TITLE

Surface plasmon induced exciton redistribution in ZnCdO/ZnO coaxial multiquantum-well nanowires

AUTHOR(S)
Liu, B.; Cheng, C. W.; Chen, R.; Ekahana, S. A.; Yang, W. F.; Wang, S. J.; Sum, T. C.; Shen, Z. X.; Fan, H. J.; Sun, H. D.
PUB. DATE
August 2010
SOURCE
Applied Physics Letters;8/23/2010, Vol. 97 Issue 8, p081107
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The authors present the surface plasmon effects of Au nanoparticles on the photoluminescence properties of ZnCdO/ZnO coaxial multiquantum-well nanowires fabricated using chemical vapor deposition and pulse laser deposition methods. The spontaneous emission rate from ZnCdO quantum wells was increased by surface plasmon coupling by 1.29 times. The strong plasmon coupling between ZnO barriers and Au nanoparticles provides an extra fast decay channel for excitons generated in ZnO barrier layer and leads to exciton redistribution in ZnCdO/ZnO coaxial quantum wells, which promotes radiative recombination in ZnO barriers but reduces the number of excitons relaxing into the ZnCdO quantum wells.
ACCESSION #
53421583

 

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