High-performance perovskite/Cu(In,Ga)Se2 monolithic tandem solar cells
High-performance perovskite/Cu(In,Ga)Se2 monolithic tandem solar cells
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DOI：
10.1126/science.aat5055
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发表时间：
2018-08-31
期刊：
影响因子：
56.9
通讯作者：
Yang, Yang
中科院分区：
文献类型：
--
作者：
Han, Qifeng;Hsieh, Yao-Tsung;Yang, Yang
混合钙钛矿和Cu（In，Ga）Se-2（CIGS）的组合具有实现高效薄膜叠层太阳能电池的潜力，因为这些材料的互补可调带隙和优异的光伏特性。在串联太阳能器件架构中，互连层在决定整体电池性能方面起着关键作用，需要有效的电连接和高光学透明度。我们使用CIGS表面的纳米级界面工程和子电池之间的重掺杂聚[双（4-苯基）（2，4，6-三甲基苯基）胺]（PTAA）空穴传输层，其保持开路电压并增强填充因子和短路电流。单片钙钛矿/CIGS串联太阳能电池实现了22.43%的效率，并且在环境条件下的未封装器件在连续1个太阳照射下老化500小时后保持其初始效率的88%。
The combination of hybrid perovskite and Cu(In,Ga)Se-2 (CIGS) has the potential for realizing high-efficiency thin-film tandem solar cells because of the complementary tunable bandgaps and excellent photovoltaic properties of these materials. In tandem solar device architectures, the interconnecting layer plays a critical role in determining the overall cell performance, requiring both an effective electrical connection and high optical transparency. We used nanoscale interface engineering of the CIGS surface and a heavily doped poly[bis(4-phenyl)(2,4,6-trimethylphenyl) amine] (PTAA) hole transport layer between the subcells that preserves open-circuit voltage and enhances both the fill factor and short-circuit current. A monolithic perovskite/CIGS tandem solar cell achieved a 22.43% efficiency, and unencapsulated devices under ambient conditions maintained 88% of their initial efficiency after 500 hours of aging under continuous 1-sun illumination.