From 20% Single-Junction Organic Photovoltaic to 26% Perovskite/Organic Tandem Solar Cells: Self-Assembled Hole Transport Molecules Matters

IF 32.4 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Energy & Environmental Science Pub Date : 2025-01-23 DOI:10.1039/d4ee05533k

Xiaokang Sun, Fei Wang, Guo Yang, Xiaoman Ding, Jie Lv, Yonggui Sun, Taomiao Wang, Chuanlin Gao, Guangye Zhang, Wenzhu Liu, Xiang Xu, Soumitra Satapathi, Xiaoping Ouyang, Annie Ng, Long Ye, Mingjian Yuan, Hongyu Zhang, Hanlin Hu

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引用次数: 0

Abstract

Achieving high efficiency in both single-junction organic solar cells (OSCs) and tandem solar cells (TSCs) significantly relies on hole transport layers constructed from self-assembled molecules (SAM) with a well-ordered, face-on alignment. In this study, we enhanced the ordered stacking of SAM layer by leveraging the interaction between the π-conjugated backbone of SAM and volatile solid additives with opposing electrostatic potentials. This approach induced a highly ordered stacking of SAM layer, as confirmed by the presence of multiple X-ray scattering peaks and an increased Herman orientation factor from 0.402 to 0.726 after the evaporation of solid additives. This optimization not only strengthened hole transport properties but also positively influenced the film formation kinetics of the upper active layer, improving morphology and vertical phase separation. As a result, we achieved a notable power conversion efficiency (PCE) of 20.06% (certiﬁed 19.24%) in PM6:BTP-eC9 binary OSCs, with a further breakthrough PCE of 26.09% in perovskite-organic tandem solar cells (TSCs).

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从20%的单结有机光伏电池到26%的钙钛矿/有机串联太阳能电池：自组装空穴传输分子的问题

在单结有机太阳能电池（OSCs）和串联太阳能电池（tsc）中实现高效率在很大程度上依赖于由有序的、面对排列的自组装分子（SAM）构建的空穴传输层。在本研究中，我们利用SAM的π共轭主链与具有相反静电势的挥发性固体添加剂之间的相互作用，增强了SAM层的有序堆叠。这种方法导致了高度有序的SAM层堆积，证实了这一点：存在多个x射线散射峰，固体添加剂蒸发后Herman取向因子从0.402增加到0.726。这种优化不仅增强了空穴输运性能，而且对上部活性层的成膜动力学产生了积极影响，改善了形貌和垂直相分离。结果，我们在PM6:BTP-eC9二元osc中实现了20.06%（认证为19.24%）的显著功率转换效率（PCE），在钙钛矿-有机串联太阳能电池（tsc）中进一步突破了26.09%的PCE。

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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来源期刊

Energy & Environmental Science 化学-工程：化工

CiteScore

50.50

自引率

2.20%

发文量

349

审稿时长

2.2 months

期刊介绍： Energy & Environmental Science, a peer-reviewed scientific journal, publishes original research and review articles covering interdisciplinary topics in the (bio)chemical and (bio)physical sciences, as well as chemical engineering disciplines. Published monthly by the Royal Society of Chemistry (RSC), a not-for-profit publisher, Energy & Environmental Science is recognized as a leading journal. It boasts an impressive impact factor of 8.500 as of 2009, ranking 8th among 140 journals in the category "Chemistry, Multidisciplinary," second among 71 journals in "Energy & Fuels," second among 128 journals in "Engineering, Chemical," and first among 181 scientific journals in "Environmental Sciences." Energy & Environmental Science publishes various types of articles, including Research Papers (original scientific work), Review Articles, Perspectives, and Minireviews (feature review-type articles of broad interest), Communications (original scientific work of an urgent nature), Opinions (personal, often speculative viewpoints or hypotheses on current topics), and Analysis Articles (in-depth examination of energy-related issues).