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Orange Photoluminescence from Hydrothermally Grown Zno Nanorods and Study on its Defects

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Title Orange Photoluminescence from Hydrothermally Grown Zno Nanorods and Study on its Defects
 
Creator Babu, K Sowri
Sanguino, P
Schwarz, R
Santos, L
Alves, S
Fedorov, A
 
Subject ZnO nanorods
Photoluminescence
Defects
Semiconductor nanostructures
 
Description 462-467
The visible photoluminescence (PL) of ZnO is controversial for a long time. At present, the contribution of oxygen interstitial defects to yellow/orange emission from ZnO nanostructures is on debate. In this report, the origin of orange emission from solution- grown ZnO nanorods is investigated using excitation wavelength dependent photoluminescence PL, PL excitation and UV-Vis spectra. These results showed that orange emission may be due to the transition of an electron from shallow defect levels positioned slightly below the conduction band to the singly ionized oxygen vacancies. Hence, it is believed that oxygen interstitials may not be responsible for orange emission from solution grown ZnO nanostructures.
 
Date 2021-07-16T10:22:10Z
2021-07-16T10:22:10Z
2021-06
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscair.res.in/handle/123456789/57717
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJPAP Vol.59(06) [June 2021]