Effects of oleic acid on the stability of perovskite CsPbBr                         3                          quantum dot dispersions

Takuma Kosugi; Yoshiki Iso; Tetsuhiko Isobe

doi:10.1246/cl.180998_rfseq1

Effects of oleic acid on the stability of perovskite CsPbBr ₃ quantum dot dispersions

Takuma Kosugi, Yoshiki Iso, Tetsuhiko Isobe

Department of Applied Chemistry

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

10 Citations (Scopus)

Abstract

We investigated the effects of addition of oleic acid (OA) on the stability of CsPbBr ₃ quantum dot (QD) dispersions in toluene during storage and light irradiation. Excess amounts of OA degraded the fluorescent perovskite CsPbBr ₃ QDs because of promoted crystal growth through dissolution and reprecipitation. In contrast, a suitable amount of OA (0.2 vol%) improved their photostability possibly due to re-adsorption of OA on the exposed CsPbBr ₃ crystal surface after the photoinduced desorption of OA.

Original language	English
Pages (from-to)	349-352
Number of pages	4
Journal	Chemistry Letters
Volume	48
Issue number	4
DOIs	https://doi.org/10.1246/cl.180998_rfseq1
Publication status	Published - 2019

Keywords

Perovskite CsPbBr
Photoluminescence
Surface ligand

ASJC Scopus subject areas

Chemistry(all)

Access to Document

10.1246/cl.180998_rfseq1

Cite this

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title = " Effects of oleic acid on the stability of perovskite CsPbBr 3 quantum dot dispersions ",

abstract = " We investigated the effects of addition of oleic acid (OA) on the stability of CsPbBr 3 quantum dot (QD) dispersions in toluene during storage and light irradiation. Excess amounts of OA degraded the fluorescent perovskite CsPbBr 3 QDs because of promoted crystal growth through dissolution and reprecipitation. In contrast, a suitable amount of OA (0.2 vol%) improved their photostability possibly due to re-adsorption of OA on the exposed CsPbBr 3 crystal surface after the photoinduced desorption of OA. ",

keywords = "Perovskite CsPbBr, Photoluminescence, Surface ligand",

author = "Takuma Kosugi and Yoshiki Iso and Tetsuhiko Isobe",

year = "2019",

doi = "10.1246/cl.180998_rfseq1",

language = "English",

volume = "48",

pages = "349--352",

journal = "Chemistry Letters",

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publisher = "Chemical Society of Japan",

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T1 - Effects of oleic acid on the stability of perovskite CsPbBr 3 quantum dot dispersions

AU - Kosugi, Takuma

AU - Iso, Yoshiki

AU - Isobe, Tetsuhiko

PY - 2019

Y1 - 2019

N2 - We investigated the effects of addition of oleic acid (OA) on the stability of CsPbBr 3 quantum dot (QD) dispersions in toluene during storage and light irradiation. Excess amounts of OA degraded the fluorescent perovskite CsPbBr 3 QDs because of promoted crystal growth through dissolution and reprecipitation. In contrast, a suitable amount of OA (0.2 vol%) improved their photostability possibly due to re-adsorption of OA on the exposed CsPbBr 3 crystal surface after the photoinduced desorption of OA.

AB - We investigated the effects of addition of oleic acid (OA) on the stability of CsPbBr 3 quantum dot (QD) dispersions in toluene during storage and light irradiation. Excess amounts of OA degraded the fluorescent perovskite CsPbBr 3 QDs because of promoted crystal growth through dissolution and reprecipitation. In contrast, a suitable amount of OA (0.2 vol%) improved their photostability possibly due to re-adsorption of OA on the exposed CsPbBr 3 crystal surface after the photoinduced desorption of OA.

KW - Perovskite CsPbBr

KW - Photoluminescence

KW - Surface ligand

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SP - 349

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JO - Chemistry Letters

JF - Chemistry Letters

SN - 0366-7022

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ER -