Enhancement of light trapping in thin-film solar cells through Ag

• Published in: Chinese optics letters Vol. 9; no. 3; pp. 80 - 83
• Main Author: 白一鸣 张汉 王俊 陈诺夫 姚建曦 黄添懋 张兴旺 尹志岗 付振
• Format: Journal Article
• Language: English
• Published: 10-03-2011
• Subjects: 前向散射; 散射光谱; 法兰克福; 薄膜太阳能电池; 表面覆盖率; 诱捕效果; 银纳米粒子
• ISSN: 1671-7694
• DOI: 10.3788/COL201109.032901

Forward-scattering efficiency （FSE） is first proposed when an Ag nanoparticle serves as the light-trapping structure for thin-film （TF） solar cells because the Ag nanoparticle’s light-trapping efficiency lies on the light-scattering direction of metal nanoparticles.Based on FSE analysis of Ag nanoparticles with radii of 53 and 88 nm,the forward-scattering spectra and light-trapping efficiencies are calculated.The contributions of dipole and quadrupole modes to light-trapping effect are also analyzed quantitatively.When the surface coverage of Ag nanoparticles is 5%,light-trapping efficiencies are 15.5% and 32.3%,respectively,for 53and 88-nm Ag nanoparticles.Results indicate that the plasmon quadrupole mode resonance of Ag nanoparticles could further enhance the light-trapping effect for TF solar cells.