不同厚度多孔TiO_2光阳极对量子点敏化太阳能电池性能的影响  

Effect of the mesoporous TiO_2 photoanodes with different thickness on the properties of quantum dots sensitized solar cells

作　　者：段良升 高其乾 王鹏[1,2] 张学宇[1,2] 吕威[1,2] DUAN Liangsheng GAO Qiqian WANG Peng ZHANG Xueyu LYU Wei(School of Materials Science and Engineering, Changchun University of Technology, Changchun 130012, China Advanced Institute of Materials Science, Changchun University of Technology, Changchun 130012, China)

机构地区：[1]长春工业大学材料科学与工程学院,吉林长春130012 [2]长春工业大学材料科学高等研究院,吉林长春130012

出　　处：《长春工业大学学报》2016年第5期437-441,共5页Journal of Changchun University of Technology

基　　金：国家自然科学基金资助项目(61376020);吉林省自然科学基金资助项目(20130101009JC);长春市科技局基金资助项目(C2014030709MA)

摘　　要：通过旋涂法以P25、松油醇、乙基纤维素为原料制备了浆料,并将其均匀涂布在FTO导电玻璃上,通过控制旋涂次数来制备不同厚度的TiO_2光阳极膜,利用扫描电子显微镜(SEM)对其形貌和结构进行了表征。采用CdS量子点做敏化剂,通过连续离子层沉积(SILAR)法制备CdS/TiO_2光阳极,以化学浴沉积(CBD)法制备CuS对电极,最终组装为电池器件。通过对电池的光电性能测试,首先明确了不同CdS沉积次数的CdS/TiO_2光阳极对电池的光电性能影响,在最佳的CdS沉积次数上得到了不同旋涂厚度TiO_2光阳极对电池的光电性能的影响。实验结果表明,当CdS沉积次数为9次,TiO_2旋涂次数为3次,厚度为15μm时,电池的短路电流密度和光电转换效率均达到最大值分别为:Isc=8.18mA·cm-2、η=2.32%。The coating paste is obtained by mixing the P25,terpineol and ethyl cellulose.The mesoporous TiO_2 films are fabricated on conducting glasses by spin coating,and the film thickness is controlledby spin coating times.The CdS quantum dot sensitizers on mesoporous TiO_2 films areprepared by successive ionic layer adsorption and reaction method.CuS-coated counterelectrodes are deposited by chemical bath deposition method.We investigated the dependence of energy conversion efficiencies on the different deposition times.Based on the optimal deposition times of CdS quantum dots,we acquired the dependence of energy conversion efficiencies on the repetitive coating times of TiO_2.The results demonstrate that the best short circuit photocurrent（8.18 mA ·cm-2）and efficiency（2.32%）are obtained by the cell with threetime spin coating of TiO_2 and the 15μm thickness.

关 键 词：介孔TIO2 旋涂法 光阳极 量子点敏化太阳能电池 

分 类 号：O649[理学—物理化学]