Stable Organic Solar Cells Enabled by Simultaneous Hole and Electron Interlayer Engineering

IF 13 2区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Energy & Environmental Materials Pub Date : 2024-05-11 DOI:10.1002/eem2.12712
Wisnu Tantyo Hadmojo, Furkan H. Isikgor, Yuanbao Lin, Zhaoheng Ling, Qiao He, Hendrik Faber, Emre Yengel, Roshan Ali, Abdus Samad, Ryanda Enggar Anugrah Ardhi, Sang Young Jeong, Han Young Woo, Udo Schwingenschlögl, Martin Heeney, Thomas D. Anthopoulos
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Abstract

The development of high-performance organic solar cells (OSCs) with high operational stability is essential to accelerate their commercialization. Unfortunately, our understanding of the origin of instabilities in state-of-the-art OSCs based on bulk heterojunction (BHJ) featuring non-fullerene acceptors (NFAs) remains limited. Herein, we developed NFA-based OSCs using different charge extraction interlayer materials and studied their storage, thermal, and operational stabilities. Despite the high power conversion efficiency (PCE) of the OSCs (17.54%), we found that cells featuring self-assembled monolayers (SAMs) as hole-extraction interlayers exhibited poor stability. The time required for these OSCs to reach 80% of their initial performance (T80) was only 6 h under continuous thermal stress at 85 °C in a nitrogen atmosphere and 1 h under maximum power point tracking (MPPT) in a vacuum. Inserting MoOx between ITO and SAM enhanced the T80 to 50 and ~15 h after the thermal and operational stability tests, respectively, while maintaining a PCE of 16.9%. Replacing the organic PDINN electron transport layer with ZnO NPs further enhances the cells' thermal and operational stability, boosting the T80 to 1000 and 170 h, respectively. Our work reveals the synergistic roles of charge-selective interlayers and device architecture in developing efficient and stable OSCs.

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通过同时进行空穴和电子层间工程实现稳定的有机太阳能电池
开发具有高运行稳定性的高性能有机太阳能电池(OSC)对于加速其商业化至关重要。遗憾的是,我们对基于以非富勒烯受体(NFA)为特征的体异质结(BHJ)的最先进有机太阳能电池的不稳定性起源的了解仍然有限。在此,我们使用不同的电荷萃取层间材料开发了基于 NFA 的 OSC,并研究了它们的存储、热和工作稳定性。尽管这些 OSCs 的功率转换效率(PCE)很高(17.54%),但我们发现采用自组装单层(SAM)作为空穴萃取中间层的电池稳定性很差。这些 OSCs 在氮气环境中 85 °C 的持续热应力下达到其初始性能 80% 所需的时间(T80)仅为 6 小时,而在真空环境中的最大功率点跟踪(MPPT)下仅为 1 小时。在 ITO 和 SAM 之间插入 MoOx 后,热稳定性和工作稳定性测试后的 T80 分别提高到 50 小时和 15 小时,同时 PCE 保持在 16.9%。用氧化锌氮化物取代有机 PDINN 电子传输层进一步提高了电池的热稳定性和工作稳定性,使 T80 分别提高到 1000 小时和 170 小时。我们的工作揭示了电荷选择性夹层和器件结构在开发高效、稳定的 OSC 方面的协同作用。
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来源期刊
Energy & Environmental Materials
Energy & Environmental Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-
CiteScore
17.60
自引率
6.00%
发文量
66
期刊介绍: Energy & Environmental Materials (EEM) is an international journal published by Zhengzhou University in collaboration with John Wiley & Sons, Inc. The journal aims to publish high quality research related to materials for energy harvesting, conversion, storage, and transport, as well as for creating a cleaner environment. EEM welcomes research work of significant general interest that has a high impact on society-relevant technological advances. The scope of the journal is intentionally broad, recognizing the complexity of issues and challenges related to energy and environmental materials. Therefore, interdisciplinary work across basic science and engineering disciplines is particularly encouraged. The areas covered by the journal include, but are not limited to, materials and composites for photovoltaics and photoelectrochemistry, bioprocessing, batteries, fuel cells, supercapacitors, clean air, and devices with multifunctionality. The readership of the journal includes chemical, physical, biological, materials, and environmental scientists and engineers from academia, industry, and policy-making.
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