A novenovel Sb2S3-Sb2Se3 nanostructure on single crystalline TiO2 nanorod arrays for solar cell applications
Semiconductor quantum dots have attracted significant attention in the past few years as a next generation absorber material for solar cell applications.Sb2S3 and Sb2Se3 quantum dots have received much attention as building blocks for use in solar energy conversion due to their unique optoelectronic properties including high optical absorptivity and tunable band gap.In this paper,we present a novel method to increase the effective action area via introduction of 3D TiO2 nanorod arrays.By using a hydrothermal method at low temperature,a large area of anataseTiO2 nanorod arrays was successfully grown on the F: SnO2 conductive glass.Sb2S3-Sb2Se3 nanostructures were deposited onto TiO2 nanorod arrays via a successive ionic layer adsorption and reaction (SILAR) method.The phases of Sb2S3 and Sb2Se3 nanocrystals were characterized by X-ray diffraction (XRD) pattern.Scanning electron microscopy (SEM) studies reveal that the Sb2S3 nanoparticles adhere to the TiO2 nanorods and space between the nanorods was filled with Sb2Se3 nanoparticles.As the SILAR cycles of Sb2Se3 nanoparticles growth increased,the band gap of the samples were narrowed,which suggests a controllable absorption edge from 1.7eV to long wave length.The photovoltaic properties of solar cells using the Sb2S3-Sb2Se3 nanostructure as the absorber were also discussed.
nanostructured solar cells TiO2 Sb2S3 Sb2Se3 Nanorod
Yitan Li Ruizi Zhang Xing Sui Yanxue Chen
School of Physics and State Key Laboratory of Crystal Materials, Shandong University, Jinan250100, P. R. China
国际会议
中国微米纳米技术学会第14届学术年会、第3届国际年会暨第6届微米纳米技术“创新与产业化国际研讨与展览会(CSMNT2012 & ICMAN2012)
杭州
英文
1-5
2012-11-04（万方平台首次上网日期，不代表论文的发表时间）