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为稳定高效的基于碳电极的矿太阳能电池选择孔运输层

Kausar Ali Khawaja¹, Wenjun Xiang¹, Jacob Wall¹

¹Materials Science and Engineering Program, School for Engineering of Matter, Transport and Energy, Arizona State University Tempe AZ 85287 USA fengyan@asu.edu.

|April 29, 2025

概括

选择正确的孔输送层 (HTL) 是基于碳的矿太阳能电池 (C-PSC) 的关键. 螺旋OMeTAD提供了高效率,而CuSCN为C-PSC提供了更好的长期稳定性.

科学领域:

材料科学材料科学材料科学
可再生能源可再生能源是可再生能源.
太阳能光伏发电是如何实现的

背景情况:

矿太阳能电池 (PSC) 显示出高效率,但长期稳定性不佳.
基于碳的PSC (C-PSC) 提供了一种具有成本效益和稳定的替代方案,但性能落后于基于贵金属的设备.
优化碳/矿接口对于C-PSC的性能至关重要,孔输送材料 (HTM) 的选择是关键因素.

研究的目的:

系统地研究常用的孔运输层 (HTL) 对基于碳的矿太阳能电池 (C-PSC) 的性能和稳定性的影响.
确定最佳的HTL,以平衡C-PSC中的功率转换效率 (PCE) 和运行稳定性.

主要方法:

使用三个不同的HTLs制造和表征C-PSCs:Spiro-OMeTAD,CuSCN和PTAA.
通过测量功率转换效率 (PCE) 来评估性能.
在环境条件下500小时的稳定性测试.

主要成果:

基于Spiro-OMeTAD的C-PSC实现了最高的PCE19.29%.
基于CuSCN的C-PSC表现出卓越的稳定性,在500小时后保留了~60%的初始性能,尽管PCE较低11.94%.
基于PTAA的C-PSC显示中度PCE (12.92%),但显著降解 (~35%的剩余效率).

结论:

高线选择对C-PSC的效率和稳定性都具有关键的影响.
CuSCN为增强C-PSC稳定性提供了一个有希望的HTL,而Spiro-OMeTAD在实现更高功率转换效率方面表现出色.
需要进行进一步的研究,以优化HTL用于商业上可行的C-PSC,这些C-PSC结合了高性能和长期耐用性.

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相关概念视频

P-N junction

P-N junction

A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...