Tunable Wide‐Bandgap Monohalide Perovskites

Tunable Wide‐Bandgap Monohalide Perovskites

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Tunable Wide‐Bandgap Monohalide Perovskites

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El Ajjouri, Yousra; Igual-Muñoz, Ana M.; Sessolo, Michele Perfil; Palazón Huet, Francisco; Bolink, Henk Perfil
This document is a artículoDate2020
Herein the mechanochemical synthesis of inorganic as well as hybrid organic-inorganic monohalide perovskites with tunable bandgaps is reported. It is shown that the bandgap bowing known for iodide mixed Sn-Pb perovskites is also present in the pure bromide analogous. This results in technologically very interesting materials with bandgaps in the range of 1.7-1.9 eV. Similar bandgap perovskites are typically achieved by mixing two halides that are prone to segregate over time. This limits the achievable open circuit voltage. For monohalide perovskites this problem is eliminated, making these materials especially promising wide bandgap absorbers for tandem solar cells.

    Y. El Ajjouri, A. M. Igual-Muñoz, M. Sessolo, F. Palazon, and H. J. Bolink Tunable Wide‐Bandgap Monohalide Perovskites Adv. Opt. Mater., 8, 2000423 (2020)

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