串联
钙钛矿(结构)
材料科学
图层(电子)
双层
光伏系统
能量转换效率
光电子学
钙钛矿太阳能电池
沉积(地质)
光致发光
薄膜
纳米技术
化学工程
化学
复合材料
膜
工程类
古生物学
沉积物
生物
生物化学
生态学
作者
Matthias Jost,Tobias Bertram,Dibyashree Koushik,J.A. Marquez,Marcel A. Verheijen,Marc Daniel Heinemann,Eike Köhnen,Amran Al‐Ashouri,Steffen Braunger,Felix Lang,Bernd Rech,Thomas Unold,M. Creatore,Iver Lauermann,Christian A. Kaufmann,Rutger Schlatmann,Steve Albrecht
出处
期刊:ACS energy letters
[American Chemical Society]
日期:2019-01-24
卷期号:4 (2): 583-590
被引量:151
标识
DOI:10.1021/acsenergylett.9b00135
摘要
Perovskite-based tandem solar cells can increase the power conversion efficiency (PCE) of conventional single-junction photovoltaic devices. Here, we present monolithic perovskite/CIGSe tandem solar cells with a perovskite top cell fabricated directly on an as-grown, rough CIGSe bottom cell. To prevent potential shunting due to the rough CIGSe surface, a thin NiOx layer is conformally deposited via atomic layer deposition on the front contact of the CIGSe bottom cell. The performance is further improved by an additional layer of the polymer PTAA at the NiOx/perovskite interface. This hole transport bilayer enables a 21.6% stabilized PCE of the tandem device at ∼0.8 cm2 active area. We use TEM/EDX measurements to investigate the deposition uniformity and conformality of the NiOx and PTAA layers. By absolute photoluminescence measurements, the contribution of the individual subcells to the tandem VOC is determined, revealing that further fine-tuning of the recombination layers might improve the tandem VOC. Finally, on the basis of the obtained results, we give guidelines to improve monolithic perovskite/CIGSe tandems toward predicted PCE estimates above 30%.
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