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Bismuth-catalyzed synthesis of ZnO nanowires and their photoluminescence properties
- Authors
- Na, Han Gil; Yang, Ju Chan; Kwak, Dong Sub; Kim, Hyoun Woo
- Issue Date
- Jul-2012
- Publisher
- Elsevier
- Keywords
- ZnO; Bismuth; Nanowires; Photoluminescence
- Citation
- Ceramics International, v.38, no.5, pp 3659 - 3666
- Pages
- 8
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- Ceramics International
- Volume
- 38
- Number
- 5
- Start Page
- 3659
- End Page
- 3666
- ISSN
- 0272-8842
1873-3956
- Abstract
- By means of heating a mixture of Zn and Bi powders, we have successfully prepared ZnO nanowires. Since the produced nanowires correspond to the pure hexagonal ZnO phase with no catalytic nanoparticles being observed at the tips, the growth is dominated by the base-growth mechanism, in which Bi species at the bottom of the nanowires played a catalytic role. Photoluminescence (PL) analysis of indicated that the integrated intensity ratio of the 2.5 eV-band to the UV band increased with increased growth temperature. An increase of the Bi2O3 phase itself, Bi2O3 phase-induced oxygen vacancies, and an increase of oxygen vacancies in ZnO with increasing growth temperature were responsible for the intensification and the appearance of the 2.5 eV-band.
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Related Researcher
- Kim, Hyoun Woo
- COLLEGE OF ENGINEERING (SCHOOL OF MATERIALS SCIENCE AND ENGINEERING)