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ZnO nanobelts are synthesized in high yield by a simple chemical vapor deposition method, at low temperature. And then Au nanoparticles are sputtered on the ZnO nanobelts. The effect on the photoluminescence of Au-ZnO composite nanobelts by surface plasmon is systematically investigated by the scanning electron microscopy, transmission electron microscopy and photoluminescence spectrum. The enhancement ratio by surface plasmon resonance and the almost completely suppressed defect emission for Au-ZnO composite nanobelts are observed, and the emission enhancement ratio η of Au-ZnO composite nanobelts reaches a maximal value of 85-fold. Additionally, the photoluminescence mechanism is proposed in terms of the scattering and absorption by Au nanoparticles, the Purcell enhancement factor, and the Ostwald ripening.
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Keywords:
- surface plasmon /
- photoluminescence /
- ZnO
[1] Bai X D, Gao P X, Wang Z L, Wang E G 2003 Appl. Phys. Lett. 82 4806
[2] Wang Z L, Song J 2006 Science 31 242
[3] Sun H, Zhang Q F, Wu J L 2007 Acta Phys. Sin. 56 3479 (in Chinese) [孙晖, 张琦锋, 吴锦雷 2007 物理学报 56 3479]
[4] Qiu D J, Fan W Z, Weng S, Wu H Z, Wang J 2011 Acta Phys. Sin. 60 087301 (in Chinese) [邱东江, 范文志, 翁圣, 吴惠桢, 王俊 2011物理学报 60 087301]
[5] Lai C W, An J, Ong H C 2005 Appl. Phys. Lett. 86 251105
[6] Yang W F, Chen R, Liu B, Gurzadyan G G, Wong L M, Wang S J, Sun H D 2010 Appl. Phys. Lett. 97 061104
[7] Liu K W, Tang Y D, Cong C X, Sum T C, Huan A C H, Shen Z X, Wang L, Jiang F Y, Sun X W, Sun D 2009 Appl. Phys. Lett. 94 151102
[8] Yang W Y, Gao F M, Wei G D, An L 2010 Cryst. Growth Des. 10 29
[9] Lin J M, Lin H Y, Cheng C L, Chen Y F 2006 Nanotechnology 17 4391
[10] Richters J, Voss T, Wischmeier L, Rckmann I, Gutowski J 2008 Appl. Phys. Lett. 92 011103
[11] Purcell E M 1946 Phys. Rev. 69 681
[12] Li J, Ong H C 2008 Appl. Phys. Lett. 92 121107
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[1] Bai X D, Gao P X, Wang Z L, Wang E G 2003 Appl. Phys. Lett. 82 4806
[2] Wang Z L, Song J 2006 Science 31 242
[3] Sun H, Zhang Q F, Wu J L 2007 Acta Phys. Sin. 56 3479 (in Chinese) [孙晖, 张琦锋, 吴锦雷 2007 物理学报 56 3479]
[4] Qiu D J, Fan W Z, Weng S, Wu H Z, Wang J 2011 Acta Phys. Sin. 60 087301 (in Chinese) [邱东江, 范文志, 翁圣, 吴惠桢, 王俊 2011物理学报 60 087301]
[5] Lai C W, An J, Ong H C 2005 Appl. Phys. Lett. 86 251105
[6] Yang W F, Chen R, Liu B, Gurzadyan G G, Wong L M, Wang S J, Sun H D 2010 Appl. Phys. Lett. 97 061104
[7] Liu K W, Tang Y D, Cong C X, Sum T C, Huan A C H, Shen Z X, Wang L, Jiang F Y, Sun X W, Sun D 2009 Appl. Phys. Lett. 94 151102
[8] Yang W Y, Gao F M, Wei G D, An L 2010 Cryst. Growth Des. 10 29
[9] Lin J M, Lin H Y, Cheng C L, Chen Y F 2006 Nanotechnology 17 4391
[10] Richters J, Voss T, Wischmeier L, Rckmann I, Gutowski J 2008 Appl. Phys. Lett. 92 011103
[11] Purcell E M 1946 Phys. Rev. 69 681
[12] Li J, Ong H C 2008 Appl. Phys. Lett. 92 121107
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