当前位置: X-MOL 学术ACS Energy Lett. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Suppressing Nonradiative Losses in Wide-Band-Gap Perovskites Affords Efficient and Printable All-Perovskite Tandem Solar Cells with a Metal-Free Charge Recombination Layer
ACS Energy Letters ( IF 19.3 ) Pub Date : 2022-12-13 , DOI: 10.1021/acsenergylett.2c02156
Xinming Zhou 1 , Hongwei Lai 1 , Ting Huang 1 , Chaoran Chen 1 , Zhenhua Xu 1 , Yuzhao Yang 1 , Shaohang Wu 1 , Xiudi Xiao 2 , Lang Chen 3 , Christoph J. Brabec 4, 5 , Yaohua Mai 1 , Fei Guo 1
Affiliation  

Although the efficiencies of all-perovskite tandem solar cells have surpassed 26%, further advancement of device performance is constrained by the large photovoltage deficit in wide-band-gap perovskite subcells. Meanwhile, state-of-the-art charge recombination layers incorporate an additional thin metal film (Au or Ag), which not only complexes device fabrication but induces parasitic optical losses. Here, we first fabricate efficient wide-band-gap perovskite solar cells (PSCs) with by suppressing nonradiative losses both in bulk material and at interface. The prepared PSCs with a band gap of 1.71 eV yield an impressive open-circuit voltage (VOC) of 1.27 V, giving a small VOC deficit of 0.44 V and an efficiency of 20.8%. We then fabricate monolithic all-printed perovskite tandem devices by constructing a metal-free recombination layer, which yields an efficiency of 23.65% and a high VOC of 2.05 V. This work offers a simple yet effective charge recombination architecture for advancing the performance of all-perovskite tandem devices.

中文翻译:

抑制宽带隙钙钛矿中的非辐射损失提供了具有无金属电荷复合层的高效且可印刷的全钙钛矿串联太阳能电池

尽管全钙钛矿串联太阳能电池的效率已超过 26%,但器件性能的进一步提升受到宽带隙钙钛矿子电池中较大光电压不足的限制。同时,最先进的电荷复合层包含额外的金属薄膜(Au 或 Ag),这不仅使器件制造变得复杂,而且会引起寄生光学损耗。在这里,我们首先通过抑制散装材料和界面处的非辐射损失来制造高效的宽带隙钙钛矿太阳能电池 (PSC)。制备的带隙为 1.71 eV 的 PSC 产生令人印象深刻的 1.27 V 开路电压 ( V OC ),从而提供较小的V OC0.44 V 的赤字和 20.8% 的效率。然后,我们通过构建无金属复合层来制造单片全印刷钙钛矿串联器件,其效率为 23.65%,V OC为 2.05 V。这项工作提供了一种简单而有效的电荷复合架构,用于提高性能全钙钛矿串联装置。
更新日期:2022-12-13
down
wechat
bug