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Facile and controllable preparation of tellurium nanocrystals by laser irradiationopen access
- Authors
- Duc Anh Nguyen; Park, Dae Young; Jeong, Byeong Geun; Thi Uyen Tran; Im, Hyunsik; Jeong, Mun Seok
- Issue Date
- Apr-2022
- Publisher
- Elsevier BV
- Keywords
- Laser irradiation; Tellurene; Nanocrystals; Photoluminescence; Quantum confinement
- Citation
- Applied Surface Science, v.581, pp 1 - 8
- Pages
- 8
- Indexed
- SCIE
SCOPUS
- Journal Title
- Applied Surface Science
- Volume
- 581
- Start Page
- 1
- End Page
- 8
- ISSN
- 0169-4332
1873-5584
- Abstract
- We report a facile and controllable method for fabricating Te nanocrystals (NCs) with tunable photoluminescence from hydrothermally grown Te thin flakes using laser irradiation. The formation of Te NCs is attributed to the vaporization of Te caused by local heat from the laser and rapid recrystallization on the substrate. Moreover, the size of the Te NCs can be tuned according to the heat distribution around the laser spot; thus, photoluminescence covering a broad visible spectrum is observed by the quantum size effect. Our work provides a new strategy to synthesize Te NCs as visible-light absorbers or emitters for integrated optoelectronic and photonic nanodevices.
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