CdS量子点敏化TiO_2光阳极的可控构筑及其光电传输特性  

Controllable fabrication of CdS quantum dot-sensitized TiO_2 photoelectrode and its photoelectrical transfer properties

作　　者：齐立红[1] 张宏宇[2] 潘凯[2] 

机构地区：[1]哈尔滨工程大学理学院,哈尔滨150001 [2]黑龙江大学化学化工与材料学院,哈尔滨150080

出　　处：《黑龙江大学工程学报》2015年第1期43-47,共5页Journal of Engineering of Heilongjiang University

基　　金：国家自然科学基金资助项目(51302047)

摘　　要：以Cd(NO3)2,Na2S和TiO2为原料,采用连续离子层沉积法制备不同层数的CdS/TiO2光阳极。以Pt作对电极,CdS量子点做敏化剂,组装了不同层数的量子点敏化太阳能电池。通过对电池的光电性能测试,得到了不同层数CdS/TiO2光阳极电池的光电性能参数。结合I-V曲线图、I-T曲线图和交流阻抗谱图,分析了不同层数CdS/TiO2光阳极的光电特性和光电传输特性,通过SEM测试,探讨了CdS/TiO2的形貌。实验结果表明:CdS的含量在一定范围内能有效地改善光阳极的导电性能,15次循环沉积,CdS量子点敏化TiO2光阳极的转换效率最高。Cd（NO3）2,Na2S and TiO2 were used as raw materials to prepare different layers of CdS/TiO2 photoanode through continuous ion layer deposition method.Using Pt as counter electrode and CdS sensitized TiO2 as photoelectrode,quantum dot-sensitized solar cell with different layers of CdS was fabricated,and photoelectric parameters by photoelectric characters test were got.Combined with J-V curves,I-T curves and EIS curves,photoelectric characters of different layers of CdS/TiO2 photoanode were analyzed.Through SEM test,the morphology of the CdS sensitized TiO2 was researched.The results shows that the content of CdS would be effective within a certain range to improve the conductivity of photoanode,of which 15 layers of CdS/TiO2 had the highest photoelectric conversion efficiency.

关 键 词：连续离子沉积 量子点敏化 光电性能 电子传输特性 

分 类 号：O646.54[理学—物理化学]