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- Title
Enhancement of Photoluminescence Quantum Yield and Stability in CsPbBr3 Perovskite Quantum Dots by Trivalent Doping.
- Authors
Jung, Sujeong; Kim, Jae Ho; Choi, Jin Woo; Kang, Jae-Wook; Jin, Sung-Ho; Kang, Youngho; Song, Myungkwan
- Abstract
We determine the influence of substitutional defects on perovskite quantum dots through experimental and theoretical investigations. Substitutional defects were introduced by trivalent dopants (In, Sb, and Bi) in CsPbBr3 by ligand-assisted reprecipitation. We show that the photoluminescence (PL) emission peak shifts toward shorter wavelengths when doping concentrations are increased. Trivalent metal-doped CsPbBr3 enhanced the PL quantum yield (~10%) and air stability (over 10 days). Our findings provide new insights into the influence of substitutional defects on substituted CsPbBr3 that underpin their physical properties.
- Subjects
QUANTUM dot synthesis; PEROVSKITE; PHOTOLUMINESCENCE
- Publication
Nanomaterials (2079-4991), 2020, Vol 10, Issue 4, p710
- ISSN
2079-4991
- Publication type
Article
- DOI
10.3390/nano10040710