A propeller-shaped perylene diimide hexamer as a nonfullerene acceptor for organic solar cells

被引：26

作者：

Liu, Juncheng ^{[1
]}

Xie, Sufei ^{[1
]}

Feng, Shiyu ^{[1
]}

Li, Miao ^{[1
]}

Wu, Liangliang ^{[1
]}

Xu, Xinjun ^{[1
]}

Chen, Xuebo ^{[1
]}

Li, Cuihong ^{[1
]}

Bo, Zhishan ^{[1
]}

机构：

[1] Beijing Normal Univ, Beijing Key Lab Energy Convers & Storage Mat, Coll Chem, Beijing 100875, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2018年 / 6卷 / 35期

基金：

北京市自然科学基金;

关键词：

SMALL-MOLECULE ACCEPTORS; NON-FULLERENE ACCEPTORS; ELECTRON-ACCEPTORS; POLYMER; EFFICIENCY; BISIMIDE; GENERATION; MORPHOLOGY; GEOMETRY; ENABLES;

D O I：

10.1039/c8tc03081b

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel propeller-shaped molecule (HPB-PDI6) with a hexaphenylbenzene (HPB) core and six peripheral PDI units was synthesized via Co-2(CO)(8)-catalyzed cyclotrimerization and used as an acceptor for organic solar cells (OSCs). The intriguing geometry of the HPB core and the spatial repulsion of the PDI rings created a twisted three-dimensional propeller-shaped conformation for HPB-PDI6. The propeller-shaped conformation could prevent the acceptor molecules from forming large aggregates in the active layer. As expected, the PTB7-Th:HPB-PDI6 blend films show a favorable morphology as well as high and balanced charge carrier mobility. Devices based on PTB7-Th:HPB-PDI6 achieved a PCE of 6.63% with a V-oc of 0.92 V, a J(sc) of 15.11 mA cm(-2), and an FF of 48.0%. Our results have demonstrated that the easily prepared propeller-shaped HPB-PDI6 could be a promising acceptor for high efficiency organic solar cells.

引用

页码：9336 / 9340

页数：5

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