Nonlinear Photoluminescence from ZnO Nanobelts
-
Abstract
The nonlinear photoluminescence (PL) including second-harmonic generation (SHG) and the multiphoton luminescence (MPL) around 385nm and 530nm from ZnO nanobelts are investigated by using near-infrared excitations. The excitation wavelength dependence of MPL intensity reveals resonant energy transfer from SHG to MPL near the band gap excitation. The lifetime measurement of the MPL shows a much slower decay process of the defect emission, which results from the generation and recombination of both donors and acceptors on the disordered surface of the ZnO nanobelts.
Article Text
-
-
-
About This Article
Cite this article:
ZHOU Zhang-Kai, HAO Zhong-Hua, MEI Zong-Wei, WEN Xiao-Gang, YANG Shi-He. Nonlinear Photoluminescence from ZnO Nanobelts[J]. Chin. Phys. Lett., 2009, 26(2): 024201. DOI: 10.1088/0256-307X/26/2/024201
ZHOU Zhang-Kai, HAO Zhong-Hua, MEI Zong-Wei, WEN Xiao-Gang, YANG Shi-He. Nonlinear Photoluminescence from ZnO Nanobelts[J]. Chin. Phys. Lett., 2009, 26(2): 024201. DOI: 10.1088/0256-307X/26/2/024201
|
ZHOU Zhang-Kai, HAO Zhong-Hua, MEI Zong-Wei, WEN Xiao-Gang, YANG Shi-He. Nonlinear Photoluminescence from ZnO Nanobelts[J]. Chin. Phys. Lett., 2009, 26(2): 024201. DOI: 10.1088/0256-307X/26/2/024201
ZHOU Zhang-Kai, HAO Zhong-Hua, MEI Zong-Wei, WEN Xiao-Gang, YANG Shi-He. Nonlinear Photoluminescence from ZnO Nanobelts[J]. Chin. Phys. Lett., 2009, 26(2): 024201. DOI: 10.1088/0256-307X/26/2/024201
|