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用于α-FAPbI₃矿太阳能电池的伪化离子工程

Jaeki Jeong^1,2,3, Minjin Kim⁴, Jongdeuk Seo¹

¹Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Republic of Korea.

|April 6, 2021

概括

研究人员开发了一种新的离子工程策略, 使用酸盐改进矿太阳能电池. 这种方法可以消除缺陷,增强晶体性,并将功率转换效率提高到25.6%.

科学领域:

材料科学
固态化学
太阳能发电

背景情况:

金属化物矿 (ABX3) 是薄膜光伏的前景.
三化 (FAPbI3) 是高效稳定的矿太阳能电池的主要半导体.
缺陷,特别是离子空隙,限制了矿的性能.

研究的目的:

引入一个离子工程策略来抑制矿薄膜的缺陷.
增强矿薄膜的结晶性和光电子特性.
提高矿太阳能电池的效率和稳定性.

主要方法:

使用伪化物离子形式 (HCOO-) 进行离子工程.
应用于抑制粒边界和表面的离子空缺缺陷.
研究了对矿膜结晶性和设备性能的影响.

主要成果:

成功抑制了离子空缺缺陷和增强了膜结晶性.
太阳能电池的功率转换效率达到了25.6% (认证为25.2%).
经过证明的长期运行稳定性 (450小时) 和高电度.

结论:

使用酸盐的阳离子工程有效地消除了金属化物矿中的主要晶格缺陷.
这种方法可以轻松地获得具有增强光电子性能的可处理溶液薄膜.
这些发现为高效且稳定的矿太阳能电池提供了直接途径.

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