NDLI: Visible photoluminescence in ZnO tetrapod and multipod structures

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Visible photoluminescence in ZnO tetrapod and multipod structures

Content Provider	Semantic Scholar
Author	Djurišić, Aleksandra B. Leung, Yu Hang Choy, Wallace C. H. Cheah, Kok Wai Chan, Wai Kin
Copyright Year	2004
Abstract	The properties of ZnO tetrapod and multipod structures were investigated using scanning electron microscopy, x-ray diffraction, photoluminescence (PL), and electron paramagnetic resonance (EPR) spectroscopy. While there is relationship between g=1.96 EPR and green PL in some of the samples, this is not the case for all the samples. Therefore, the commonly assumed transition between a singly charged oxygen vacancy and photoexcited hole [K. Vanheusden, C. H. Seager, W. L. Warren, D. R. Tallant, and J. A. Voigt, Appl. Phys. Lett. 68, 403 (1996)] does not explain the green emission in all ZnO samples. The green emission likely originates from surface defects.The properties of ZnO tetrapod and multipod structures were investigated using scanning electron microscopy, x-ray diffraction, photoluminescence (PL), and electron paramagnetic resonance (EPR) spectroscopy. While there is relationship between g=1.96 EPR and green PL in some of the samples, this is not the case for all the samples. Therefore, the commonly assumed transition between a singly charged oxygen vacancy and photoexcited hole [K. Vanheusden, C. H. Seager, W. L. Warren, D. R. Tallant, and J. A. Voigt, Appl. Phys. Lett. 68, 403 (1996)] does not explain the green emission in all ZnO samples. The green emission likely originates from surface defects.
Starting Page	2635
Ending Page	2637
Page Count	3
File Format	PDF HTM / HTML
DOI	10.1063/1.1695633
Volume Number	84
Alternate Webpage(s)	https://www.eee.hku.hk/~chchoy/doc/68/68.pdf
Alternate Webpage(s)	https://doi.org/10.1063/1.1695633
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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