Silver chalcohalide antiperovskites show a record 20 to 60 percent temperature-driven band-gap reduction caused by low-energy polar phonons, bringing computed gaps close to measured values.
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Giant Electron-Phonon Coupling Induced Band-Gap Renormalization in Anharmonic Silver Chalcohalide Antiperovskites
Silver chalcohalide antiperovskites show a record 20 to 60 percent temperature-driven band-gap reduction caused by low-energy polar phonons, bringing computed gaps close to measured values.