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钙钛矿吸收体的成分工程助力高效织构化单片钙钛矿/硅异质结串联太阳能电池

Composition engineering of perovskite absorber assisted efficient textured monolithic perovskite/silicon heterojunction tandem solar cells.

作者信息

He Yongcai, Tang Zeguo, He Bo, Han Changbao, Ding Lei, Gu Xiaobing, Zhang Yongzhe, Yan Hui, Xu Xixiang

机构信息

Faculty of Materials and Manufacturing, Faculty of Information Technology, Beijing University of Technology Beijing 100124 China.

Hanergy Chengdu R&D Center Chengdu Sichuan 610200 China.

出版信息

RSC Adv. 2023 Mar 9;13(12):7886-7896. doi: 10.1039/d2ra05481g. eCollection 2023 Mar 8.

DOI:10.1039/d2ra05481g
PMID:36909745
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9996628/
Abstract

A two-terminal (2T) perovskite/silicon heterojunction tandem solar cell (PVSK/SHJ) is considered one of the most promising candidates for next-generation photovoltaics with the possibility of achieving a power conversion efficiency (PCE) exceeding 30% at low production cost. However, the current mismatch and voltage loss have seriously decreased the performance of 2T PVSK/SHJ tandem solar cells. Here, we report the composition engineering for perovskite top cells to prepare a high performance 2T tandem cell by tuning CsBr co-evaporating rates and increasing concentrations of FAI/FABr solutions. We show that the variation in composition for the perovskite absorber effectively optimized the band gap and diminished the defects of the top cell. Our investigations reveal that the current mismatch of sub-cells was carefully tuned by introducing CsBr at varied co-evaporating rates and the voltage loss was decreased by increasing concentrations of FAI/FABr solutions. Thus, we achieved a PCE of 23.22% in two-terminal monolithic tandems with an area of 1.2 cm by tuning the composition of the perovskite absorber.

摘要

双端（2T）钙钛矿/硅异质结串联太阳能电池（PVSK/SHJ）被认为是下一代光伏领域最具潜力的候选者之一，有望以较低的生产成本实现超过30%的功率转换效率（PCE）。然而，当前的电流失配和电压损失严重降低了2T PVSK/SHJ串联太阳能电池的性能。在此，我们报告了通过调整CsBr共蒸发速率和增加FAI/FABr溶液浓度来制备高性能2T串联电池的钙钛矿顶电池的成分工程。我们表明，钙钛矿吸收层成分的变化有效地优化了带隙并减少了顶电池的缺陷。我们的研究表明，通过以不同的共蒸发速率引入CsBr，仔细调整了子电池的电流失配，并且通过增加FAI/FABr溶液的浓度降低了电压损失。因此，通过调整钙钛矿吸收层的成分，我们在面积为1.2平方厘米的双端单片串联电池中实现了23.22%的PCE。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27ee/9996628/513c2155725f/d2ra05481g-f10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27ee/9996628/06766c141444/d2ra05481g-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27ee/9996628/bcf875e70b20/d2ra05481g-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27ee/9996628/1762f55bef40/d2ra05481g-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27ee/9996628/17c61b2657fd/d2ra05481g-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27ee/9996628/7bfe57443abb/d2ra05481g-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27ee/9996628/d89770f39f24/d2ra05481g-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27ee/9996628/a7fc75a8c256/d2ra05481g-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27ee/9996628/664d1cb1cf21/d2ra05481g-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27ee/9996628/196317b52479/d2ra05481g-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27ee/9996628/513c2155725f/d2ra05481g-f10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27ee/9996628/06766c141444/d2ra05481g-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27ee/9996628/bcf875e70b20/d2ra05481g-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27ee/9996628/1762f55bef40/d2ra05481g-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27ee/9996628/17c61b2657fd/d2ra05481g-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27ee/9996628/7bfe57443abb/d2ra05481g-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27ee/9996628/d89770f39f24/d2ra05481g-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27ee/9996628/a7fc75a8c256/d2ra05481g-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27ee/9996628/664d1cb1cf21/d2ra05481g-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27ee/9996628/196317b52479/d2ra05481g-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27ee/9996628/513c2155725f/d2ra05481g-f10.jpg

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