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用于高光伏染料敏感太阳能电池的铜双氧化还原介质
Yasemin Saygili, Magnus Söderberg, Norman Pellet
1Department of Chemical Sciences, University of Naples Federico II , 80126 Naples, Italy.
Journal of the American Chemical Society
|November 4, 2016
概括
新的铜复合物在染料敏感太阳能电池 (DSC) 中起有效的氧化还原媒介作用,增强光电流和光电压. 通过促进快速染料再生和减少电子重组,这些介质可以实现高功率转换效率.
科学领域:
- 材料科学
- 电化学
- 可再生能源
背景情况:
- 染料敏感太阳能电池 (DSC) 依赖于氧化还原介质来确定光电流和光电压.
- 有效的光电流需要调节器快速减少染料,而高光电压则需要较低的染料再生驱动力.
研究的目的:
- 引入和评估新的铜双复合物作为DSC的氧化还原媒介.
- 在染料再生动力学,光伏和光电流方面评估它们的性能.
- 将它们的效率与现有的基于铜的氧化还原配对进行比较.
主要方法:
- 合成和描述两种新的铜双复合物:Cu ((dmby) 2TFSI2/1和Cu ((tmby) 2TFSI2/1.
- 使用这些复合物作为有机Y123染料的氧化还原媒介的DSC的制造和测试.
- 电化学分析以确定氧化还原潜力和重组能量.
- 在AM1.5G照明下测量光伏性能.
主要成果:
- 新的铜复合体在低驱动力 (0.1V) 的情况下表现出高效的染料再生 (2-3μs).
- 在不影响光电密度的情况下,可以实现超过1.0V的高光伏.
- Cu ((tmby) 2TFSI2/1的电子反转速率较慢,导致电荷载体寿命更长.
- 使用Cu{tmby}2/1,Cu{dmby}2/1和Cu{dmp}2/1电解质的DSC实现了分别10.3%,10.0%和10.3%的功率转换效率.
结论:
- 研究的铜复合物是高性能DSC的有希望的氧化还原介质.
- 它们平衡快速染料再生和抑制重组的能力为DSC开发提供了新的途径.
- 这些发现突显了基于铜的氧化还原系统在有效的太阳能转化方面的潜力.
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