铜协调复合物的温度引导固化作为孔运输材料
Timo Keller1, Iacopo Benesperi1,2, Jakob Thyr3
1School of Natural and Environmental Sciences, Newcastle University, Bedson Building, NE1 7RU, Newcastle upon Tyne, UK. marina.freitag@newcastle.ac.uk.
Physical chemistry chemical physics : PCCP
|July 14, 2025
概括
我们开发了一种快速的20分钟固态工艺,用于在染料敏感太阳能电池 (DSC) 中的铜协调复合孔传输材料 (HTM). 这种方法优化了HTM形态,并提高了太阳能电池的性能,特别是在弱光条件下.
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
- 电化学 电化学 电化学
背景情况:
- 染料敏感太阳能电池 (DSC) 需要高效的孔运输材料 (HTM) 才能达到最佳性能.
- 传统的铜基HTM在DSC中的制造是耗时的,通常超过48小时.
- 开发快速,可控制的HTM固态形成过程对于商业可行性至关重要.
研究的目的:
- 建立一个快速的,固态形成过程,用于铜协调复合HTMs在DSCs.
- 研究后处理条件对HTM形态和光伏性能的影响.
- 优化接口电荷传输和设备效率,特别是在低光条件下.
主要方法:
- 使用了基于Cu (I/II) (tmby) 2的液体电解质的热诱导相变.
- 使用70°C的后处理20分钟,形成无形的HTMs.
- 通过扫描电子显微镜和通过依赖时间的拉曼光谱学去除溶剂来表征HTM形态.
- 分析了使用短暂吸收光谱学和用电化学阻抗光谱学分析电荷载体动态的界面性质.
主要成果:
- 将HTM处理时间从48小时以上缩短到20分钟.
- 实现了几乎完全的溶剂去除和一个紧的,缺陷最小化的HTM形态.
- 经过短时间热处理,证明了超快的染料再生 (487 ns) 和高再生效率 (99.2%).
- 在TiO2/HTM接口观察到稳定的电荷传输电阻,证实了高效的孔传输.
- 在1个阳光下达到10%的功率转换效率,在室内照明下达到16%的峰值效率 (1000卢克斯).
结论:
- 建立了一个强大的和可重复的固态路径,用于在DSC中制造基于Cu的HTM.
- 优化的后处理条件 (70°C20分钟) 产生了优越的HTM形态和设备性能.
- 该过程通过控制形态和界面电荷转移来提高低光性能和光伏产量.
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