High-Performance, Ambient-Processable Organic Solar Cells Achieved by Single Terpene-Based Entirely Eco-Friendly Process

IF 10.7 2区 材料科学 Q1 CHEMISTRY, PHYSICAL Journal of Materials Chemistry A Pub Date : 2024-11-13 DOI:10.1039/d4ta07223e
Hyerin Jeon, Jin-Woo Lee, Kihyun Bae, Tan Ngoc-Lan Phan, Chulhee Lim, Jaeyoung Choi, Cheng Wang, Seungjin Lee, Bumjoon Kim
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Abstract

Conventional processing solvents for organic electronics pose significant health/environmental risks, prompting the search for greener/safer alternatives. Herein, we develop organic solar cells (OSCs), processed from a single terpene solvent, eucalyptol (Eu), with almost no environmental hazards and toxicity. Notably, a record-high power conversion efficiency (PCE) of 15.1% is achieved without any additive, which is particularly significant given the low PCEs (0.1–3.0%) of previous OSCs using a single terpene. First, we design a small-molecule acceptor (MYBO) with optimized side-chains, offering sufficient solubility while maintaining excellent optoelectronic properties. Second, we develop a processing technique which controls the film-formation kinetics to independently tune the aggregation of polymer donor and MYBO. This enables the formation of well-developed MYBO crystallites embedded within interconnected polymer fibrillar structures. And, all the solution processing can be performed in air without using a glove box, thanks to the eco-friendly Eu process. The devices also exhibit excellent air-stability, retaining more than 92% of the initial PCE after 2300 hr in air. This work provides important guidelines for material designs and processing methods to achieve eco-friendly processed, high-performance OSCs.
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基于单萜的完全环保型工艺实现了高性能、可在环境中加工的有机太阳能电池
用于有机电子产品的传统加工溶剂对健康和环境构成了巨大的风险,这促使人们寻找更环保、更安全的替代品。在这里,我们开发出了用单一萜烯溶剂桉叶油醇(Eu)加工而成的有机太阳能电池(OSC),几乎没有环境危害和毒性。值得注意的是,在不使用任何添加剂的情况下,我们实现了 15.1% 的创纪录高功率转换效率(PCE),考虑到之前使用单一萜烯的有机太阳能电池的低 PCE(0.1-3.0%),这一点尤为重要。首先,我们设计了一种具有优化侧链的小分子受体(MYBO),在提供足够溶解度的同时保持了出色的光电特性。其次,我们开发了一种控制成膜动力学的加工技术,可独立调节聚合物供体和 MYBO 的聚集。这样就能在相互连接的聚合物纤维结构中形成发达的 MYBO 结晶。此外,由于采用了环保的 Eu 工艺,所有的溶液处理均可在空气中进行,无需使用手套箱。这些器件还表现出卓越的空气稳定性,在空气中放置 2300 小时后,仍能保持 92% 以上的初始 PCE。这项工作为材料设计和加工方法提供了重要指导,以实现环保加工的高性能 OSC。
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来源期刊
Journal of Materials Chemistry A
Journal of Materials Chemistry A CHEMISTRY, PHYSICAL-ENERGY & FUELS
CiteScore
19.50
自引率
5.00%
发文量
1892
审稿时长
1.5 months
期刊介绍: The Journal of Materials Chemistry A, B & C covers a wide range of high-quality studies in the field of materials chemistry, with each section focusing on specific applications of the materials studied. Journal of Materials Chemistry A emphasizes applications in energy and sustainability, including topics such as artificial photosynthesis, batteries, and fuel cells. Journal of Materials Chemistry B focuses on applications in biology and medicine, while Journal of Materials Chemistry C covers applications in optical, magnetic, and electronic devices. Example topic areas within the scope of Journal of Materials Chemistry A include catalysis, green/sustainable materials, sensors, and water treatment, among others.
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