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Distinctive Spectroscopic Characteristics Observed in Colloidal Perovskite CsPbBr3 Quantum Dotopen access
- Authors
- Cho, Sangeun; Noh, Sam Kyu; Kim, Hyungsang; Im, Hyunsik
- Issue Date
- Jul-2021
- Publisher
- KOREAN VACUUM SOC
- Keywords
- Perovskite; CsPbBr3; Quantum dot; Time-resolved photoluminescence; Absorption; Fourier-transform infrared spectroscopy
- Citation
- APPLIED SCIENCE AND CONVERGENCE TECHNOLOGY, v.30, no.4, pp 107 - 110
- Pages
- 4
- Indexed
- SCOPUS
ESCI
KCI
- Journal Title
- APPLIED SCIENCE AND CONVERGENCE TECHNOLOGY
- Volume
- 30
- Number
- 4
- Start Page
- 107
- End Page
- 110
- ISSN
- 1225-8822
2288-6559
- Abstract
- Distinctive spectroscopic characteristics are observed in colloidal perovskite CsPbBr3 quantum dot (QD) dispersed in octane doped with PPO. As the content of CsPbBr3-QD increases, the emission and the absorption energies decrease due to QD-cluster formed in case of the inter-QD distance smaller than diameter of QD. Spectroscopic evidences supporting QD-cluster are found in the Urbach energy and the carrier lifetime. Unusual absorption lines showing explicit QD dependence are observed in Fourier-transform infrared spectra, which is explained by vibrational modes of bound PPO hybridized with CsPbBr3-QD.
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Related Researcher
- Cho, Sang Eun
- College of Advanced Convergence Engineering (Division of System Semiconductor)