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

作　　者：白一鸣 张汉 王俊 陈诺夫 姚建曦 黄添懋 张兴旺 尹志岗 付振 

机构地区：[1]Beijing Key Laboratory of New and Renewable Energy,North China Electric Power University [2]Key Laboratory of Semiconductor Materials Science,Institute of Semiconductors,Chinese Academy of Sciences [3]National Engineering Research Center for Optoelectronic Devices,Institute of Semiconductors,Chinese Academy of Sciences

出　　处：《Chinese Optics Letters》2011年第3期80-83,共4页中国光学快报（英文版）

基　　金：supported by the Natural Science Foundation of Beijing (No.2102042);the National Natural Science Foundation of China (No.20876040);the Fundamental Research Funds for the Central Universities (No.10QG24)

摘　　要：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.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.

关 键 词：EFFICIENCY Forward scattering NANOPARTICLES Solar cells 

分 类 号：TM914.42[电气工程—电力电子与电力传动] O436.2[机械工程—光学工程]