Speaker Deck

2016-06-07_ETSF-YRM Disorder in semiconductors for photovoltaics

by Jarvist Moore Frost

Published June 7, 2016 in Science

Presented at the 2016 European Theoretical Spectroscopy Facility (ETSF) Young Researcher Meeting (YRM), on the 7th June 2016 at King's College London.

The meeting was really nice - quite a different dynamic with all the permanent contract academic (i.e. PIs) barred.
I had twice as many slides as I could fit into my 20 minute talk, so I skipped Case Studies III and IV when I presented.

Conference website:-

Title: Disorder in Semiconductors for Photovoltaics
Authors : Jarvist Moore Frost, Suzanne Wallace, Federico Brivio, Jonathan Skelton, Beth Rice, Jenny Nelson, Aron Walsh
Affiliations : University of Bath, United Kingdom
Terawatt scale photovoltaics requires new semiconductors. Disorder will be pervasive. The low-energy and reduced-time synthesis, necessary to make a cheap material, are required by statistical physics to also make a disordered material.

Disorder poses a severe challenge for electronic structure theory. Emergent and statistical behaviour dominate device operation. The length and time scales preclude direct atomistic treatment of the system. Instead we are forced to attack the problem through model building - to carefully choose which aspect of the system to model explicitly, and to write custom codes that allow the evaluation of some experimentally relevant metric.

In this talk I will discuss some approaches to treating this disorder with computational methods. As case studies I will discuss work with a thin film photovoltaic material (Copper Zinc Tin Sulphide, CZTS), organic solar cells and hybrid halide perovskites.