通过真空沉积的纯化物多变宽带间隔矿
Isidora Susic1, Lidón Gil-Escrig1, Kassio P S Zanoni1
1Instituto de Ciencia Molecular, Universidad de Valencia, C/Catedrático J. Beltrán 2, Paterna, 46980 Spain.
ACS materials letters
|February 12, 2024
概括
研究人员使用真空沉积与添加剂稳定了太阳能电池的CsPbI3矿阶段. 这种方法实现了超过12%的功率转换效率,使用一种新的四源沉积技术进一步提高了14.8%.
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
- 固态化学 固态化学
背景情况:
- 氧化 (CsPbI3) 矿提供了合适的带隙,用于联太阳能电池.
- 对CsPbI3的主要挑战是它在室温下不稳定,导致非半导体相.
- 稳定CsPbI3在溶液加工过程中经常涉及添加剂,真空沉积的研究较少.
研究的目的:
- 为了展示稳定的CsPbI3矿薄膜的室温真空处理.
- 调查二甲基化在真空沉积过程中作为稳定剂的使用.
- 通过整合第三个A-site cation来提高设备的性能.
主要方法:
- 对CsI,PbI2和二甲基化进行共化,用于CsPbI3薄膜的真空沉积.
- 使用真空沉积的CsPbI3膜制造平面太阳能电池.
- 四源沉积技术包括甲基用于进一步优化.
主要成果:
- 在室温下通过真空处理实现稳定的CsPbI3矿膜.
- 制造的平面太阳能电池,功率转换效率 (PCE) 超过12%.
- 使用四源沉积工艺开发了纯酸配方,达到14.8%的PCE.
结论:
- 用二甲基化进行真空处理是一种可行的方法,可以在室温下稳定CsPbI3矿膜.
- 加入第三个A位点离子 (甲基) 进一步提高宽带间隙太阳能电池的性能.
- 这项工作为通过真空沉积开发高效和稳定的矿太阳能电池提供了一个有希望的途径.
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