CuInS2/石墨烯混合物的合成及其在太阳能电池中的应用(英文)  

Synthesis of CuInS_2 nanocrystal/graphene nano-network counter electrodes for enhanced efficiency dye-sensitized solar cells

作　　者：华健[1] 林运祥[1] 周雷[1] 杨晓[1] 左学勤[1] 李广[1,2] 

机构地区：[1]安徽大学物理与材料科学学院,安徽合肥230601 [2]安徽省信息材料与器件重点实验室,安徽合肥230601

出　　处：《安徽大学学报（自然科学版）》2015年第1期83-91,共9页Journal of Anhui University(Natural Science Edition)

基　　金：Supported by the Student Research Training Program of Anhui University(KYXL2012015)

摘　　要：在不同的溶剂中通过温和的溶剂热法,成功地合成CuInS2纳米晶体.这些合成好的CuInS2粉末被X光衍射表征后,又作为对电极被组装成染料敏化太阳能电池.通过检测可以发现乙二醇是合成CuInS2过程中最佳的溶液.这主要表现在用乙二醇合成的CuInS2作为电池对电极时的转化率可以达到5.49%,这个值要比用其他溶液合成的CuInS2转化率高.然后,将在乙二醇溶剂中合成的CuInS2粉末与石墨烯的氧化物混合形成CuInS2纳米晶体/石墨烯纳米复合材料,这种材料可以提高CuInS2在染料敏化太阳能电池方面的性能.通过透射电子显微镜法,可以证明CuInS2生长在石墨烯纳米网中.与传统的铂对电极电池(6.90%)相比,这种纳米复合材料具有相对较好的光电转化率(6.28%).CuInS2nanocrystals have been successfully synthesized through a facile solvothermal method in different solvent systems.The as-prepared CuInS2 powders were characterized by X-ray diffraction and were used as counter electrode to fabricate dyesensitized solar cells.It was found that ethylene glycol was the optimal solvent for synthesizing CuInS2 because the power conversion efficiency of the cell using this CuInS2 powder as counter electrode could reach 5.49%,which was superior to others.The CuInS2 powder synthesized in ethylene glycol was mixed with reduced graphene oxide to form CuInS2nanocrystal/reduced graphene oxide nanocomposites for enhance its performance in dye-sensitized solar cells.Transmission electron microscopy demonstrated that CuInS2 nanocrystals were grown along graphene networks.It was found that this nanocomposites achieved higher power conversion efficiency（6.28%）, which was comparable to the conventional device using platinum as counter electrode（6.90%）.

关 键 词：CuInS2 对电极 染料敏化太阳能电池(DSSC) 石墨烯纳米混合物 转化率 

分 类 号：Q946.84[生物学—植物学] Q946.5