi, Campbell S. B. Matthews, Yoann Olivier, Alexander S. Romanov, Neil C. Greenham, Alexander J. Gillett (2024) Angewandte Chemie International Edition, Vol. 63 (Article in journal)
Dongyang Chen, Junyi Gong, Jeannine Grüne, Tomas Matulaitis, Alexander J. Gillett, Xiao鈥怘ong Zhang, Ifor D.W. Samuel, Graham Alexander Turnbull, Eli Zysman鈥怌olman (2024) Advanced Functional Materials, Vol. 34, Article 2409592 (Article in journal)
Jeroen Royakkers, Hanbo Yang, Alexander J. Gillett, Flurin Eisner, Pratyush Ghosh, Daniel G. Congrave, Mohammed Azzouzi, Zahra Andaji-Garmaroudi, Anastasia Leventis, Akshay Rao, Jarvist Moore Frost, Jenny Nelson, Hugo Bronstein (2024) Nature Chemistry, Vol. 16, p. 1453-1461 (Article in journal)
Hwan-Hee Cho, Daniel G. Congrave, Alexander J. Gillett, Stephanie Montanaro, Haydn E. Francis, Víctor Riesgo-Gonzalez, Junzhi Ye, Rituparno Chowdury, Weixuan Zeng, Marc K. Etherington, Jeroen Royakkers, Oliver Millington, Andrew D. Bond, Felix Plasser, Jarvist M. Frost, Clare P. Grey, Akshay Rao, Richard H. Friend, Neil C. Greenham, Hugo Bronstein (2024) Nature Materials, Vol. 23, p. 519-526 (Article in journal)

Organisation