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cond-mat.mtrl-sci2026
Unifying Low-Frequency Raman and Infrared Signatures across Perovskites
Ethan Berger, Erik Fransson, Apinya Ngoipala +5
Perovskites have been studied for a wide range of applications, from oxide-based ferroelectrics to halide-perovskite photovoltaics. Despite their diverse functionalities, these mat…
cond-mat.mtrl-sci2026
Anomalous polar chains in halide perovskites
Erik Fransson, Apinya Ngoipala, Priyanka Deswal +4
Local polar distortions, their collective ordering, and their field-driven reversal have been studied extensively in ferroelectric perovskites for decades. Here we identify an unus…
cond-mat.mtrl-sci2023
Substitution of Lead with Tin Suppresses Ionic Transport in Halide Perovskite Optoelectronics
Krishanu Dey, Dibyajyoti Ghosh, Matthew Pilot +7
Despite the rapid rise in the performance of a variety of perovskite optoelectronic devices with vertical charge transport, the effects of ion migration remain a common and longsta…