A universal hole transport layer for efficient organic solar cells processed by blade coating

IF 2.7 4区工程技术 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Organic Electronics Pub Date : 2024-08-05 DOI:10.1016/j.orgel.2024.107104

Zijian Li, Hui Huang, Xianghui Zeng, Baoshen Deng, Chengsheng Li, Chuanlin Gao, Guangye Zhang, Shunpu Li, Chen Xie

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Abstract

Doctor-blade coating technology is a roll-to-roll compatible high-throughput thin film fabrication route. In this work, doctor-blading was applied for fabricating organic solar cells (OSCs) using a polyoxometalates material phosphomolybdic acid (PMA) as a hole transport layer (HTL). Compared to PEDOT:PSS, PMA-based devices demonstrate lower trap-assisted recombination, higher hole mobility, prolonged charge carrier lifetime and faster charge collection. With PM6:Y6 as active layer, PMA-based device delivered a high power conversion efficiency (PCE) of 17.79 % with a boosted short-circuit current density (J_SC) value of 28.08 mA/cm², which is one of the best performances for PM6:Y6-based solar cells through doctor-blading process. In addition, the performance improvement was observed in both conventional and inverted structured devices with various donor: acceptor combinations. These results indicate the high universality of PMA for printable processing and its prospect in preparation of the industrial production of OSCs.

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用于通过叶片涂层加工的高效有机太阳能电池的通用空穴传输层

刮刀涂层技术是一种卷对卷兼容的高通量薄膜制造工艺。在这项工作中，刮刀涂布技术被应用于制造有机太阳能电池（OSCs），使用聚氧化金属酸盐材料磷钼酸（PMA）作为空穴传输层（HTL）。与 PEDOT:PSS 相比，基于 PMA 的器件具有更低的陷阱辅助重组、更高的空穴迁移率、更长的电荷载流子寿命和更快的电荷收集速度。以 PM6:Y6 为活性层，基于 PMA 的器件实现了 17.79% 的高功率转换效率（PCE），短路电流密度（J）提升至 28.08 mA/cm，是通过博士掺杂工艺制备的基于 PM6:Y6 的太阳能电池中性能最好的器件之一。此外，在传统结构和倒置结构器件中，采用不同的供体：受体组合，都能观察到性能的提高。这些结果表明，PMA 在可印刷加工方面具有很高的通用性，在为 OSC 的工业化生产做准备方面具有广阔的前景。

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来源期刊

Organic Electronics 工程技术-材料科学：综合

CiteScore

6.60

自引率

6.20%

发文量

238

审稿时长

44 days

期刊介绍： Organic Electronics is a journal whose primary interdisciplinary focus is on materials and phenomena related to organic devices such as light emitting diodes, thin film transistors, photovoltaic cells, sensors, memories, etc. Papers suitable for publication in this journal cover such topics as photoconductive and electronic properties of organic materials, thin film structures and characterization in the context of organic devices, charge and exciton transport, organic electronic and optoelectronic devices.