Open AccessGuanidinium-Formamidinium Lead Iodide: A Layered Perovskite-Related Compound with Red Luminescence at Room Temperature
Author(s) -
Olga Nazarenko,
Martin Kotyrba,
Sergii Yakunin,
Marcel Aebli,
Gabriele Rainò,
Bogdan M. Benin,
Michael Wörle,
Maksym V. Kovalenko
Publication year - 2018
Publication title -
journal of the american chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 7.115
H-Index - 612
eISSN - 1520-5126
pISSN - 0002-7863
DOI - 10.1021/jacs.8b00194
Subject(s) - formamidinium , perovskite (structure) , chemistry , halide , iodide , luminescence , photoluminescence , quantum yield , photovoltaics , photochemistry , inorganic chemistry , optoelectronics , crystallography , materials science , optics , ecology , physics , photovoltaic system , biology , fluorescence
Two-dimensional hybrid organic-inorganic lead halides perovskite-type compounds have attracted immense scientific interest due to their remarkable optoelectronic properties and tailorable crystal structures. In this work, we present a new layered hybrid lead halide, namely [CH(NH 2 ) 2 ][C(NH 2 ) 3 ]PbI 4 , wherein puckered lead-iodide layers are separated by two small and stable organic cations: formamidinium, CH(NH 2 ) 2 + , and guanidinium, C(NH 2 ) 3 + . This perovskite is thermally stable up to 255 °C, exhibits room-temperature photoluminescence in the red region with a quantum yield of 3.5%, and is photoconductive. This study highlights a vast structural diversity that exists in the compositional space typically used in perovskite photovoltaics.
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