Microscopic Measurements of Hybrid Perovskite Solar Cells
Masaru Kuno a
a Radiation Laboratory, Department of Chemistry & Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, EE. UU., Notre Dame, United States
Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV19)
Roma, Italy, 2019 May 12th - 15th
Organizers: Prashant Kamat, Filippo De Angelis and Aldo Di Carlo
Invited Speaker, Masaru Kuno, presentation 037
DOI: https://doi.org/10.29363/nanoge.hopv.2019.037
Publication date: 11th February 2019

This talk will focus on recent efforts to conduct local, spatially-resolved absorption/emission microscopy measurements on hybrid perovskite thin films.  Motivating these studies is the recent discovery that organometal halide perovskites such as methylammonium lead iodide (MAPbI3) possess impressive power conversion efficiencies when used as active layers in thin film solar cells.  Despite impressive performance gains realized in perovskite photovoltaics, much remains to be understood about their fundamental photophysics.  To illustrate, little is known about the role of compositional and/or morphological disorder in the optical and electrical response of these materials.  Additionally, effects such as light- and bias-induced anion and cation phase segregation as well as migration are known to alter the optical response of perovskite solar cells.  Consequently, a need exists for detailed microscopic studies of basic hybrid perovskite photophysics as well as spatially-resolved measurements to clarify their disorder-induced optical heterogeneities.  More recent work focuses on infrared imaging of cation migration in these materials.

US DOE (Award DE-SC0014334 )

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