WANG Yue-hui1, SHEN Jian-hong2, LI Na-jing1, JIN Fan1, HE Qiang1
1. Department of Chemistry and Biology, University of Electronic Science and Technology of China, Zhongshan Institute, Zhongshan 528402, China 2. School of Materials Science and Engineering, Henan University of Technology, Zhengzhou 450001, China
Abstract：In the present paper, the photoluminescence of silver nanoparticles with different size and surface modifier was studied. The results show that the strong emission peak at 362 nm and the two weak emission peaks at 592 and 725 nm respectively were observed by excitation at different wavelengths. With increasing excitation wavelength, the intensity of emission peak decreased and the emission peak at 362 nm red-shifted. Otherwise, the photoluminescence of silver nanoparticles was sensitive to the excitation light of 210 nm. The emission peak has little relation with the surface modification and particle size of silver nanoparticles, just as the particle size decreased, the intensity of peak decreased. The intensity of emission peak decreased with the slit width decreased. The emission peaks gradually gathered together and merged into single peak at 426 nm, and the intensity first increased and then decreased. The mechanism of photoluminescence of silver nanoparticles was discussed by absorption-reemission of photoelectrons and interface energy hybridization.
王悦辉1，沈建红2，李娜静1，金 帆1，何 强1. 纳米银粒子的发光特性研究[J]. 光谱学与光谱分析, 2012, 32(11): 2935-2938.
WANG Yue-hui1, SHEN Jian-hong2, LI Na-jing1, JIN Fan1, HE Qiang1. Photoluminescence of Silver Nanoparticles. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(11): 2935-2938.
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