Field Performance versus Standard Test Condition Efficiency of Tandem Solar Cells and the Singular Case of Perovskites/Silicon Devices
Field Performance versus Standard Test Condition Efficiency of Tandem Solar Cells and the Singular Case of Perovskites/Silicon Devices
复制标题
DOI：
10.1021/acs.jpclett.7b02277
复制
发表时间：
2018-01-18
影响因子：
5.7
通讯作者：
Ballif, Christophe
中科院分区：
文献类型：
--
作者：
Dupre, Olivier;Niesen, Bjoern;Ballif, Christophe
多结电池可以提供一种具有成本效益的途径来提高工业光电子学的效率。对于在实地部署的任何技术，其在实际操作条件下的性能极为重要。从这个角度来看，我们评估了光谱，光强度和模块温度变化对晶体硅底部电池串联器件效率的影响，特别关注钙钛矿顶部电池。我们考虑具有不同效率的设备，并使用丹佛的现场数据计算它们的能量产量。我们发现，由于操作条件和标准测试条件之间的差异，每年的损失是类似的单结和四端串联器件。当使用最佳顶电池带隙时，由电流失配引起的双端串联配置的附加损耗仅使其性能比降低1.7%。此外，钙钛矿的不寻常的带隙温度依赖性被证明对电流失配具有积极的补偿作用。
Multijunction cells may offer a cost-effective route to boost the efficiency of industrial photovoltaics. For any technology to be deployed in the field, its performance under actual operating conditions is extremely important. In this perspective, we evaluate the impact of spectrum, light intensity, and module temperature variations on the efficiency of tandem devices with crystalline silicon bottom cells with a particular focus on perovskite top cells. We consider devices with different efficiencies and calculate their energy yields using field data from Denver. We find that annual losses due to differences between operating conditions and standard test conditions are similar for single-junction and four-terminal tandem devices. The additional loss for the two-terminal tandem configuration caused by current mismatch reduces its performance ratio by only 1.7% when an optimal top cell bandgap is used. Additionally, the unusual bandgap temperature dependence of perovskites is shown to have a positive, compensating effect on current mismatch.