佩罗夫斯基特结晶控制用于通过结合有机框架通过剩余溶剂抑制的大型,定向的粒度
Jindan Zhang1,2, Shicheng Tang1, Chi Li1
1College of Chemistry and Materials Science, Fujian Key Laboratory of Polymer Materials, Fujian Normal University, Fuzhou, 350117, China.
Small (Weinheim an der Bergstrasse, Germany)
|September 28, 2024
概括
研究人员在矿膜中开发了新的多孔结构,以控制谷物生长并消除空隙. 这一策略通过管理溶剂挥发来提高太阳能电池的性能和稳定性.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 固态物理 固态物理
背景情况:
- 对于高性能太阳能电池来说,实现具有大,定向粒度的无空矿膜对于高性能太阳能电池至关重要.
- 对于溶剂挥发存在相互矛盾的要求:缓慢的谷物生长和快速的空虚消除.
- 现有的谷物边界添加剂可能会加剧残留溶剂问题.
研究的目的:
- 为了解决矿薄膜制造中冲突的溶剂挥发需求.
- 开发一种同时控制结晶和减少残留溶剂的方法.
- 为了提高基于矿的设备的性能和稳定性.
主要方法:
- 在矿粒边界内使用灵活的结有机框架 (HOF-FJU-2) 构建具有"可切换孔"性质的多孔结构.
- 使用添加物分子延长结晶并通过Pb-O结合引导 (100) 面生长.
- 使用理论计算和现场频谱测试来分析结晶的热力学和动力学.
主要成果:
- "可切换毛孔"结构在化过程中促进了溶剂的完全挥发,然后封闭毛孔.
- 添加物分子促进大,定向的矿颗粒的生长.
- 采用这种方法制造的矿太阳能电池显示,功率转换效率从22.14%提高到24.18%,稳定性提高.
结论:
- "可切换孔隙"战略有效地协调了矿薄膜形成中溶剂管理的矛盾要求.
- 这种方法使得无空无矿膜具有增强的晶体质量.
- 开发的方法为制造高性能和稳定的矿太阳能电池提供了有前途的途径.
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