敏化剂吸附温度对染料敏化太阳能电池性能的影响
Frédéric Sauvage1, Jean-David Decoppet, Min Zhang
1Laboratoire de Photonique et Interfaces, Institut des Sciences et Ingénieurie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 6, CH-1015 Lausanne, Switzerland. frederic.sauvage@u-picardie.fr
Journal of the American Chemical Society
|May 11, 2011
概括
降低染料吸附温度显著提高了染料敏感太阳能电池 (DSC) 的效率. 在4°C吸附C101敏感器改善了光伏性能,产生11.5%的功率转换效率 (PCE).
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) 是一个有前途的光伏技术.
- 优化染料吸附对于提高DSC性能至关重要.
- 基于Ru的异体质复合体C101是DSC的关键敏感剂.
研究的目的:
- 为了研究染料吸附温度对DSC光伏性能的影响.
- 了解温度如何影响自组装染料层和电子转移动态.
- 通过优化染料吸附,在DSC中实现高功率转换效率 (PCE).
主要方法:
- 使用半透镜光电极和基于Ru的C101感应器制造DSC.
- 研究不同温度 (4°C,20°C,60°C) 的染料吸附.
- 使用光伏性能测量,电化学阻抗光谱 (EIS) 和减弱总反射里埃变换红外光谱 (ATR-FTIR) 进行了表征.
主要成果:
- 将染料吸附温度降至4°C显著提高了DSC光伏的性能,包括开通电路电压 (Voc),短路光电流密度 (Jsc),填充因子 (FF) 和PCE.
- 用4°C吸收染料制造的DSC实现了11.5%的PCE.
- EIS和ATR-FTIR结果表明,低温吸附产生了一种染料层,更有效地抑制了回电子转移.
结论:
- 染料吸附温度是优化DSC性能的一个关键参数.
- 低温染料吸附 (4°C) 会改善染料层的形成和抑制电荷的重组.
- 优化的染料吸附条件使得高效率的DSC具有有前途的光伏性能.
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