抑制界面光降解以实现高效稳定的全钙钛矿串联太阳能电池

IF 16.1 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Angewandte Chemie International Edition Pub Date : 2025-05-24 DOI:10.1002/anie.202424825

Zhuojia Lin, Jianwei Chen, Kezhou Fan, Jicheng Yi, Honggang Chen, Shibing Zou, Hongyu Min, Yitong Xu, Man Yu Lam, Sergeev A. Aleksandr, Kam Sing Wong, He Yan, Keyou Yan

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引用次数: 0

摘要

所有钙钛矿串联太阳能电池（PTSCs）都有望克服单结钙钛矿太阳能电池（PSCs）的Shockley - Queisser极限。然而，由于广泛的薄膜缺陷、界面退化和相偏析，宽带隙（WBG）亚电池遭受较大的光电压损失和器件不稳定性。通过引入聚咔唑膦酸，采用聚合物多齿锚定（PMDA）策略设计了底部界面，抑制了相偏析。多个重复磷酸基在NiOx上的增强和均匀锚定显著优化了底部界面，抑制了不利的界面反应，从而减轻了WBG钙钛矿的相偏析。结果，PMDA修饰的WBG PSCs表现出比控制器件更高的功率转换效率（PCE）（19.84%对18.18%），以及更好的器件光稳定性（T80 = 1200对500小时）。与窄带隙（NBG） PSCs结合，PMDA修饰的PSCs的PCE高达28.51%，器件运行光稳定性超过700小时（T80）。

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Suppressing the Interface Photodegradation Towards Efficient and Stable All Perovskite Tandem Solar Cells

All perovskite tandem solar cells (PTSCs) were expected to overcome the Shockley‐Queisser limit of single‐junction perovskite solar cells (PSCs). Nevertheless, wide bandgap (WBG) subcells suffer from large photovoltage losses and device instability due to extensive film defect, interfacial degradation and phase segregation. Herein, a polymeric multi‐dentate anchoring (PMDA) strategy by introducing poly(carbazole phosphonic acid) was employed to engineer the bottom interface and suppress phase segregation. The reinforced and homogeneous anchorage by multiple repeat phosphonic acid groups onto NiOx significantly optimise the bottom interface, suppress unfavourable interfacial reactions and thus alleviate phase segregation of WBG perovskite. As a result, the PMDA‐modified WBG PSCs showed higher power conversion efficiency (PCE) than the control device (19.84% versus 18.18%), along with better device photostability (T80 = 1200 versus 500 hours). Coupled with narrow bandgap (NBG) PSCs, the PMDA‐modified PTSCs reached a PCE of up to 28.51% with device operation photostability over 700 hours (T80).

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来源期刊

Angewandte Chemie International Edition 化学-化学综合

CiteScore

26.60

自引率

6.60%

发文量

3549

审稿时长

1.5 months

期刊介绍： Angewandte Chemie, a journal of the German Chemical Society (GDCh), maintains a leading position among scholarly journals in general chemistry with an impressive Impact Factor of 16.6 (2022 Journal Citation Reports, Clarivate, 2023). Published weekly in a reader-friendly format, it features new articles almost every day. Established in 1887, Angewandte Chemie is a prominent chemistry journal, offering a dynamic blend of Review-type articles, Highlights, Communications, and Research Articles on a weekly basis, making it unique in the field.