摘要
CdS/CdTe太阳电池是薄膜太阳电池研究工作的一个重要方向.为了提高开路电压Voc、改善电池的光谱响应,进而提高电池的转换效率,在此提出CdS/CdTe叠层太阳电池结构.文中,叠层电池的顶电池由CdS/CdTe超薄层构成;底电池由CdS/CdTe薄膜层构成.经分析测试,实验制备的CdS/CdTe叠层太阳电池具有明显的叠层结构,开路电压最高达到了852mV,短路电流密度最大为13mA/cm2,填充因子最高为55·2%,这种叠层电池的效率达到了8·16%(0·071cm2).研究表明相对于传统的单层CdS/CdTe太阳电池,CdS/CdTe叠层电池的制备对研究如何提高CdS/CdTe太阳电池的光伏性能有一定的参考价值.
In order to increase Voc and improve the spectral response of CdS/CdTe solar cells,thus increasing their efficiency,we bring forward a new tandem structure. The top cell consists of thinner CdS/CdTe layers,and the bottom cell structure of thicker CdS/CdTe layers. The total structure is Glass/SnO2/CdS/CdTe/CdS/CdTe/ZnTe：Cu/Ni. The structural properties of the tandem solar cells have been investigated,revealing its different layers and showing that it has Voc of 852mV, Jsc of 13mA/cm^2 ,and FF of 55.2%. The spectral response of the cell is improved,and it is demonstrated to have an efficiency of 8.16% for 0. 071cm^2 cells. Compared to the ordinary monolayer CdS/CdTe solar cells, the CdS/CdTe tandem solar cells have important value for investigating how to improve CdS/CdTe solar cells＇ photovoltaic performance.
基金
国家高技术研究发展计划(批准号:2004AA513010)
国家自然科学基金(批准号:60506004)资助项目~~
