Enhanced and stabilized photoluminescence of perovskite cesium lead bromide nanocubes through ordered assemblies

Moeka Sasaki; Shota Hashimoto; Yoshiki Iso; Yuya Oaki; Tetsuhiko Isobe; Hiroaki Imai

doi:10.1039/d2na00784c

Enhanced and stabilized photoluminescence of perovskite cesium lead bromide nanocubes through ordered assemblies

Moeka Sasaki, Shota Hashimoto, Yoshiki Iso, Yuya Oaki, Tetsuhiko Isobe, Hiroaki Imai

Department of Applied Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

This work clarified the effects of self-assembly of perovskite cesium lead bromide (CsPbBr₃) nanocubes (NCs) covered with didodecyldimethyl ammonium bromide (DDAB) on photoluminescence (PL) properties. Although the PL intensity of isolated NCs was weakened in the solid state even under inert conditions, the quantum yield of PL (PLQY) and the photostability of DDAB-covered NCs were drastically improved by the formation of two-dimensional (2D) ordered arrays on a substrate. The PLQY of the 2D arrays increased to ca. 60% by initial excitation illumination at 468 nm and was maintained for over 4000 h. The improved PL properties are attributable to the fixation of the surface ligand around the NCs in the specific ordered arrays.

Original language	English
Pages (from-to)	2553-2557
Number of pages	5
Journal	Nanoscale Advances
Volume	5
Issue number	9
DOIs	https://doi.org/10.1039/d2na00784c
Publication status	Published - 2023 Apr 3

ASJC Scopus subject areas

Bioengineering
Atomic and Molecular Physics, and Optics
Chemistry(all)
Materials Science(all)
Engineering(all)

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title = "Enhanced and stabilized photoluminescence of perovskite cesium lead bromide nanocubes through ordered assemblies",

abstract = "This work clarified the effects of self-assembly of perovskite cesium lead bromide (CsPbBr3) nanocubes (NCs) covered with didodecyldimethyl ammonium bromide (DDAB) on photoluminescence (PL) properties. Although the PL intensity of isolated NCs was weakened in the solid state even under inert conditions, the quantum yield of PL (PLQY) and the photostability of DDAB-covered NCs were drastically improved by the formation of two-dimensional (2D) ordered arrays on a substrate. The PLQY of the 2D arrays increased to ca. 60% by initial excitation illumination at 468 nm and was maintained for over 4000 h. The improved PL properties are attributable to the fixation of the surface ligand around the NCs in the specific ordered arrays.",

author = "Moeka Sasaki and Shota Hashimoto and Yoshiki Iso and Yuya Oaki and Tetsuhiko Isobe and Hiroaki Imai",

note = "Funding Information: This work was supported by JSPS KAKENHI grant number JP21H01627. Publisher Copyright: {\textcopyright} 2023 The Author(s).",

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T1 - Enhanced and stabilized photoluminescence of perovskite cesium lead bromide nanocubes through ordered assemblies

AU - Sasaki, Moeka

AU - Hashimoto, Shota

AU - Iso, Yoshiki

AU - Oaki, Yuya

AU - Isobe, Tetsuhiko

AU - Imai, Hiroaki

PY - 2023/4/3

Y1 - 2023/4/3

N2 - This work clarified the effects of self-assembly of perovskite cesium lead bromide (CsPbBr3) nanocubes (NCs) covered with didodecyldimethyl ammonium bromide (DDAB) on photoluminescence (PL) properties. Although the PL intensity of isolated NCs was weakened in the solid state even under inert conditions, the quantum yield of PL (PLQY) and the photostability of DDAB-covered NCs were drastically improved by the formation of two-dimensional (2D) ordered arrays on a substrate. The PLQY of the 2D arrays increased to ca. 60% by initial excitation illumination at 468 nm and was maintained for over 4000 h. The improved PL properties are attributable to the fixation of the surface ligand around the NCs in the specific ordered arrays.

AB - This work clarified the effects of self-assembly of perovskite cesium lead bromide (CsPbBr3) nanocubes (NCs) covered with didodecyldimethyl ammonium bromide (DDAB) on photoluminescence (PL) properties. Although the PL intensity of isolated NCs was weakened in the solid state even under inert conditions, the quantum yield of PL (PLQY) and the photostability of DDAB-covered NCs were drastically improved by the formation of two-dimensional (2D) ordered arrays on a substrate. The PLQY of the 2D arrays increased to ca. 60% by initial excitation illumination at 468 nm and was maintained for over 4000 h. The improved PL properties are attributable to the fixation of the surface ligand around the NCs in the specific ordered arrays.

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JO - Nanoscale Advances

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Enhanced and stabilized photoluminescence of perovskite cesium lead bromide nanocubes through ordered assemblies

Abstract

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