有机太阳能电池
接受者
富勒烯
密度泛函理论
带隙
能量转换效率
分子
材料科学
太阳能电池
化学物理
活动层
化学
光电子学
纳米技术
光化学
计算化学
图层(电子)
有机化学
物理
聚合物
复合材料
薄膜晶体管
凝聚态物理
作者
Malik Muhammad Asif Iqbal,Muhammad Arshad,Muhammad Yasir Mehboob,Muhammad Shahzeb Khan,Sanwal Piracha
标识
DOI:10.1016/j.saa.2022.121844
摘要
The achievement of highly efficient power conversion efficiency (PCE) is a big concern for non-fullerene organic solar cells (NF-OSCs) because PCE can depend on numerous variables. Here, new five novel acceptor molecules without fullerenes were developed and investigated using DFT (density functional theory) and TD-DFT (time dependent-density functional theory). Compared to the recently synthesized molecule (PZ-dIDTC6), the developed molecules display a narrow optical band gap, exhibiting a red shift in the absorption spectrum. The developed molecules (YM1-YM5) express high mobility of electrons and holes in the active layer of OSCs (organic solar cells). In addition, high open-circuit voltage (Voc) values with maximum charge density shifting are noted in designed molecules. YM1-YM5 is also associated with low binding energy and excitation energy. This work proves that noncovalent conformational locking is favourable for improving PCE devices.
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