Ultraviolet and blue-violet photoluminescence of gold nanoparticles

	Ultraviolet and blue-violet photoluminescence of gold nanoparticles
	Zhu, J; Wang, YC
刊名	SPECTROSCOPY AND SPECTRAL ANALYSIS
	2005-02-01
卷号	25 页码:235-238
关键词	gold nanoparticles emission spectrum multiple scattering resonant cavities
ISSN号	1000-0593
英文摘要	Suspended gold nanoparticles (size range 20-30 nm) have been synthesized via electrochemical method. The emission spectra of gold colloidal nanoparticles were studied at room temperature. Fluorescence occurs at ultraviolet and blue-violet wavelengths. Two emission peaks were observed at 377 nm and 459 nm, respectively, when the corresponding excitation wavelength was at 220 rim. The emission peak at 377 nm increases with increasing particle density or excitation intensity, whereas the emission peak at 459 nm decreases with decreasing excitation intensity or increasing the particle density, and disappears below the threshold. With increasing the slit width, the intensity difference between these two emission peaks decreases and the ratio approaches 1. All these observed results are in agreement with the theory of self-organized random rriicro-cavity. It is indicated that the fluorescence emissions in ultraviolet and blue-violet wavelength regions are induced by the multiple scattering in a disordered gold nanoparticles system. And these photoluminescence, features suggest the possible future applications in the areas of optical data storage and full color display.
WOS关键词	SCATTERING ; ENHANCEMENT ; NANORODS
WOS研究方向	Spectroscopy
语种	英语
出版者	BEIJING UNIV PRESS
WOS记录号	WOS:000227457500021
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/25181]
专题	中国科学院近代物理研究所
通讯作者	Zhu, J
作者单位	Xian Jiaotong Univ, Sch Sci, Inst Modern Phys, Xian 710049, Peoples R China
推荐引用方式 GB/T 7714	Zhu, J,Wang, YC. Ultraviolet and blue-violet photoluminescence of gold nanoparticles[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2005,25:235-238.
APA	Zhu, J,&Wang, YC.(2005).Ultraviolet and blue-violet photoluminescence of gold nanoparticles.SPECTROSCOPY AND SPECTRAL ANALYSIS,25,235-238.
MLA	Zhu, J,et al."Ultraviolet and blue-violet photoluminescence of gold nanoparticles".SPECTROSCOPY AND SPECTRAL ANALYSIS 25(2005):235-238.