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Water‐Induced and Wavelength‐Dependent Light Absorption and Emission Dynamics in Triple‐Cation Halide Perovskites (Advanced Optical Materials 18/2021)
Author(s) -
Howard John M.,
Palm Kevin J.,
Wang Qiong,
Lee Erica,
Abate Antonio,
Munday Jeremy N.,
Leite Marina S.
Publication year - 2021
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.202170069
Subject(s) - materials science , photoluminescence , halide , perovskite (structure) , molar absorptivity , absorption (acoustics) , extinction (optical mineralogy) , wavelength , relative humidity , attenuation coefficient , optoelectronics , optics , inorganic chemistry , chemistry , thermodynamics , physics , composite material , crystallography
Marina S. Leite and co‐workers (article number 2100710) unveil the relationship between light absorption, charge carrier radiative recombination, and relative humidity (rH) for the Cs 0.05 FA 0.79 MA 0.16 Pb(I 0.83 Br 0.17 ) 3 halide perovskite. Through environmental ellipsometry and photoluminescence they determine partially reversible reductions in the extinction coefficient and fully reversible 25x enhancements in absolute light emission across the same humidity cycles up to 70% rH. These in situ measurements could be leveraged to quantify the effect of other stressors on perovskites' optical behavior.