三元运算
材料科学
接受者
能量转换效率
轨道能级差
聚合物太阳能电池
吸收(声学)
分析化学(期刊)
短路
波长
光电子学
化学
电压
有机化学
分子
复合材料
凝聚态物理
物理
量子力学
计算机科学
程序设计语言
作者
Jiaxiu Man,Zhiyong Liu
标识
DOI:10.1016/j.eurpolymj.2022.111407
摘要
In this manuscripts, a ternary polymer solar cells (PSCs) are fabricate with two “D18-series” donor (D18-Cl and D18) as blend donor and T6 as acceptor. The effects of D18-Cl and D18 in ternary PSC on the film morphology, photoelectronic properties and charge carrier dynamics were systematically investigated. By finely adjusting the D18 content, a power conversion efficiency (PCE) of 16.66 % is achieved in the optimized ternary PSCs with 35 wt% D18 in donor, resulting from significantly improved short-circuit-current density (JSC) of 26.80 mA cm−2 in comparison with those of D18-Cl:Y6 binary PSCs. The JSC of ternary PSCs monotonously increase along with the incorporation of D18, indicating that D18 is comprehensively optimal short wavelength photon harvesting compared with D18-Cl. Both D18-Cl and D18 are shown similar highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energy levels, which is beneficial to efficient charge transport at the blend donor domain. Our work indicates that the blend of D18-Cl and D18 as blend donor and Y6 as electron acceptor to boost photovoltaic performance in the ternary PSCs.
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