有机太阳能电池
分子
接受者
开路电压
富勒烯
带隙
材料科学
轨道能级差
激发态
光伏系统
化学
纳米技术
光电子学
电压
原子物理学
聚合物
有机化学
电气工程
物理
工程类
复合材料
凝聚态物理
作者
Amna Zahoor,Sonia Sadiq,Rasheed Ahmad Khera,Manel Essid,Zouhaier Aloui,Naifa S. Alatawi,Mahmoud A. A. Ibrahim,Tamer H. A. Hasanin,Muhammad Waqas
标识
DOI:10.1016/j.jmgm.2023.108613
摘要
Minimizing the energy loss and improving the open circuit voltage of organic solar cells is still a primary concern for scientists working in this field. With the aim to enhance the photovoltaic performance of organic solar cells by minimizing energy loss and improving open circuit voltage, seven new acceptor molecules (LC1-LC7) are presented in this work. These molecules are designed by modifying the terminal acceptors of pre-existed “LC81” molecule based on an indacinodithiophene (IDT) fused core. The end-group modification approach is very fruitful in ameliorating the efficacy and optoelectric behavior of OSCs. The newly developed molecules presented remarkable improvements in performance-related parameters and optoelectronic properties. Among all designed molecules, LC7 exhibited the highest absorption maxima (λmax = 869 nm) with the lowest band-gap (1.79 eV), lowest excitation energy (Ex = 1.42 eV), lowest binding energy, and highest excited state lifetime (0.41 ns). The newly designed molecules LC2, LC3, and LC4 exhibited remarkably improved Voc that was 1.84 eV, 1.82 eV, and 1.79 eV accordingly, compared to the LC81 molecule with Voc of 1.74 eV LC2 molecule showed significant improvement in fill factor compared to the previously presented LC81 molecule. LC2, LC6, and LC7 showed a remarkable reduction in energy loss by showing Eloss values of 0.26 eV, 0.18 eV, and 0.25 eV than LC81 molecule (0.37 eV). These findings validate the supremacy of these developed molecules (especially LC2) as potential components of future OSCs.
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