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基于不同π结合桥的DSSC的电荷转移和光物理特性:DFT和TD-DFT研究

Yi Yang¹, Xin Miao¹, Chuanlong Liu²

¹Houston International Institute, Dalian Maritime University, Dalian, 110626, People's Republic of China.

Journal of molecular graphics & modelling

|February 21, 2025

概括

染料敏感太阳能电池 (DSSC) 的新染料设计显示效率有所提高. 在π桥中的硫和基增强光吸收,提高了DSSC的性能.

科学领域:

材料科学材料科学材料科学
太阳能光伏发电是如何实现的
有机化学有机化学

背景情况:

染料敏感太阳能电池 (DSSC) 对于太阳能转换至关重要.
染料敏感器是DSSC性能和效率的关键.
优化染料结构对于推进光伏技术至关重要.

研究的目的:

为提高DSSC性能设计新的D-A-π-A型染料.
为了研究不同 π 结合桥对染料特性的影响.
分析设计染料的光物理和光伏特性.

主要方法:

D-A-π-A型染料的计算设计.
密度函数理论 (DFT) 用于基本状态属性.
对于激发状态属性的时间依赖密度函数理论 (TD-DFT).
过渡密度矩阵,化学反应率和光伏参数的分析.

主要成果:

基于蒂奥芬的π桥导致更小的能量差距和红移吸收.
基进一步增强由于π电子密度的吸收峰值的红移.
在π桥中组合的烯和基团产生了优越的光物理性质.
DFT和TD-DFT计算提供了对结构与财产关系的见解.

结论:

设计的含有硫和的π桥显著改善了DSSC的染料性能.
这些结构修改增强了光吸收和电子传输能力.
这项研究为开发用于太阳能电池的高性能染料敏感剂提供了理论基础.

关键词:

收费转移是指收费转移的情况.在 DFT 方面,它是最重要的.DSSCs 是一个 DSSC.染料敏感化太阳能电池的使用方法这是TD-DFTT.

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