All-interfaces lead leakage blocking and defect healing for perovskite solar cells

IF 16.8 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nano Energy Pub Date : 2025-05-28 DOI:10.1016/j.nanoen.2025.111195

Yusheng Cao, Lele Wu, Yuanyuan Zhao, Gege Zhang, Qiyao Guo, Jialong Duan, Jie Dou, Qiang Zhang, Yan Zhang, Chongwen Li, Qunwei Tang

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引用次数: 0

Abstract

Perovskite solar cells (PSCs) have been rapidly advancing in efficiency and stability in recent years, moving towards commercialization. However, their practical application has been hindered by the toxicity of lead ions (Pb²⁺). The leakage of Pb can from various interfaces. In this study, we develop an all-interfaces engineering strategy utilizing polyethyleneimine (PEI) and metal-organic frameworks (MOFs): Co-bpdc (bpdc=4,4’-biphenyldicarboxylate) to block lead leakage across all interfaces. PEI is applied at the buried interface, facilitating heterogeneous nucleation and larger grain growth. As a competitor for residual solvents, PEI also minimizes voids and captures escaping Pb²⁺. Co-bpdc reacts with Pb²⁺ ions to hinder their escape and passivate top interface defects. This approach resulted in boosted power conversion efficiency (PCE), reaching 11.17% for carbon-based CsPbBr₃ device. Additionally, this strategy significantly reduced the lead leakage rate and enhanced the durability of PSCs.

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钙钛矿太阳能电池的全界面导联漏阻及缺陷修复

近年来，钙钛矿太阳能电池（PSCs）在效率和稳定性方面取得了长足的进步，并逐步走向商业化。然而，它们的实际应用受到铅离子（Pb2+）毒性的阻碍。铅可以从各个界面泄漏。在这项研究中，我们开发了一种全界面工程策略，利用聚乙烯亚胺（PEI）和金属有机框架（mof）： Co-bpdc （bpdc=4,4 ' -联苯二羧酸盐）来阻止所有界面上的铅泄漏。PEI作用于埋藏界面，有利于非均质形核，晶粒长大较大。作为残余溶剂的竞争对手，PEI还可以最大限度地减少空隙并捕获逸出的Pb2+。Co-bpdc与Pb2+离子反应，阻止其逸出，钝化顶部界面缺陷。这种方法提高了碳基CsPbBr3器件的功率转换效率（PCE），达到11.17%。此外，该策略显著降低了铅漏率，提高了psc的耐用性。

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来源期刊

Nano Energy CHEMISTRY, PHYSICAL-NANOSCIENCE & NANOTECHNOLOGY

CiteScore

30.30

自引率

7.40%

发文量

1207

审稿时长

23 days

期刊介绍： Nano Energy is a multidisciplinary, rapid-publication forum of original peer-reviewed contributions on the science and engineering of nanomaterials and nanodevices used in all forms of energy harvesting, conversion, storage, utilization and policy. Through its mixture of articles, reviews, communications, research news, and information on key developments, Nano Energy provides a comprehensive coverage of this exciting and dynamic field which joins nanoscience and nanotechnology with energy science. The journal is relevant to all those who are interested in nanomaterials solutions to the energy problem. Nano Energy publishes original experimental and theoretical research on all aspects of energy-related research which utilizes nanomaterials and nanotechnology. Manuscripts of four types are considered: review articles which inform readers of the latest research and advances in energy science; rapid communications which feature exciting research breakthroughs in the field; full-length articles which report comprehensive research developments; and news and opinions which comment on topical issues or express views on the developments in related fields.