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

4 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 Jan 1

Keywords

Perovskite CsPbBr
Photoluminescence
Surface ligand

ASJC Scopus subject areas

Chemistry(all)

Access to Document

10.1246/cl.180998_rfseq1

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Kosugi, T., Iso, Y., & Isobe, T. (2019). Effects of oleic acid on the stability of perovskite CsPbBr ₃ quantum dot dispersions Chemistry Letters, 48(4), 349-352. https://doi.org/10.1246/cl.180998_rfseq1

Effects of oleic acid on the stability of perovskite CsPbBr ₃ quantum dot dispersions . / Kosugi, Takuma; Iso, Yoshiki ; Isobe, Tetsuhiko.

In: Chemistry Letters, Vol. 48, No. 4, 01.01.2019, p. 349-352.

Research output: Contribution to journal › Article

Kosugi, T, Iso, Y & Isobe, T 2019, ' Effects of oleic acid on the stability of perovskite CsPbBr ₃ quantum dot dispersions ', Chemistry Letters, vol. 48, no. 4, pp. 349-352. https://doi.org/10.1246/cl.180998_rfseq1

Kosugi T, Iso Y , Isobe T. Effects of oleic acid on the stability of perovskite CsPbBr ₃ quantum dot dispersions Chemistry Letters. 2019 Jan 1;48(4):349-352. https://doi.org/10.1246/cl.180998_rfseq1

Kosugi, Takuma ; Iso, Yoshiki ; Isobe, Tetsuhiko. / Effects of oleic acid on the stability of perovskite CsPbBr ₃ quantum dot dispersions In: Chemistry Letters. 2019 ; Vol. 48, No. 4. pp. 349-352.

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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. ",

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