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Staff Record
Postgraduate Student

Thomas Keevers


Research Group(s): 

Research Interests: 

Organic semiconductors are a class of low cost materials suitable for a range of opto-electronic applications, including solar cells and organic light-emitting diodes. Although cheaper than competing approaches, they suffer from poor device efficiency which has hindered their wider integration. Contemporary research into charge transport and recombination has provided several insights into factors limiting device efficiency, and could provide further applications.

My research focuses on using spin resonance techniques to investigate the opto-electronic pathways of these materials. In particular, I use pulsed optically and electrically-detected magnetic resonance to probe the microscopic spin dynamics of thin film devices. Many organic materials show microsecond coherence times at room temperature, motivating the search for "quantum-enabled" technologies. 

Selected Publications: 

Keevers, T. L., & McCamey, D. R. (2015). Measuring Spin Relaxation with Standard Pulse Sequences in the Singlet-Triplet Basis. Journal of Magnetic Resonance 257 (2015): 70-78

Keevers, T. L., Baker, W.J., & McCamey D. R. (2015) Theory of exciton-polaron complexes in pulsed electrically detected magnetic resonance. Phys. Rev. B 91, 205206.

Baker, W.J., Keevers, T. L., Boehme, C. & McCamey D. R. (2015) Using coherent dynamics to quantify spin-coupling within triplet-exciton/polaron complexes in organic diodes. arXiv:1502.05471 (accepted in Phys. Rev. B)

Keevers, T. L., Danos, A., Schmidt, T. W., & McCamey, D. R. (2013). An agnostic approach. Nature nanotechnology, 8(12), 886-887.

Baker, W. J., Keevers, T. L., Lupton, J. M., McCamey, D. R., & Boehme, C. (2012). Slow hopping and spin dephasing of Coulombically bound polaron pairs in an organic semiconductor at room temperature. Physical review letters, 108(26), 267601.