有效的三元有机太阳能电池,通过基于B-N的聚合物供体重组抑制非辐射
Shuting Pang1, Wanyuan Deng2, Langheng Pan2
1Institute of Carbon Neutrality and New Energy, School of Electronics and Information Engineering, Hangzhou Dianzi University, Hangzhou 310018, China.
iScience
|January 27, 2025
概括
研究人员使用B-N聚合物供体的三元策略改进了有机太阳能电池 (OSC). 这减少了能量损失 (Eloss),并实现了该设备类型的18.95%功率转换效率 (PCE) 的记录.
科学领域:
- 有机电子学有机电子学
- 太阳能光伏发电是如何实现的
- 材料科学是一种材料科学.
背景情况:
- 有机太阳能电池 (OSC) 发展迅速,但由于能量损失 (Eloss) 而面临限制.
- 尽量减少能源损失对于提高OSC光伏性能至关重要.
- 三元策略提供了一种精确控制能源损耗和效率的方法.
研究的目的:
- 为了研究在三元有机太阳能电池中使用B-N基聚合物供体.
- 为了减少能源损失 (Eloss) 和提高电力转换效率 (PCE) 的OSCs.
- 探索高性能OSC的新客户材料.
主要方法:
- 将B-N基聚合物供体 (PBNT-BDD) 纳入PM6:L8-BO二元系统,以创建三元OSC.
- 优化设备形态的优化.
- 光伏性能的表征,包括开放电路电压 (Voc),短路电流密度 (Jsc) 和能量损耗 (Eloss).
主要成果:
- 三元OSC装置实现了18.95%的功率转换效率 (PCE).
- 与二进制设备相比,三进制设备表现出较好的开通电压 (Voc) 和短路密度 (Jsc).
- 在三元器件中观察到减少能量损失 (Eloss),归因于抑制电荷转移状态重组的BN聚合物供体的特性.
结论:
- 基于BN的聚合物供体PBNT-BDD有效地减少了三元OSC中的能量损失.
- 开发的三元OSC显示了B-N基于材料的设备的创纪录高的PCE.
- 这项研究扩大了客户材料的范围,以实现高性能有机太阳能电池.
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