对于溶液加工有机太阳能电池相关的中等尺寸窄带间联分子的设计和特性
Xiaofeng Liu1, Yanming Sun, Ben B Y Hsu
1Center for Polymers and Organic Solids, ‡Department of Chemistry and Biochemistry, and §Department of Physics, University of California , Santa Barbara, California 93106, United States.
Journal of the American Chemical Society
|March 25, 2014
概括
研究人员合成了狭窄带间隙结合色素,以了解有机太阳能电池中的结构性质关系. 修改电子接受组并添加原子调整了光学,电子和热性能,以改进光电子设备.
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:
- 窄带间隙结合色素对有机太阳能电池至关重要,提供可调节的光学和电子性能.
- 了解分子结构和散装特性之间的关系是设计高效光电子材料的关键.
研究的目的:
- 为了合成和表征捐赠者-接受者交替狭窄带间隙结合色素.
- 调查电子接受部分的变化和替代如何影响分子性质.
- 建立一个化学设计平台,用于在有机电子学中进行结构性质关系研究.
主要方法:
- 交替结合的D-A染色体与不同的电子接受组的合成 (A2).
- 密度函数理论 (DFT) 用于基础状态结构优化.
- 研究光学,电化学,热和电荷传输特性.
- 对光伏设备性能和场效应晶体管特性进行评估.
主要成果:
- 改变单个电子接受组显著影响光学特性和能量水平.
- 原子的引入改变了固态热特性,同时保持了光学和电化学特性.
- 通过DFT,在研究的分子中观察到类似的"U"形状结构.
- 评估了结构与属性的关系,包括热组织和二极矩.
结论:
- 狭窄带间隙染色体的分子设计可以合理调整为光电子应用.
- 分子结构的系统修改为优化有机太阳能电池性能提供了一条途径.
- 该研究提供了通过有针对性的化学修改来控制热和电子性能的见解.
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