溶剂热法CuInSe_2粉体的形貌可控制备与表征  

Synthesis and Characterization of Morphology-Controllable CuInSe_2 Powders by Solvothermal Route

作　　者：段学臣[1,2] 蒋波[1,2] 程亚娟[1,2] 孙巧珍[1,2] 朱磊[1] 刘扬林[1] 

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：《无机化学学报》2011年第2期293-297,共5页Chinese Journal of Inorganic Chemistry

基　　金：湖南省科技计划项目(No.2009FJ3097);湖南省自然科学基金重点项目(No.08JJ3104)资助

摘　　要：采用溶剂热法,通过改变反应温度和初始nCu/nIn比制备了一系列CuInSe2粉体。粉体的物相结构、形貌、光吸收性能分别用X射线衍射仪(XRD)、场发射扫描电镜(FESEM)、透射电镜(TEM)、紫外-可见分光光度计(UV-Vis)进行了表征。结果表明:180℃反应即可形成纯黄铜矿型CuInSe2粉体;随着反应温度的升高,粉体形貌有"片-片簇-球簇"的演变规律,其光吸收性能也随之增强,出现"红移"现象;初始nCu/nIn比能有效调控片簇的致密度。同时探讨了粉体不同形貌的形成机理。A series of CuInSe2 powders were prepared respectively by changing the reaction temperatures and initial Cu/In molar ratios,via a facile solvothermal route.The phase,morphology and light absorption performance were characterized by XRD,FESEM,TEM and UV-Vis,respectively.It is found that the chalcopyrite CuInSe2 can be successfully fabricated at 180 ℃.While increasing the reaction temperature,the morphologies of as-prepared powders evolve gradually from flake to 2-Dimension（2D） hexagonal flake cluster,then to 2D hexagonal sphere cluster.And their light absorption properties can also be resluting enhanced with a red shift of the absorption edge.Further studies reveal that the initial Cu/In molar ratios can effectively control the density of flake cluster.Additionally,a possible growth mechanism of the novel morphologies is also preliminarily discussed in this paper.

关 键 词：溶剂热 CUINSE2 形貌 光吸收 机理 

分 类 号：O614.121[理学—无机化学] O614.372[理学—化学]