通过共生自组装分子重构空穴传输层,实现高性能反相包晶石太阳能电池。

IF 13 2区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Small Pub Date : 2024-11-17 DOI:10.1002/smll.202408314
Weihong Liu, Yue Zang, Yibo Tu, Yida Wang, Zhikang Zhu, Chenyang Zhu, Wensheng Yan
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引用次数: 0

摘要

调整空穴传输层(HTL)以优化其与过氧化物的界面,对于最大限度地减少界面重组、提高载流子萃取以及实现高效稳定的倒置过氧化物太阳能电池(PSCs)至关重要。然而,作为一种常用的热吸附层(HTL),[2-(3,6-二甲氧基-9H-咔唑-9-基)乙基]膦酸(MeO-2PACz)的自组装层(SAM)在沉积过程中往往会形成团簇和胶束,导致对 ITO 基底的覆盖不足。这里采用了一种 Co-SAM 策略,即在 MeO-2PACz 中加入 4-巯基苯甲酸(SBA)和 4-三氟甲基苯甲酸(TBA)作为添加剂,以制造基于 Co-SAM 的 HTL。引入的添加剂可与 MeO-2PACz 相互作用,促进团簇分散,从而更好地沉积在 ITO 上,提高 HTL 的覆盖率。此外,Co-SAM 与包晶具有优异的能级一致性,可增强界面接触,提高载流子萃取效率,并促进底部包晶晶粒的生长。因此,基于 MeO-2PACz+TBA 的 Co-SAM HTL 的反相器件的功率转换效率 (PCE) 从 21.34% 显著提高到 23.31%,同时在 1 太阳光下连续工作时保持了≈90% 的初始效率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Reconstruction of Hole Transport Layer via Co-Self-Assembled Molecules for High-Performance Inverted Perovskite Solar Cells.

Adjusting the hole transport layer (HTL) to optimize its interface with perovskite is crucial for minimizing interface recombination, enhancing carrier extraction, and achieving efficient and stable inverted perovskite solar cells (PSCs). However, as a commonly used HTL, the self-assemble layer (SAM) of [2-(3,6-dimethoxy-9H-carbazol-9-yl)ethyl] phosphonic acid (MeO-2PACz) tends to form clusters and micelles during the deposition process, leading to inadequate coverage of the ITO substrate. Here, a Co-SAM strategy is employed by incorporating 4-mercaptobenzoic acid (SBA) and 4-trifluoromethyl benzoic acid (TBA) as additives into MeO-2PACz to fabricate a Co-SAM-based HTL. The introduced additive can interact with MeO-2PACz, facilitating cluster dispersion and thereby enabling better deposition on ITO for improved HTL coverage. Moreover, Co-SAM exhibits superior energy level alignment with perovskite to enhance interfacial contact and improve carrier extraction efficiency as well as promote growth of bottom perovskite grains. As a result, an impressive increase of the power conversion efficiency (PCE) from 21.34% to 23.31% is achieved in the inverted device based on the Co-SAM HTL of MeO-2PACz+TBA while maintaining ≈90% of its initial efficiency under continuous operation at 1-sun.

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来源期刊
Small
Small 工程技术-材料科学:综合
CiteScore
17.70
自引率
3.80%
发文量
1830
审稿时长
2.1 months
期刊介绍: Small serves as an exceptional platform for both experimental and theoretical studies in fundamental and applied interdisciplinary research at the nano- and microscale. The journal offers a compelling mix of peer-reviewed Research Articles, Reviews, Perspectives, and Comments. With a remarkable 2022 Journal Impact Factor of 13.3 (Journal Citation Reports from Clarivate Analytics, 2023), Small remains among the top multidisciplinary journals, covering a wide range of topics at the interface of materials science, chemistry, physics, engineering, medicine, and biology. Small's readership includes biochemists, biologists, biomedical scientists, chemists, engineers, information technologists, materials scientists, physicists, and theoreticians alike.
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