THEORETICAL DEPENDENCE OF LONG WAVELENGTH PHOTOEMISSION UPON THE SIZE OF Ag NANOPARTICLES EMBEDDED IN BaO SEMICONDUCTOR THIN FILM

• 来源期刊: 中国物理（英文版）
• 学科: 物理学
• 关键词: photoemission thin film semiconductors
• 年，卷（期）: 2001,（11）
• 所属期刊栏目: CONDENSED MATTER：ELECTRONIC STRUCTURE，ELECTRICAL
• 页码范围: 1062-1065
• 页数: 4页
• 分类号: O4
• 语种: 英文

摘要

The dependence of long wavelength photoemission upon the size of Ag nanoparticles embedded in a BaO semicon- ductor is predicted and discussed theoretically. The calculated results show that the increase in the diameter of the Ag nanoparticle, in the range from 1.5 to 37.0nm, leads to the emergence of a roughly Gaussian form of the photoemission spectra and the peaks become markedly narrower. The results also show that the increase in the diameter of the Agnanoparticle leads to the decrease of the long wavelength threshold. The incident light wavelength corresponding to the peak value of the photoemission gets bigger with the increase of the size of Ag nanoparticles, thus showing a redshift.