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Organo-metallic hybrid perovskites have recently (re)-emerged as a class of materials possessing properties which are, by many-metrics, extraordinary. Not only has the peak reported photovoltaic (PV) cell power conversion efficiency increased at an unprecedented rate; to a value now in excess of that of polycrystalline silicon, but these are compounds processable from solution, at low-temperature (< 100°C), and from inexpensive precursor materials. Despite the progress made in PVs (and to a lesser extent, light-emitting diodes) over the last few years, there has been a notable absence of thin-film transistors (TFTs) based on these compounds in the literature. This is surprising because these compounds possess high charge-carrier mobilities (~100 cm2/Vs), easily-accessible valence and conduction bands, and have clear potential applications in low-cost opto-electronics. In this talk I describe how to develop electronics from these compounds and outline a roadmap for low-cost flexible electronics based on this new class of materials.
Biography: John was born in Bath, United Kingdom, and received his undergraduate degree in Physics from the University of Warwick in 2008 and his PhD in Physics from Imperial College London in 2011. After his PhD John took a 2-year break from academia and worked for The Royal Bank of Scotland as a currency-options trader. In 2013 John returned to Imperial College London for a 1 year postdoctoral appointment, before joining the University of California, Santa Barbara as an Elings Fellow in November 2014. Since September 2017 John has been an Assistant Professor in the School of Electrical Engineering and Computer Science at Oregon State University.