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Beyond the Bandgap Photoluminescence of Colloidal Semiconductor Nanocrystals

Authors
Bera, RajeshKim, GahyeonChoi, DongsunKim, JihyeJeong, Kwang Seob
Issue Date
18-3월-2021
Publisher
AMER CHEMICAL SOC
Citation
JOURNAL OF PHYSICAL CHEMISTRY LETTERS, v.12, no.10, pp.2562 - 2569
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume
12
Number
10
Start Page
2562
End Page
2569
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/128402
DOI
10.1021/acs.jpclett.1c00142
ISSN
1948-7185
Abstract
Intraband transitions of colloidal semiconductor nanocrystals, or the electronic transitions occurring in either the conduction band or valence band, have recently received considerable attention because utilizing the intraband transitions provides new approaches for applications such as photodetectors, imaging, solar cells, lasers, and so on. In the past few years, it has been revealed that observing the intraband transition is not limited for temporal measurement such as ultrafast spectroscopy but available for steady-state measurement even under ambient conditions with the help of self-doped semiconductor nanocrystals. Considering the large absorption coefficient of the steady-state intraband transition comparable to that of the bandgap transition, the use of the intraband transition will be promising for both fundamental and application studies. Here, we summarize the recent progress in studies on intraband photoluminescence of self-doped semiconductor nanocrystals and discuss key questions to be addressed in future research.
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