滴氨基分子作为散装异质连接太阳能电池中的化电子捐赠体
Chad M Amb1, Song Chen, Kenneth R Graham
1The George and Josephine Butler Polymer Research Laboratory, Department of Chemistry, Center for Macromolecular Science and Engineering, University of Florida, Box 117200, Gainesville, Florida 32611, USA.
Journal of the American Chemical Society
|June 8, 2011
概括
研究人员开发了一种新的dithienogermole (DTG) 含有聚合物用于太阳能电池. 这种聚合物获得的功率转换效率 (7.3%) 比其dithienosilole (DTS) 相对应物 (6.6%) 高,这是由于改善了电流和填充因子.
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:
- 合聚合物是有机太阳能电池的关键材料.
- 滴氨 (DTS) 是高性能聚合物中常见的异环.
- 探索新型异循环可以改善光伏性能.
研究的目的:
- 合成和表征第一个含有dithienogermole (DTG) 的结合聚合物.
- 为了评估新DTG聚合物的批量异质连接光伏性能.
- 为了比较基于DTG的太阳能电池与基于DTS的类似电池的性能.
主要方法:
- 静态多重凝聚被用来合成来自distannyl-DTG衍生物和1,3-dibromo-N-octyl-thienopyrrolodione (TPD) 的交替共聚物.
- 由此产生的聚合物 (polyDTG-TPD) 与PC(70) BM混合,用于反向散装异质连接太阳能电池.
- 测量和比较了光伏性能,包括功率转换效率,短路电流,开路电压和填充因子.
主要成果:
- 合成的含有DTG的共聚物吸收了高达735nm的光.
- 与同类的DTS聚合物相比,DTG聚合物表现出更高的最高占成分子轨道 (HOMO) 水平.
- 使用polyDTG-TPD:PC(70) BM混合制造的倒置太阳能电池实现了平均功率转换效率7.3%,超过了基于DTS的电池 (6.6%).
- 提高的效率归因于更高的短路电流和填充因子,尽管开放电路电压略低.
结论:
- 迪聚 (Dithienogermole,DTG) 是有机光伏中高性能合聚合物的有前途的新建构块.
- 基于DTG的聚合物为基于DTS的聚合物提供了可行的替代品,在批量异质连接太阳能电池中展示了改进的功率转换效率.
- 对DTG化学的进一步研究可能会导致更高效,更稳定的有机太阳能电池设备.
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