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Journal of Applied Physics : Reduced bound exciton and surface exciton emissions in Al-doped ZnO nanorods exposed to ambient air

By Y. Z. Zhang, H. P. He, Y. Z. Jin, B. H. Zhao, Z. Z. Ye et al

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Book Id: WPLBN0002169369
Format Type: PDF eBook :
File Size: Serial Publication
Reproduction Date: 21 November 2008

Title: Journal of Applied Physics : Reduced bound exciton and surface exciton emissions in Al-doped ZnO nanorods exposed to ambient air  
Author: Y. Z. Zhang, H. P. He, Y. Z. Jin, B. H. Zhao, Z. Z. Ye et al
Volume: Issue : November 2008
Language: English
Subject: Science, Physics, Natural Science
Collections: Periodicals: Journal and Magazine Collection, Journal of Applied Physics Collection
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Publisher: American Institute of Physics

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Zhang, H. P. He, Y. Z. Jin, B. H. Zhao, Z. Z. Ye Et A, Y. Z. (n.d.). Journal of Applied Physics : Reduced bound exciton and surface exciton emissions in Al-doped ZnO nanorods exposed to ambient air. Retrieved from http://community.worldlibrary.net/


Description
Description: Temperature-dependent photoluminescence (PL) spectroscopy is employed to investigate the effects of exposure to ambient air on the optical property of Al-doped ZnO nanorods. Low temperature PL of the as-grown nanorods shows dominant D0X (excitons bound to neutral donors) emission at 3.363 eV and surface state-related emission at 3.310 eV. After exposure to ambient air, both of them vanish and the first LO phonon replica of free exciton is observed instead. It is proposed that surface adsorption and indiffusion of oxygen in ambient air result in surface modification and destruction of D0X complex.

 

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