在亚硫氨酸/C60有机光伏电池中增强开放电路电压
Kristin L Mutolo1, Elizabeth I Mayo, Barry P Rand
1Department of Chemistry, University of Southern California, Los Angeles, California 90089, USA.
Journal of the American Chemical Society
|June 22, 2006
概括
子亚氨酸化物 (SubPc) /C60太阳能电池的开放电路电压 (Voc) 超过铜氨酸 (CuPc) /C60电池的两倍. 这种改进是由于SubPc较低的氧化潜力造成的更大的接口间隙 (Ig).
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 太阳能光伏发电是如何实现的
背景情况:
- 传统的有机光伏 (OPV) 设备通常使用铜酸 (CuPc) 作为捐赠材料.
- 富勒,如C60,通常被用作OPV中的受体材料.
- 优化开放电路电压 (Voc) 对于提高OPV效率至关重要.
研究的目的:
- 为了研究一种新型的双重异构有机光伏电池的性能.
- 为了比较子子化 (SubPc) /C60细胞的Voc与传统的CuPc/C60细胞.
- 阐明分子性质,接口能量和光伏性能之间的关系.
主要方法:
- 使用SubPc/C60和CuPc/C60活性层制造双重异构薄膜光伏设备.
- 在模拟的1太阳AM1.5G照明下性能特征.
- 分析分子轨道能量水平以确定接口间隙 (Ig).
主要成果:
- 与CuPc/C60细胞相比,SubPc/C60细胞的Voc增加了一倍多.
- 由于SubPc的氧化潜力较低,接口间隙 (Ig) 增加了400 meV.
- 在增加的Ig和增强的Voc.之间观察到强烈的相关性.
结论:
- 子亚酸化物 (SubPc) 是高性能有机光伏的有希望的捐赠材料.
- 设计接口能量,特别是接口间隙 (Ig),是一种可行的策略,可以显著提高Voc.
- 该 SubPc/C60 系统提供了一条通往更高效和更具成本效益的有机太阳能电池的道路.
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