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

Indian Journal of Pure & Applied Physics

article

K Sowri Babu¹  P Sanguino²  R Schwarz²  L Santos³  S Alves³  A Fedorov³ 

[1] Vignan’s Foundation for Science Technology and Research ,(Deemed to be) University;Departamento de Física and CeFEMA, Institute Superior Técnico;Department of Chemical Engineering and CQE, Institute Superior Técnico

关键词: ZnO nanorods;    Photoluminescence;    Defects;    Semiconductor nanostructures;    Article;   

来源: National Institute of Science Communication and Information Resources

【 摘 要 】

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.

【 授权许可】

Unknown