基于和的非富勒烯聚合物太阳能电池达到9.5%的效率
Haijun Bin1,2, Zhi-Guo Zhang1, Liang Gao1,2
1Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China.
Journal of the American Chemical Society
|March 22, 2016
概括
新的聚合物太阳能电池 (PSC) 使用新型有机半导体. 研究人员开发了三种新聚合物,其中J61显示非富勒烯PSC的功率转换效率为9.53%.
科学领域:
- 材料科学
- 有机电子
- 太阳能发电
背景情况:
- 非富勒烯聚合物太阳能电池 (PSC) 正在与ITIC等新的低带隙有机半导体 (n-OS) 迅速发展.
- 开发匹配的聚合物供体对于提高PSC功率转换效率至关重要.
- 主要挑战包括实现补充吸收,最佳形态和减少能量损失.
研究的目的:
- 合成和评估新型带隙二维合聚合物作为PSC的捐赠材料.
- 研究不同替代剂 (分支基,分支基,线性基) 对光伏性能的影响.
- 确定一个高效非富勒烯PSC的有前途的聚合物供体.
主要方法:
- 合成三种具有不同侧链的双乙烯-二-二共聚物 (J52,J60,J61).
- 聚合物的特性,包括吸收,能量水平和结晶性.
- 使用合成聚合物作为捐赠物和ITIC作为接受物制造和测试PSC设备.
主要成果:
- 基侧链红移吸收,降低了最高占成的分子轨道 (HOMO) 水平,并改善了结晶性.
- 聚合物J61具有线性基侧链,表现出卓越的性能.
- 基于J61的PSC实现了17.43mA/cm2的短路电流密度,0.89V的开路电压和9.53%的PCE.
结论:
- 在J61中的线性替代剂显著提高非富勒烯PSC的性能.
- J61被确定为一个非常有前途的中等带隙聚合物捐赠材料.
- 达到9.53%的PCE是非烯PSC技术的重大进步.
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