K
Kyle Frohna
Researcher at University of Cambridge
Publications - 47
Citations - 1558
Kyle Frohna is an academic researcher from University of Cambridge. The author has contributed to research in topics: Perovskite (structure) & Chemistry. The author has an hindex of 11, co-authored 27 publications receiving 816 citations. Previous affiliations of Kyle Frohna include Trinity College, Dublin & California Institute of Technology.
Papers
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Journal ArticleDOI
Compositional Engineering for Efficient Wide Band Gap Perovskites with Improved Stability to Photoinduced Phase Segregation
Kevin A. Bush,Kyle Frohna,Kyle Frohna,Rohit Prasanna,Rachel E. Beal,Tomas Leijtens,Simon A. Swifter,Michael D. McGehee +7 more
TL;DR: In this paper, the authors investigate the performance and photostability of metal halide perovskites across a compositional space of formamidinium (FA) and cesium (Cs) at the A-site at various halide compositions.
Journal ArticleDOI
Inversion symmetry and bulk Rashba effect in methylammonium lead iodide perovskite single crystals.
Kyle Frohna,Kyle Frohna,Tejas Deshpande,John Harter,Wei Peng,Bradford Barker,Bradford Barker,Jeffrey B. Neaton,Jeffrey B. Neaton,Steven G. Louie,Steven G. Louie,Osman M. Bakr,David Hsieh,Marco Bernardi +13 more
TL;DR: Second harmonic generation rotational anisotropy measurements on MAPbI3 crystals are demonstrated to show methylammonium lead iodide perovskite is centrosymmetric, invalidating previous predictions of a large bulk Rashba effect.
Journal ArticleDOI
Minimizing Current and Voltage Losses to Reach 25% Efficient Monolithic Two-Terminal Perovskite–Silicon Tandem Solar Cells
Kevin A. Bush,Salman Manzoor,Kyle Frohna,Kyle Frohna,Zhengshan J. Yu,James A. Raiford,Axel F. Palmstrom,Hsin-Ping Wang,Rohit Prasanna,Stacey F. Bent,Zachary C. Holman,Michael D. McGehee,Michael D. McGehee +12 more
TL;DR: In this paper, a perovskite-silicon monolithic two-stage tandems with metal-halide perivskites has been demonstrated for use in Tandems on silicon.
Journal ArticleDOI
Charge-Carrier Recombination in Halide Perovskites
Dane W. deQuilettes,Dane W. deQuilettes,Kyle Frohna,David Emin,Thomas Kirchartz,Thomas Kirchartz,Vladimir Bulovic,David S. Ginger,Samuel D. Stranks +8 more
TL;DR: A critical assessment of the factors most likely controlling recombination in the most widely studied halide perovskite systems concludes that multiple trapping or hopping in shallow trap states, and the possible indirect nature of the bandgap, seem to be less likely, at least in high-quality samples most relevant to solar cells and light-emitting diodes.
Journal ArticleDOI
Photodoping through local charge carrier accumulation in alloyed hybrid perovskites for highly efficient luminescence
Sascha Feldmann,Stuart Macpherson,Satyaprasad P. Senanayak,Satyaprasad P. Senanayak,Mojtaba Abdi-Jalebi,Jasmine P. H. Rivett,Guangjun Nan,Gregory Tainter,Tiarnan Doherty,Kyle Frohna,Emilie Ringe,Richard H. Friend,Henning Sirringhaus,Michael Saliba,David Beljonne,Samuel D. Stranks,Felix Deschler,Felix Deschler +17 more
TL;DR: In this paper, the charge carrier recombination regime changes from second to first order within the first tens of nanoseconds after excitation, supported by microscale mapping of the optical bandgap, electrically gated transport measurements and first-principles calculations.