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Mechanically Stacked, Two-Terminal Graphene-Based Perovskite/Silicon Tandem Solar Cell with Efficiency over 26%
Joule ( IF 39.8 ) Pub Date : 2020-02-17 , DOI: 10.1016/j.joule.2020.01.015
Enrico Lamanna , Fabio Matteocci , Emanuele Calabrò , Luca Serenelli , Enrico Salza , Luca Martini , Francesca Menchini , Massimo Izzi , Antonio Agresti , Sara Pescetelli , Sebastiano Bellani , Antonio Esaú Del Río Castillo , Francesco Bonaccorso , Mario Tucci , Aldo Di Carlo

Perovskite/silicon tandem solar cells represent an attractive pathway to upgrade the market-leading crystalline silicon technology beyond its theoretical limit. Two-terminal architectures result in reduced plant costs compared to four-terminal ones. However, it is challenging to monolithically process perovskite solar cells directly onto the micrometer-sized texturing on the front surface of record-high efficiency amorphous/crystalline silicon heterojunction cells, which limits both high-temperature and solution processing of the top cells. To tackle these hurdles, we present a mechanically stacked two-terminal perovskite/silicon tandem solar cell, with the sub-cells independently fabricated, optimized, and subsequently coupled by contacting the back electrode of the mesoscopic perovskite top cell with the texturized and metalized front contact of the silicon bottom cell. By minimizing optical losses, as achieved by engineering the hole selective layer/rear contact structure, and using a graphene-doped mesoporous electron selective layer for the perovskite top cell, the champion tandem device demonstrates a 26.3% efficiency (25.9% stabilized) over an active area of 1.43 cm2.



中文翻译:

机械堆叠的基于两个末端石墨烯的钙钛矿/硅串联太阳能电池,效率超过26%

钙钛矿/硅串联太阳能电池是将市场领先的晶体硅技术升级到超出其理论极限的诱人途径。与四端子架构相比,两端子架构可降低工厂成本。然而,将钙钛矿型太阳能电池直接单片处理到记录效率高的非晶/晶体硅异质结电池正面的微米级纹理上是有挑战性的,这限制了顶部电池的高温处理和固溶处理。为了解决这些问题,我们提出了一种机械堆叠的两端子钙钛矿/硅串联太阳能电池,其子电池是独立制造,优化的,然后通过使介观钙钛矿顶部电池的背面电极与硅底部电池的组织化和金属化正面接触而耦合。通过最小化光学损耗(如通过设计空穴选择层/后接触结构并为钙钛矿顶部电池使用石墨烯掺杂的中孔电子选择层实现的),该冠军级串联器件显示出26.3%的效率(稳定的25.9%)。有效面积1.43厘米2

更新日期:2020-02-17
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