Self-Assembling Hole-Transport Material Incorporating Biphosphonic Acid for Dual-Defect Passivation in NiOx-Based Perovskite Solar Cells

IF 12.7 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

ACS Central Science Pub Date : 2024-11-05 DOI:10.1039/d4ta05776g

Ting Su, Wenjun Liu, Hao Xu, Huilong Chen, Kin Long Wong, Wanru Zhang, Qingting Su, Tongxin Wang, Shanlei Xu, Xingting Liu, Weiwei Lv, Renyong Geng, Jun Yin, Xin Song

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引用次数: 0

Abstract

The efficiency and stability of nickel oxide (NiOx)-based perovskite solar cells (PSCs) are critically hindered by defects and suboptimal charge transfer at the interface between perovskite crystals and the NiOx layer. In this study, we introduce a self-assembled hole transport material, D-3PACz, featuring bisphosphonic acid anchoring groups, to address these challenges. D-3PACz is proved to be effective in improving the surface properties of nickel oxide, optimizing the energy level alignment, and enhancing hole extraction capability. Meanwhile, the robust interaction between phosphonic acid and the perovskite layer enables D-3PACz to effectively direct the growth of perovskite crystals. These findings result in devices exhibiting reduced non-radiative recombination losses, lower defect-state densities, and enhanced hole extraction performance, culminating in a comprehensive improvement in device parameters. Excitingly, the D-3PACz based devices obtain a champion PCE of 23.8% with elevated stability. Our work presents the superiority of the proposed D-3PACz material for efficient and stable PSCs.

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掺入双膦酸的自组装空穴传输材料用于镍氧化物基包晶石太阳能电池的双缺陷钝化

基于氧化镍（NiOx）的过氧化物太阳能电池（PSCs）的效率和稳定性受到过氧化物晶体和 NiOx 层之间界面缺陷和电荷转移不理想的严重影响。在本研究中，我们引入了一种具有双膦酸锚定基团的自组装空穴传输材料 D-3PACz，以应对这些挑战。事实证明，D-3PACz 能有效改善氧化镍的表面性质，优化能级排列，提高空穴萃取能力。同时，膦酸与包晶层之间的强相互作用使 D-3PACz 能够有效地引导包晶晶体的生长。这些发现使器件减少了非辐射重组损耗，降低了缺陷态密度，提高了空穴萃取性能，从而全面改善了器件参数。令人兴奋的是，基于 D-3PACz 的器件获得了 23.8% 的冠军 PCE，而且稳定性更高。我们的工作展示了所提出的 D-3PACz 材料在高效稳定的 PSC 方面的优越性。

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来源期刊

ACS Central Science Chemical Engineering-General Chemical Engineering

CiteScore

25.50

自引率

0.50%

发文量

194

审稿时长

10 weeks

期刊介绍： ACS Central Science publishes significant primary reports on research in chemistry and allied fields where chemical approaches are pivotal. As the first fully open-access journal by the American Chemical Society, it covers compelling and important contributions to the broad chemistry and scientific community. "Central science," a term popularized nearly 40 years ago, emphasizes chemistry's central role in connecting physical and life sciences, and fundamental sciences with applied disciplines like medicine and engineering. The journal focuses on exceptional quality articles, addressing advances in fundamental chemistry and interdisciplinary research.