Ag nanoparticles preparation and their light trapping performance  

作　　者：BAI YiMing WANG Jun YIN ZhiGang CHEN NuoFu ZHANG XingWang FU Zhen YAO JianXi LI Ning HE HaiYang GULI MiNa 

机构地区：[1]School of Renewable Energy Engineering,North China Electric Power University [2]The New and Renewable Energy of Beijing Key Laboratory [3]Key Laboratory of Semiconductor Materials Science,Institute of Semiconductors,Chinese Academy of Sciences [4]National Engineering Research Center for Optoelectronic Devices,Institute of Semiconductors,Chinese Academy of Sciences

出　　处：《Science China(Technological Sciences)》2013年第1期109-114,共6页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 61006050 and 51072051);the Natural Science Foundation of Beijing,China (Grant No. 2102042);the Fundamental Research Funds for the Central Universities (Grant No. 10QG24);the National High Technology Research and Development Program ("863" Project)(Grant No. 2011AA050507);the National Basic Research Program of China("973" Project)(Grant No. 2010CB93380)

摘　　要：Ag nanoparticles were fabricated on Si substrates by radio-frequency magnetron sputtering and thermal annealing treatments.It was found that Ag nanoparticles are ellipsoid at low annealing temperature,but the axis ratio decreases with the increase of annealing temperature,and a shape transformation from ellipsoid to sphere occurs when the temperature increases to a critical point.The experimental results showed that the surface plasmon resonances depend greatly on the nanoparticles'shape and size,which is in accordance with the theoretical calculation based on discrete dipole approximation.The results of forward-scattering efficiency(FSE) and light trapping spectrum(LTS) showed that Ag nanoparticles annealed at 400°C could strongly enhance the light harvest than those annealed at 300 and 500°C,and that the LTS peak intensity of the former is 1.7 and 1.5 times stronger than those of the later two samples,respectively.The conclusions obtained in this paper showed that Ag ellipsoid nanoparticles with appropriate size is more favorable for enhancing the light trapping.

关 键 词：thin film solar cells light trapping structure plasmonic nanoparticles 

分 类 号：TB383.1[一般工业技术—材料科学与工程]