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Ferroelectric Materials for Solar Energy Conversion: Photoferroics Revisited
Keith T. Butler, Jarvist M. Frost, Aron Walsh
The application of ferroelectric materials (i.e. solids that exhibit spontaneous electric polarisation) in solar cells has a long and controversial history. This includes the first…
Self-regulation mechanism for charged point defects in hybrid halide perovskites
Aron Walsh, David O. Scanlon, Shiyou Chen +2
Hybrid halide perovskites such as methylammonium lead iodide (CH3NH3PbI3) exhibit unusually low free carrier concentrations despite being processed at low-temperatures from solutio…
Stacking-dependent energetics and electronic structure of ultrathin polymorphic VVI topological insulator nanofilms
Can Li, Torben Winzer, Aron Walsh +3
Topological insulators represent a paradigm shift in surface physics. The most extensively studied BiSe-type topological insulators exhibit layered structures, wherein neig…
Thermal physics of the lead chalcogenides PbS, PbSe, and PbTe from first principles
Jonathan Michael Skelton, Stephen C. Parker, Atsushi Togo +2
The lead chalcogenides represent an important family of functional materials, in particular due to the benchmark high-temperature thermoelectric performance of PbTe. A number of re…
Ab initio thermodynamic model of CuZnSnS
Adam J. Jackson, Aron Walsh
Thin-film solar cells based on the semiconductor CuZnSnS (CZTS) are a promising candidate for Terawatt-scale renewable energy generation. While CZTS is composed of earth ab…
Atomistic origins of high-performance in hybrid halide perovskite solar cells
Jarvist M. Frost, Keith T. Butler, Federico Brivio +3
The performance of organometallic perovskite solar cells has rapidly surpassed that of both conventional dye-sensitised and organic photovoltaics. High power conversion efficiency…