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 .