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压缩分子堆叠和抑制自我聚合在富勒烯输送层的高效和稳定的矿太阳能电池

Dan He¹, Jiahao Zhang¹, Xue-Yuan Gong²

¹State Key Laboratory of Powder Metallurgy, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P.R. China.

Angewandte Chemie (International ed. in English)

|March 22, 2025

概括

一种新的酸盐替代烯衍生物 (FuPE) 增强了矿太阳能电池 (PSC) 中的电子输送层 (ETL). 这一创新提高了效率超过26%,并通过减少重组来提高运营稳定性.

科学领域:

材料科学材料科学材料科学
太阳能光伏发电是如何实现的
有机电子有机电子

背景情况:

电子输送层 (ETL) 开发不足限制了逆转矿太阳能电池 (PSC) 的性能.
像PCBM这样的富勒烯衍生物是常见的ETL,但患有障碍,聚合和缺陷被动化不良.
这导致充电载体的重组和积累,阻碍了设备的效率.

研究的目的:

开发一种新的烯衍生物,FuPE,以改善PCBM为PSC的ETL.
研究FuPE对分子堆叠,结晶性和界面性质的影响.
为了提高电子的移动性,降低陷密度,并改善ETL薄膜中的缺陷被动化.

主要方法:

一种酸盐替代烯衍生物 (FuPE) 的合成.
使用FuPE:PCBM混合物制造ETL.
膜形态,分子堆叠和分子间相互作用的表征.
使用 FuPE:PCBM ETL 的 PSC 的性能评估,包括效率和稳定性测试.

主要成果:

融入FuPE导致了紧的分子堆叠,强制的结晶性和抑制的自我聚合.
PE:PCBM混合物表现出增强的电子流动性 (0.183 cm2 V-1 s-1),较低的陷密度和优越的缺陷被动化.
具有FuPE:PCBM ETL的PSC显示,陷辅助重组减少,电荷载体提取得到改善.

结论:

在PSC中,FuPE有效地优化了基于富勒的ETL.
开发的ETL材料显著提高了功率转换效率 (>26%) 和运行稳定性.
这一战略推动了高效和耐用的矿太阳能电池的开发.

关键词:

收费运营商运输的运输方式电子输送层是一种电子输送层.富勒烯材料是完全的材料.接口被动化接口被动化矿石太阳能电池是如何使用的

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