当前位置: X-MOL 学术Macromol. Rapid Commun. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Benzothiadiazole Versus Thiophene: Influence of the Auxiliary Acceptor on the Photovoltaic Properties of Donor–Acceptor‐Based Copolymers
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2017-10-25 , DOI: 10.1002/marc.201700547
Zongbo Li 1 , Kangkang Weng 2 , Aihua Chen 1 , Xiaobo Sun 2 , Donghui Wei 3 , Mingming Yu 3 , Lijun Huo 2 , Yanming Sun 2
Affiliation  

Two donor–acceptor (D–A) type conjugated copolymers, P1 and P2, are designed and synthesized. A classical benzothiadiazole acceptor is used to replace a thiophene unit in the polymer chain of P1 to obtain P2 terpolymer. Compared with P1, P2 exhibits broader absorption spectra, higher absorption coefficient, deeper lowest unoccupied molecular orbital level, and a relatively lower band gap. As a result, the P2‐based solar cell exhibits a high power conversion efficiency (PCE) of 6.60%, with a short‐circuit current (J sc) of 12.43 mA cm−2, and a fill factor (FF) of 73.1%, which are higher than those of the P1‐based device with a PCE of 4.70%, a J sc of 9.43 mA cm−2, and an FF of 61.6%.

中文翻译:

苯并噻二唑与噻吩:辅助受体对基于施主-受主的共聚物的光伏性能的影响

设计并合成了两种供体-受体(DA)型共轭共聚物P1P2。经典的苯并噻二唑受体用于取代P1聚合物链中的噻吩单元,以获得P2三元共聚物。与P1相比,P2具有更宽的吸收光谱,更高的吸收系数,更深的最低未占据分子轨道能级和相对较低的带隙。结果,基于P2的太阳能电池表现出6.60%的高功率转换效率(PCE),短路电流(J sc)为12.43 mA cm -2,填充因子(FF)为73.1%,高于PCE为4.70%,J sc为9.43 mA cm -2和FF为61.6%的基于P1的设备。
更新日期:2017-10-25
down
wechat
bug