Colloidal Organometal Halide Perovskite (MAPbBrxI3−x, 0≤x≤3) Quantum Dots: Controllable Synthesis and Tunable Photoluminescence

Organic-inorganic perovskite materials, typically methylammonium lead trihalide (MAPbX 3 : MA = methylammonium; X = Br, I), are recently attract enormous attention for their distinguished photo-electronic properties. The control of morphology, composition and dispersability of MAPbX 3 perovskite nan...

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Published in:Scientific reports 2016-10, Vol.6 (1), p.35931-35931, Article 35931
Main Authors: Zhao, Ying, Xu, Xiangxing, You, Xiaozeng
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639/301
639/638
Crystals
Humanities and Social Sciences
Lead
Luminescence
multidisciplinary
Nanocrystals
Photons
Quantum dots
Recombination
Science
Temperature effects
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description Organic-inorganic perovskite materials, typically methylammonium lead trihalide (MAPbX 3 : MA = methylammonium; X = Br, I), are recently attract enormous attention for their distinguished photo-electronic properties. The control of morphology, composition and dispersability of MAPbX 3 perovskite nanocrystals is crucial for the property tailoring and still a major challenge. Here we report the synthesis of colloidal MAPbBr x I 3−x (0 ≤ x ≤ 3) nanocrystals at room temperature by using alkyl carboxylate as capping ligands. These nanocrystals exhibit continuously tunable UV-vis absorption and photoluminescence (PL) across the visible spectrum, which is attributed to the quantum confinement effect with certain stoichiometry. Their unique exciton recombination dynamics was investigated and discussed.
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subjects 639/301
639/638
Crystals
Humanities and Social Sciences
Lead
Luminescence
multidisciplinary
Nanocrystals
Photons
Quantum dots
Recombination
Science
Temperature effects
title Colloidal Organometal Halide Perovskite (MAPbBrxI3−x, 0≤x≤3) Quantum Dots: Controllable Synthesis and Tunable Photoluminescence
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