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I am a PhD candidate in computational condensed matter physics, looking into charge transport properties in polymer thin films, with applications in organic solar cells. My work is under the supervision of Dr Theodoros Papadopoulos and Prof Alison Walker, and is funded by a joint URSA studentship between the University of Chester and the University of Bath.

Before joining the CCMN group, I worked as an experimental physicist developing polymers for OLED and OPV devices for academic and industrial use. I worked respectively for the Lab for Thin Films and Nanotechnology (LTFN), Aristotle University, Greece, and Organic Electronic Technologies (OET), Greece. During my past research, I have become familiar with the advantages and challenges related to the characterisation and fabrication of organic optoelectronic devices, and developed an interest in exploring the potential and limitations of polymer materials. My work on the optical properties of emitting polymers, as investigated by NIR-Vis-far UV spectroscopic ellipsometry, was published in Phys. Status Solidi A 213, 2947 (2016).

Research:

My research is relevant to device modelling of organic optoelectronics applications, such as organic light emitting diodes (OLEDs), and organic photovoltaics (OPVs). The main aim of my work is related to the prediction of charge transport properties in single polymer chains, and the investigation of the effect of dynamic and static disorder on temperature-dependent charge mobility. The methodology I use is based on a Su-Schrieffer-Heeger (SSH) Hamiltonian, according to work by Troisi, Adv. Mater. 19, 2000 (2007), parameterised via Density Functional Theory (DFT). Electron-phonon interactions are taken into account via the so-called Peierls and Holstein couplings. Molecular dynamics and a kinetic Monte Carlo scheme will also be considered in the future. High Performance Computing (HPC) facilities are provided by the University of Bath and the University of Chester.

Published work:

M. Gioti, D. Kokkinos, C. I. Chaidou, A. Laskarakis, A. K. Andreopoulou, J. K. Kallitsis, S. Logothetidis, A comprehensive study of the optical properties of emitting polymers for efficient flexible OLED devices, Phys. Status Solidi A 213, 2947 (2016).

Qualifications:

BSc and MSc in Physics from Aristotle University, Greece.