Effects of oleic acid on the stability of perovskite CsPbBr3 quantum dot dispersions

Takuma Kosugi; Yoshiki Iso; Tetsuhiko Isobe

doi:10.1246/cl.180998

Effects of oleic acid on the stability of perovskite CsPbBr₃ quantum dot dispersions

Takuma Kosugi, Yoshiki Iso, Tetsuhiko Isobe

Department of Applied Chemistry

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

14 Citations (Scopus)

Abstract

We investigated the effects of addition of oleic acid (OA) on the stability of CsPbBr₃ quantum dot (QD) dispersions in toluene during storage and light irradiation. Excess amounts of OA degraded the fluorescent perovskite CsPbBr₃ 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 CsPbBr₃ 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
Publication status	Published - 2019

Keywords

Perovskite CsPbBr
Photoluminescence
Surface ligand

ASJC Scopus subject areas

Chemistry(all)

Access to Document

10.1246/cl.180998

Cite this

@article{548e8fd9ad35486e9f1dc7d5df546af4,

title = "Effects of oleic acid on the stability of perovskite CsPbBr3 quantum dot dispersions",

abstract = "We investigated the effects of addition of oleic acid (OA) on the stability of CsPbBr3 quantum dot (QD) dispersions in toluene during storage and light irradiation. Excess amounts of OA degraded the fluorescent perovskite CsPbBr3 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 CsPbBr3 crystal surface after the photoinduced desorption of OA.",

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

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

note = "Publisher Copyright: {\textcopyright} 2019 The Chemical Society of Japan.",

year = "2019",

doi = "10.1246/cl.180998",

language = "English",

volume = "48",

pages = "349--352",

journal = "Chemistry Letters",

issn = "0366-7022",

publisher = "Chemical Society of Japan",

number = "4",

}

TY - JOUR

T1 - Effects of oleic acid on the stability of perovskite CsPbBr3 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 CsPbBr3 quantum dot (QD) dispersions in toluene during storage and light irradiation. Excess amounts of OA degraded the fluorescent perovskite CsPbBr3 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 CsPbBr3 crystal surface after the photoinduced desorption of OA.

AB - We investigated the effects of addition of oleic acid (OA) on the stability of CsPbBr3 quantum dot (QD) dispersions in toluene during storage and light irradiation. Excess amounts of OA degraded the fluorescent perovskite CsPbBr3 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 CsPbBr3 crystal surface after the photoinduced desorption of OA.

KW - Perovskite CsPbBr

KW - Photoluminescence

KW - Surface ligand

UR - http://www.scopus.com/inward/record.url?scp=85065609193&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85065609193&partnerID=8YFLogxK

U2 - 10.1246/cl.180998

DO - 10.1246/cl.180998

M3 - Article

AN - SCOPUS:85065609193

SN - 0366-7022

VL - 48

SP - 349

EP - 352

JO - Chemistry Letters

JF - Chemistry Letters

IS - 4

ER -