Green luminescence from Cu-doped ZnO nanorods: Role of Zn vacancies and negative thermal quenching

Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.4798240

Title:	Green luminescence from Cu-doped ZnO nanorods: Role of Zn vacancies and negative thermal quenching
Authors:	Huang, X.H. Zhang, C. Tay, C.B. Venkatesan, T. Chua, S.J.
Issue Date:	18-Mar-2013
Citation:	Huang, X.H., Zhang, C., Tay, C.B., Venkatesan, T., Chua, S.J. (2013-03-18). Green luminescence from Cu-doped ZnO nanorods: Role of Zn vacancies and negative thermal quenching. Applied Physics Letters 102 (11) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.4798240
Abstract:	Bright and stable structured green luminescence (GL) is achieved from solution-grown Cu-doped ZnO nanorods. Dependence of photoluminescence on the annealing parameters reveals that GL is correlated with creation of Zn vacancies (VZn) and then formation of Cu dopants at Zn sites (Cu Zn). High internal quantum efficiency (43) of the GL can be sustained up to 240 K due to negative thermal quenching. In contrast to the poor stability of defects-related visible emission, the structured GL shows good stability with respect to sample heating. Cu-doped ZnO nanorods with strong and stable GL have potential applications in visible light display and lighting. © 2013 American Institute of Physics.
Source Title:	Applied Physics Letters
URI:	http://scholarbank.nus.edu.sg/handle/10635/82429
ISSN:	00036951
DOI:	10.1063/1.4798240
Appears in Collections:	Staff Publications

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