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室温结晶的纯相 α-FAPbI 矿与 In-Situ 谷物边界被动化
Zejiao Shi1, Yaxin Wang1, Yanyan Wang1
1Center for Micro Nano Systems, School of Information Science and Technology (SIST), Fudan University, Shanghai, 200433, P. R. China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|March 20, 2024
概括
将3,4,5-Trifluoroaniline iodide (TFAI) 加入到矿前体中,通过改善结晶和被动化粒度边界,提高了矿太阳能电池 (PSC) 的效率. 这导致了更高的开放电路电压和稳定的输出功率.
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:
- 在矿颗粒边界 (GBs) 的能量损失限制了矿太阳能电池 (PSC) 的效率.
- 高质量的结晶和GB被动化是关键策略,但通常是单独执行的.
- 复杂的谷物生长和缺陷形成机制阻碍了综合方法.
研究的目的:
- 开发一种联合方法,同时在PSC中实现谷物边界被动化和改善结晶.
- 为了研究3,4,5-Trifluoroaniline iodide (TFAI) 在矿膜形成和缺陷抑制中的作用.
- 通过优化矿结构来提高PSC的性能和稳定性.
主要方法:
- 将3,4,5-Trifluoroaniline iodide (TFAI) 加入到矿前体溶液中.
- 使用TFAI诱导合体结合到微集群中,并促进室温α-FAPbI阶段过渡.
- 利用TFAI的受控反应能力和固体阻碍来抑制在谷物边界的缺陷.
主要成果:
- TFAI促进了具有有效被动化GBs的良好结晶的矿颗粒的形成.
- 公共电路的开放电路电压 (Voc) 从1.08V增加到1.17V,这在没有接口修改的情况下是显著的改善.
- 实现了24.81%的冠军功率转换效率 (PCE),增强了运行稳定性,在280小时内显示最小的衰变.
结论:
- 使用TFAI的综合方法为高效和稳定的PSC提供了一个协同策略.
- 通过促进优质结晶和被动化,TFAI有效地解决了谷物边界能量损失.
- 这种方法为推进矿太阳能电池技术向商业可行性提供了一个有希望的途径.
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