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 |
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Pages (from-to) | 349-352 |
Number of pages | 4 |
Journal | Chemistry Letters |
Volume | 48 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2019 Jan 1 |
Keywords
- Perovskite CsPbBr
- Photoluminescence
- Surface ligand
ASJC Scopus subject areas
- Chemistry(all)