强大的吸收电子的分子在埋面接口促进π-π堆积和电荷转移复合体,并使一个具有1.2V开放电路电压的倒置PSC成为可能
Jiexi Pan1, Jihuai Wu1, Weichun Pan1
1Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Fujian Key Laboratory of Photoelectric Functional Materials, College of Materials Science and Engineering, Huaqiao University, Xiamen, Fujian, 361021, China.
Angewandte Chemie (International ed. in English)
|September 19, 2025
概括
使用F4TCNQ的新型分子桥梁策略通过改善接口接触和被动缺陷来提高矿太阳能电池性能. 这导致矿太阳能电池 (PSC) 的效率和稳定性更高.
科学领域:
- 材料科学 材料科学 材料科学
- 可再生能源可再生能源是可再生能源.
- 纳米技术 纳米技术
背景情况:
- 矿太阳能电池 (PSC) 在孔输送层 (HTL) 和矿活性层 (PAL) 之间的接口工程方面面临挑战.
- 优化此接口对于有效的电荷提取和设备稳定性至关重要.
研究的目的:
- 改进在倒置PSC中HTL和PAL之间的接口匹配.
- 通过分子桥梁来提高矿太阳能电池的性能和稳定性.
主要方法:
- 引入2,3,5,6-四-7,7,8,8-四亚诺二甲 (F4TCNQ) 作为自组装单层 (SAM) 和矿活性层之间的分子桥梁.
- 介面性质的表征,矿结晶,缺陷被动化和电荷转移动态.
- 优化逆矿太阳能电池的制造和测试.
主要成果:
- F4TCNQ形成电荷转移复合体,使接口电位均质化,并将矿颗粒大小增加到0.88微米.
- F4TCNQ使缺陷被动并抑制离子迁移,从而减少了孔提取屏障 (0.12 eV).
- 优化的设备实现了25.91%的冠军功率转换效率,并在1000小时后保持了91%的效率.
结论:
- 使用F4TCNQ的分子桥梁是高性能矿太阳能电池的可扩展策略.
- 该方法显著提高了接口特性,从而提高了效率和长期稳定性.
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