溶剂热法制备CuIn(S_xSe_(1-x))_2纳米粉体的微观结构与光学特性  

Microstructure and optical properties of CuIn(S_xSe_(1-x))_2 nanoparticles synthesized by solvothermal route

作　　者：段文杰[1,2] 段学臣[1,2] 李历历[1,2] 夏慧[1,2] 朱奕漪[1,2] 

机构地区：[1]中南大学材料科学与工程学院,长沙410083 [2]有色金属材料科学与工程教育部重点实验室,长沙410083

出　　处：《粉末冶金材料科学与工程》2015年第1期86-92,共7页Materials Science and Engineering of Powder Metallurgy

基　　金：湖南省自然科学基金资助项目(13JJ5004)

摘　　要：以乙醇胺为溶剂,以氯化铟、氯化铜、硫化钠、硒粉为原料,采用溶剂热法制备CuIn（SxSe1-x）2（x=0-1）纳米粉末,采用X射线衍射仪（XRD）、场发射扫描电镜（FESEM）、紫外–可见分光光度计等对该粉末的物相结构、形貌及光吸收性能进行分析与表征。结果表明：CuIn（SxSe1-x）2粉末主要为黄铜矿相结构,当S元素掺杂量x〉0.5时,粉末中出现纤锌矿相CuIn（SxSe1-x）2。随x从0增加到1,CuIn（SxSe1-x）2粉末的形貌从片簇状逐渐转变为颗粒状,其吸收边出现＂蓝移＂,禁带宽度从1.16eV增大到1.48eV。A series of Cu In（SxSe1-x）2（x=0-1） nanoparticles were prepared by solvothermal route using indium chloride, copper chloride, sodium sulfide, selenium powders as raw materials, and ethanolamine as solvent. The phase composition, morphology and light absorption properties were characterized by X-ray Diffraction（XRD）, field emission scanning electron microscopy（FESEM） and UV-Visible spectrophotometer, respectively. The results show that the major phase of the products is Chalcopyrite Cu In（SxSe1-x）2. While x is greater than 0.5, the wurtzite Cu In（SxSe1-x）2 also appears in the samples. With x increasing from 0 to 1, the morphologies of the Cu In（SxSe1-x）2 powders evolve gradually from flake to particulate and their light absorption edge is blue-shifting. Further studies reveal that the band gap of as-prepared nanoparticles vary from 1.16 e V to 1.48 e V.

关 键 词：溶剂热 CuIn(SxSe1-x)2 乙醇胺 太阳能电池 光吸收性能 

分 类 号：TB34[一般工业技术—材料科学与工程]