Efficient and stable perovskite-silicon tandem solar cells with copper thiocyanate-embedded perovskite on textured silicon

IF 32.3 1区 物理与天体物理 Q1 OPTICS Nature Photonics Pub Date : 2024-11-04 DOI:10.1038/s41566-024-01561-5
Chenxia Kan, Pengjie Hang, Shibo Wang, Biao Li, Xuegong Yu, Xinbo Yang, Yuxin Yao, Wei Shi, Stefaan De Wolf, Jun Yin, Daoyong Zhang, Degong Ding, Cao Yu, Shaofei Yang, Jiteng Zhang, Jia Yao, Xiaohong Zhang, Deren Yang
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Abstract

Monolithic perovskite/silicon tandem solar cells have achieved promising performance. However, hole transport layers that are commonly used for the perovskite top cell suffer from defects, non-conformal deposition or de-wetting of the overlying perovskite on the textured silicon bottom cells. These issues detrimentally affect device reproducibility and scalability, and thus commercialization. Here we address these challenges through the co-deposition of copper(I) thiocyanate and perovskite, where effective perovskite grain boundary passivation and efficient hole collection are simultaneously achieved by the embedded copper(I) thiocyanate, which creates local hole-collecting contacts. Fabricated monolithic perovskite/silicon tandem devices achieve a certified power conversion efficiency of 31.46% for 1 cm2 area devices. Aside from good reproducibility and scalability, our tandem cells exhibit excellent stability, maintaining 93.8% of their initial power conversion efficiency after about 1,200 h of maximum power point tracking at 45 °C, and 90.2% after over 1,000 h of damp-heat testing at 85 °C and 85% relative humidity.

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在纹理硅上使用硫氰酸铜嵌入包晶石的高效稳定的包晶石-硅串联太阳能电池
单片式过氧化物/硅串联太阳能电池已经取得了可喜的性能。然而,通常用于顶部包晶石电池的空穴传输层存在缺陷、不规则沉积或纹理硅底部电池上覆包晶石的去湿问题。这些问题严重影响了设备的可重复性和可扩展性,进而影响了商业化。在这里,我们通过硫氰酸铜(I)和包晶石的共沉积来解决这些难题,嵌入的硫氰酸铜(I)可同时实现有效的包晶石晶界钝化和高效的空穴收集,从而形成局部空穴收集接触。在 1 平方厘米面积的器件上,制作的单片闪长岩/硅串联器件的功率转换效率达到了 31.46%。除了良好的重现性和可扩展性外,我们的串联电池还表现出卓越的稳定性,在 45 °C、最大功率点跟踪约 1,200 小时后,仍能保持 93.8% 的初始功率转换效率;在 85 °C、相对湿度 85% 的条件下,经过超过 1,000 小时的湿热测试后,仍能保持 90.2% 的转换效率。
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来源期刊
Nature Photonics
Nature Photonics 物理-光学
CiteScore
54.20
自引率
1.70%
发文量
158
审稿时长
12 months
期刊介绍: Nature Photonics is a monthly journal dedicated to the scientific study and application of light, known as Photonics. It publishes top-quality, peer-reviewed research across all areas of light generation, manipulation, and detection. The journal encompasses research into the fundamental properties of light and its interactions with matter, as well as the latest developments in optoelectronic devices and emerging photonics applications. Topics covered include lasers, LEDs, imaging, detectors, optoelectronic devices, quantum optics, biophotonics, optical data storage, spectroscopy, fiber optics, solar energy, displays, terahertz technology, nonlinear optics, plasmonics, nanophotonics, and X-rays. In addition to research papers and review articles summarizing scientific findings in optoelectronics, Nature Photonics also features News and Views pieces and research highlights. It uniquely includes articles on the business aspects of the industry, such as technology commercialization and market analysis, offering a comprehensive perspective on the field.
期刊最新文献
Author Correction: Image-guided computational holographic wavefront shaping Efficient and stable perovskite-silicon tandem solar cells with copper thiocyanate-embedded perovskite on textured silicon Attosecond transient interferometry Minute-scale Schrödinger-cat state of spin-5/2 atoms Nonlinear optical colloidal metacrystals
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