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一种非离子化p-dopant使得高效和稳定的矿太阳能电池的建造成为可能

Zhongquan Wan¹, Wang Yu¹, Jinyu Yang¹

¹National Key Laboratory of Electronic Films and Integrated Devices, School of Integrated Circuit Science and Engineering, University of Electronic Science and Technology of China 611731 Chengdu P. R. China zqwan@uestc.edu.cn luojs@uestc.edu.cn cyjia@uestc.edu.cn.

Chemical science

|August 18, 2025

概括

一种新的非离子化p-dopant,PFB-TFSI,通过取代有问题的Li-TFSI/t-BP系统来提高矿太阳能电池 (PSC) 的性能和稳定性. 这种新型剂提高了孔载层的效率和防潮性.

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.
太阳能光伏发电是如何实现的

背景情况:

-TFSI/t-BP系统对于化矿太阳能电池 (PSC) 中的孔输送层 (HTL) 是至关重要的.
然而,Li-TFSI的高度和Li+迁移,以及t-BP的腐蚀性和波动性,限制了PSC的效率和稳定性.
开发替代性p-dopants对于推进PSC技术至关重要.

研究的目的:

开发一种新的非离子化p-dopant,PFB-TFSI,作为PSCs的Li-TFSI/t-BP系统的稳定和高效替代品.
研究PFB-TFSI对PSC的兴奋剂过程,耐湿性和整体性能的影响.
增强PSC的长期运营稳定性.

主要方法:

一种新型非离子化p-dopant的合成,即1-[bis(trifluoromethanesulfonyl) methyl]-2,3,4,5,6-pentafluorobenzene (PFB-TFSI) 的合成.
使用PTAA:PFB-TFSI HTL和PTAA:Li-TFSI/t-BP HTL进行比较的PSC的制造.
描述PSC效率,包括功率转换效率 (PCE) 测量.
在加速老化条件下 (85°C,相对湿度50-70%) 评估长期稳定性.

主要成果:

在没有t-BP的情况下,PFB-TFSI溶于二中,简化了兴奋剂过程.
由于其较低的HOMO水平,PFB-TFSI通过直接氧化PTAA来有效地化PTAA,形成[PTAA]+基离子.
使用PTAA:PFB-TFSI的PSC实现了24.22%的更高效率,而PTAA:Li-TFSI/t-BP. 的效率为21.98%.
基于PTAA:PFB-TFSI的PSC显著改善了长期稳定性,在300小时的老化后保持了88%的初始效率,而对照组的效率为63%.

结论:

PFB-TFSI是一种有前途的非离子化p-dopant,用于高性能和稳定的PSC.
开发的剂克服了传统Li-TFSI/t-BP系统的局限性,提供了增强的防潮性能和运行寿命.
PFB-TFSI可实现高效的HTL兴奋剂,并有助于在矿太阳能设备中实现更高的功率转换效率.

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