区域中的高开放电路电压 常规窄带间隙聚合物太阳能电池
Ming Wang1, Hengbin Wang, Takamichi Yokoyama
1Center for Polymers and Organic Solids, ‡Mitsubishi Chemical Center for Advanced Materials, §Departments of Chemistry and Biochemistry, University of California , Santa Barbara, California 93106, United States.
合成了一种新的结合聚合物,PIPCP,具有窄带间隙. 其高度有序的结构显著提高了有机太阳能电池的功率转换效率,实现了高开放电路电压.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 聚合物化学 聚合物化学
背景情况:
- 合聚合物对于有机太阳能电池至关重要.
- 窄带间隙聚合物对于有效的光吸收至关重要.
- 分子顺序显著影响设备的性能.
研究的目的:
- 设计和合成一个区域常规的窄带间隙合聚合物 (PIPCP).
- 研究分子秩序对有机太阳能电池性能的影响.
- 为了评估PIPCP在散装异质连接装置中的光伏特性.
主要方法:
- 综合PIPCP及其区域随机对应物 (PIPC-RA).
- 使用PIPCP:PC61BM混合物制造大量异质连接 (BHJ) 有机太阳能电池.
- 使用吸收光谱和放牧发生率广角X射线衍射 (GIWAXS) 进行薄膜的表征.
- 设备性能评估,包括功率转换效率 (PCE) 和开放电路电压 (Voc).
主要成果:
- PIPCP具有狭窄带间隙 (例如1.5 eV) 和高度有序的分子结构.
- 与其区域随机对应物相比,区域常规的PIPCP产生更高的PCE.
- PIPCP的薄膜显示了增强的分子秩序.
- PIPCP:PC61BM设备在0.86V的高开通电路电压 (Voc) 时达到~6%的PCE.
结论:
- PIPCP的区域规律结构增强了薄膜中的分子秩序.
- 这种改进的顺序导致有机太阳能电池的更高的功率转换效率.
- 对于窄带间隙聚合物来说,PIPCP展示了一个有前途的高开通电路电压,表明能量损耗最小.
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