Finely designed medium-band-gap polymer donor with judiciously selecting chalcogen atom for high efficiency polymer solar cell

被引：12
作者：
Gong, Xue [1 ]
Feng, Shiyu [1 ]
Li, Guangwu [1 ]
Hou, Ran [1 ]
Liu, Yahui [1 ]
Zhang, Zhe [1 ]
Li, Cuihong [1 ]
Bo, Zhishan [1 ]
机构：
[1] Beijing Normal Univ, Coll Chem, Beijing Key Lab Energy Convers & Storage Mat, Beijing 100875, Peoples R China
来源：
DYES AND PIGMENTS | 2017年 / 141卷
基金：
北京市自然科学基金;
关键词：
Medium band gap copolymers; Polymer solar cells; Chalcogen atoms; Benzoxadiazole; OPEN-CIRCUIT VOLTAGE; FLUORINATED BENZOTHIADIAZOLE; CONJUGATED POLYMERS; ALKYLTHIO;
D O I：
10.1016/j.dyepig.2017.02.022
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
A novel medium band gap copolymer (PBO) based on benzodithiophene (BDT) and benzoxadiazole (BOz) was synthesized and applied in polymer solar cells (PSCs). The introduction of two alkylthio side chains onto the BDT unit can endow the resulting polymer (PBO) with good solubility in solutions and good crystallinity in the solid state. The low HOMO level of -5.52 eV and the broad absorption ranging from 350 to 700 nm make PBO a promising donor material for PSCs. Power conversion efficiency higher than 7% has been achieved for devices using PBO as the donor material and PC71BM or ITIC as the acceptor material. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：342 / 347
页数：6
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