当地结构诱导的选择性相互作用使高性能和无燃烧的有机光伏技术成为可能
Baobing Fan1, Huanhuan Gao2,3, Liyang Yu4
1Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong, 999077, China.
Angewandte Chemie (International ed. in English)
|October 30, 2024
概括
研究人员开发了一种新方法来控制有机光伏 (OPV) 的寡合受体 (OAs) 中的分子几何结构. 这一策略将设备效率提高到20.1%,并提高稳定性,尽量减少随时间的性能损失.
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:
- 寡合体受体 (OAs) 在有机光伏 (OPV) 中提供了单合体和聚合体受体之间的平衡.
- 控制OA中的分子扭曲对于设备的性能和稳定性至关重要.
- 现有的控制扭曲的方法是复杂的,涉及分子结构的复杂调整.
研究的目的:
- 开发一个简单的策略来控制OAs的几何扭曲.
- 研究分子扭曲和分子间相互作用对OPV性能的影响.
- 通过分子设计实现OPV设备的高效率和稳定性.
主要方法:
- 通过替换alkoxy侧链来合理控制OA几何.
- 分子扭曲和非结合接触的综合影响的阐释.
- 采用复合材料间层策略,使用基替代自组装单层和多氧甲酸兴奋剂.
主要成果:
- 具有更强的自我相互作用的alkoxy-OA分子减轻了与宿主受体的相互作用.
- 观察到总受体的运动扩散和聚合减少.
- 实现了20.1%的令人印象深刻的功率转换效率.
- 对身体衰老的燃烧损失可以忽略不计.
结论:
- 通过控制分子几何学来调整选择性相互作用是高性能OPV的有效策略.
- 开发的氧侧链替代方法可以精确控制OA几何.
- 这项研究为稳定,高效和无内燃的有机光伏设备铺平了道路.
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