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坚固的化八面体表面用于高效和稳定的矿太阳能电池

Bin Wen^1,2, Tian Chen^1,2, Qixin Yin^1,2

¹School of Materials, Shenzhen Campus of Sun Yat-sen University, No. 66, Gongchang Road, Shenzhen, 518107, P. R. China.

Nature communications

|September 4, 2024

概括

使用N,N'-Dimethyl-1,2-ethanediamine对矿材料的表面处理可以稳定矿结构. 这提高了矿太阳能电池的性能和耐用性,实现了高功率转换效率和长期稳定性.

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
化学化学化学

背景情况:

矿材料具有出色的光电性能,但存在表面缺陷和不稳定性.
虽然PbI6八面体对于性能至关重要,但它有助于表面脆弱.

研究的目的:

为矿材料开发表面处理方法,以提高其稳定性和性能.
为了研究双酸对矿表面的双酸对化效应.

主要方法:

用N,N-二甲基-1,2-乙二胺对矿表面的处理.
在现场形成一层酸酸盐层.
表面被动化和缺陷抑制的特征.

主要成果:

形成了一个强大的合八面体层,稳定了矿.
缺陷生成,离子迁移和骨崩被显著抑制.
观察到延长载体寿命和调整的表面能量水平.

结论:

N,N -Dimethyl-1,2-ethanediamine有效地使矿表面被动,提高了材料的稳定性.
经过处理的矿太阳能电池实现了25.7%的功率转换效率,并在1000小时的老化后保持了90%以上的稳定性.

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