半透明的有机光伏利用非富勒伦受体中的内在电荷产生
Anirudh Sharma1, Nicola Gasparini1, Anastasia Markina2
1Materials Science and Engineering Program, Physical Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia.
Advanced materials (Deerfield Beach, Fla.)
|December 15, 2023
概括
非富勒烯受体 (NFAs) 可以在没有捐赠器/受体接口的情况下产生电荷,由介电溶解驱动. 这一发现使得高效,热稳定的有机光伏 (OPV) 成为可能.
科学领域:
- 有机电子学有机电子学
- 材料科学是一种材料科学.
- 太阳能光伏发电是如何实现的
背景情况:
- 在有机半导体中,高效的电荷生成通常依赖于供体/受体异质连接来解离激子.
- 非富勒受体 (NFAs) 是现代有机光伏 (OPV) 的关键组成部分.
研究的目的:
- 调查NFA中的内在电荷生成机制.
- 探索NFA在没有传统的捐赠者/接受者接口的情况下产生费用的潜力.
- 使用NFAs开发高性能和稳定的有机光伏设备.
主要方法:
- 暂时吸收光谱被用来研究NFA中的兴奋状态动态.
- 使用IEICO-4F和PTB7-Th的捐赠剂稀释有机光伏 (OPV) 的制造和表征.
- 不透明和半透明的OPV的性能测试,包括功率转换效率和热稳定性评估.
主要成果:
- NFA,特别是IEICO-4F,可以通过介电溶解产生内在电荷,在没有捐赠/接受器接口的情况下解离激子.
- 加入少量供体聚合物 (PTB7-Th) 显著提高了整洁的NFA膜中的电荷生成.
- 输送器稀释的OPV实现了8.3%的功率转换效率,平均可见传导率 (AVT) 高达75%.
- 基于IEICO-4F的OPV显示出出色的热弹性,在700小时以上保持性能.
- 半透明模块实现了2.2%的光利用效率,AVT为63%.
结论:
- 通过介电溶解在NFA中产生内在电荷是一种可行的途径,可以有效地使激子解离.
- 供体稀释OPV的开发为高性能,稳定和半透明的太阳能电池提供了一个有前途的战略.
- 低频段间隙的NFA在增强OPV中的光电产生方面发挥着关键作用.
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