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Title: Investigation of structured green-band emission and electron−phonon interactions in vertically aligned ZnO nanowires
Authors: Chen, Rui
Tay, Yee Yan
Ye, Jun
Zhao, Yang
Xing, Guozhong
Wu, Tom
Sun, Handong
Keywords: DRNTU::Engineering::Materials::Photonics and optoelectronics materials
Issue Date: 2010
Source: Chen, R., Tay, Y. Y., Ye, J., Zhao, Y., Xing, G., Wu, T., & et al. (2010). Investigation of Structured Green Band Emission and Electron-Phonon Interactions in Vertically Aligned ZnO Nanowires, Journal of Physical Chemistry C, 114(41), 17889-17893.
Series/Report no.: Journal of physical chemistry C
Abstract: We have investigated the green band (GB) emission from vertically aligned ZnO nanowires (NWs) prepared by vapor−liquid−solid growth technique. At low temperatures, the GB emission consists of two sets of zero phonon lines and their phonon replicas independent of the laser excitation power. Temperature-dependent photoluminescence (PL) measurement is performed at temperatures from 10 to 300 K, and the thermal evolution of peak widths and the origin of PL quenching at high temperatures are discussed in detail. The multimode Brownian oscillator model is adopted to reproduce the structured GB and to determine the Huang−Rhys factor. It is found that the two electronic transitions are strongly coupled to different LO phonon modes, and the size-dependent electron−phonon coupling strength is examined.
DOI: 10.1021/jp1064209
Rights: © 2010 American Chemical Society
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles

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