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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引用次数: 0
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.
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.