Efficient and Stable Hole-Transport Material for Solar Cells: from PEDOT:PSS to Carbon Nanotubes:PSS

IF 19.3 1区材料科学 Q1 CHEMISTRY, PHYSICAL

ACS Energy Letters Pub Date : 2025-02-27 DOI:10.1021/acsenergylett.4c0357510.1021/acsenergylett.4c03575

Yan Zhao, Qing Gao*, Dehua Yang, Xuning Zhang, Jing Guo, Yuke Ren, Xuan Chang, Yiming Xu, Xiaoyang Yuan, Lu Zhang, Kangping Zhang, Jianfang Dai, Beihai Yuan, Chunyang Su, Xin Fang, Dengyuan Song and Jianhui Chen*,

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Abstract

Hole transport materials (HTMs) are crucial for achieving high power conversion efficiency (PCE) of solar cells, which has facilitated the development of novel HTMs. In this work, an effective HTM with high conductivity, effective hole-transport, and high stability is fabricated by combining carbon nanotubes (CNT) and PSS. High-dispersive CNT in PSS solution forms a uniformly CNT network without doping, which shows a high conductivity due to carrier highways from the CNT ballistic transport mechanism. The conducting network is not affected by the humidity of the air and enhances the device stability. A synergistic effect of CNT and PSS gives the CNT:PSS composition film a high work function and a full-area passivation contact with Si. Finally, the highest PCE of 23.30% for organic:Si solar cells is achieved with a fill factor (FF) of 84.4%. These data demonstrate that the CNT:PSS film has excellent hole transport characteristics, which can also be applied to other photoelectric devices.

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空穴传输材料（HTM）是太阳能电池实现高功率转换效率（PCE）的关键，这促进了新型 HTM 的开发。在这项工作中，通过将碳纳米管（CNT）和聚苯硫醚（PSS）相结合，制备出了一种具有高导电性、有效空穴传输和高稳定性的高效 HTM。高分散性碳纳米管在 PSS 溶液中形成了一个均匀的碳纳米管网络，无需掺杂，由于碳纳米管弹道传输机制产生的载流子高速公路，该网络具有很高的导电性。这种导电网络不受空气湿度的影响，并能增强器件的稳定性。CNT 和 PSS 的协同效应使 CNT:PSS 组成的薄膜具有高功函数，并与硅形成全面积钝化接触。最后，有机硅太阳能电池的最高 PCE 为 23.30%，填充因子 (FF) 为 84.4%。这些数据表明，CNT:PSS 薄膜具有出色的空穴传输特性，也可应用于其他光电设备。

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

ACS Energy Letters Energy-Renewable Energy, Sustainability and the Environment

CiteScore

31.20

自引率

5.00%

发文量

469

审稿时长

1 months

期刊介绍： ACS Energy Letters is a monthly journal that publishes papers reporting new scientific advances in energy research. The journal focuses on topics that are of interest to scientists working in the fundamental and applied sciences. Rapid publication is a central criterion for acceptance, and the journal is known for its quick publication times, with an average of 4-6 weeks from submission to web publication in As Soon As Publishable format. ACS Energy Letters is ranked as the number one journal in the Web of Science Electrochemistry category. It also ranks within the top 10 journals for Physical Chemistry, Energy & Fuels, and Nanoscience & Nanotechnology. The journal offers several types of articles, including Letters, Energy Express, Perspectives, Reviews, Editorials, Viewpoints and Energy Focus. Additionally, authors have the option to submit videos that summarize or support the information presented in a Perspective or Review article, which can be highlighted on the journal's website. ACS Energy Letters is abstracted and indexed in Chemical Abstracts Service/SciFinder, EBSCO-summon, PubMed, Web of Science, Scopus and Portico.