天然色素敏化纳米晶TiO_2太阳能电池研究  

Natural dye-sensitized nanocrystalline TiO_2 solar cell

作　　者：黄昀[1] 吴季怀[1] 范乐庆[1] 陈璐璐[1] 许姿蓉[1] 

机构地区：[1]华侨大学材料物理化学研究所,福建泉州362011

出　　处：《化学工程》2004年第3期47-49,共3页Chemical Engineering(China)

基　　金：国家自然科学基金资助项目(50082003);福建省国际合作项目(20011006);福建省自然科学基金资助项目(E0110026)

摘　　要：介绍了天然色素敏化纳米晶太阳能电池的制作过程。应用分光光度计对大量天然色素进行光谱表征,从中选择与太阳光匹配的光敏化剂,以提高太阳能电池的光电转化率及降低其成本。该电池在全色光的照射下,转化阳光为电能的效率达到2.1%。开路电压为0.53V,短路光电流为4.2mA/cm2。比较所测量到的太阳能电池的光电转换效率时,认为电子被氧化还原介质重捕获而无法有效输送限制了电池的效率。The structure and processing of dyesensitized nanocrystalline solar cell were introduced. A large quantity of natural dye was characterized by spectrophotometer. The sensitizer whose energy band matched with sunlight was selected to raise the photoelectric conversion efficiency and reduce the cost. Under simulated sunlight illumination, an open circuit photovoltage of 0.53 V and a short circuit current density of 4.2 mA/cm2 were measured. The overall energy conversion efficiency of the cell was 2.1%. When compared to the phototocurrent efficiency measured for the solar cell, the electron could not be transported inefficiently because of being recaptured by the redox mediator, thus limiting the efficiency of the cell.

关 键 词：天然色素 太阳能电池 光电转化率 

分 类 号：TM914[电气工程—电力电子与电力传动]