利用具有多个d-pπ键的双硫尼胺来构建有机太阳能电池的中间层
Yanhui Fan1, Junjie Wen1, Huanhuan Yang1
1State Key Laboratory of Chemical Resource Engineering Beijing Advanced Innovation Center for Soft Matter Science and Engineering College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China.
新的二硫胺 (BSI) 材料作为高效有机太阳能电池 (OSC) 的多功能阴极介层. 这些材料提高了设备的稳定性和性能,实现了高功率转换效率.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 太阳能光伏发电是如何实现的
背景情况:
- 有机太阳能电池 (OSC) 需要高效的阴极介层材料 (CIM) 来优化电荷提取和设备稳定性.
- 传统的CIM通常面临处理能力,能源水平对齐和长期运行稳定性的局限性.
- 为CIM开发新的构建块对于提高OSC绩效至关重要.
研究的目的:
- 引入二硫胺 (BSI) 作为OSC多功能CIM的新,通用和可扩展的构建块.
- 综合和描述基于BSI的CIM,评估其性能以提高OSC性能.
- 展示基于BSI的CIM在OSC实现高效率和运营稳定的潜力.
主要方法:
- 综合了一系列使用BSI构建块的多功能CIM.
- 描述CIM属性,包括酒精的可加工性,工作功能,能量水平,导电性和结晶性.
- 在OSC设备的制造和测试中,采用开发的基于BSI的CIM,具有不同的活性层.
- 在持续照明下的性能评估和厚度不敏感性的评估.
主要成果:
- 一个说明性的CIM,BSIz-TT-PDI,表现出高导电性 (>5×10−3 S/cm),可调节的工作功能和优化的能量水平.
- 基于BSIz-TT-PDI的OSC在PM6:Y6活性层下实现了18.08%的功率转换效率.
- 设备表现出卓越的操作稳定性,在持续照明1100小时后保持84%的性能.
- 该CIM显示了显著的厚度不敏感性 (5-90纳米) 和与各种活性层的兼容性,导致PM6:BTP-eC9:L8-BO活性层的记录效率为19.80%.
结论:
- 双硫胺 (BSI) 是一个非常有效的构建块,用于为OSCs开发先进的CIM.
- 基于BSI的CIM能够实现精确的接口工程,从而显著提高OSC的效率和稳定性.
- 这项工作开创了对厚度不敏感的CIM,为强大和高性能有机太阳能电池提供了一条道路.
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