High open circuit voltage organic photovoltaic cells fabricated using 9,9′-bifluorenylidene as a non-fullerene type electron acceptor
作者:Hee Un Kim、Ji-Hoon Kim、Hongsuk Suh、Jeonghun Kwak、Dongwook Kim、Andrew C. Grimsdale、Sung Cheol Yoon、Do-Hoon Hwang
DOI:10.1039/c3cc46557h
日期:——
We have found that 9,9'BF can be used as an electron acceptor for P3HT-based OPVs while similar devices using 4,4'BP do not show any photovoltaic effect. This can be related to the respective aromaticity and antiaromaticity of the reduced forms of 9,9'BF or 4,4'BP. The OPV device fabricatedusing P3HT and 9,9'BF exhibited a PCE of 2.28% with a V(oc) of 1.07 V, a J(sc) of 5.04 mA cm(-2), and a FF of
我们已经发现,9,9'BF可用作基于P3HT的OPV的电子受体,而使用4,4'BP的类似器件没有显示出任何光伏效应。这可以与9,9′BF或4,4′BP的还原形式的各自的芳香性和抗芳香性有关。使用P3HT和9,9'BF制造的OPV器件的PCE为2.28%,V(oc)为1.07 V,J(sc)为5.04 mA cm(-2),FF为0.42。
Michael Addition of 4<i>H</i>-Cyclopenta[<i>def</i>]phenanthrene to 9,9′-Bifluorenylidene and the Related Reactions
作者:Takao Kimura、Masahiro Minabe、Kazuo Suzuki
DOI:10.1246/bcsj.52.1447
日期:1979.5
The compound 9-(4H-cyclopenta[def]phenanthren-4-yl)-9,9′-bifluorene was synthesized by the Michael addition of 4H-cyclopenta[def]phenanthrene to 9,9′-bifluorenylidene and also by other reactions. In addition, five kinds of trimers which consisted of 4H-cyclopenta[def]phenanthrene and fluorene were obtained by the same reactions. The conformation of these trimers is assigned to be the gauche-gauche
Does non-planarity obstruct low-dimensional conducting polyarene cation radical salts?
作者:Philippe Michel、Alec Moradpour、Michel Ribault、Pierre Petit、Jean-Jacques Andre
DOI:10.1039/c39890001173
日期:——
(3) was prepared from bis(4H-cyclopenta[def]phenanthren-4-ylidene)(1); a one-dimensional behaviour, exemplified by the ESR-line-width orientational variations, was found for this conducting system, obtained from a non-planar donor.
Diindeno[4,3,2,1-opqr;4′,3′,2′,1′-avut]picene (8) and dibenzo[mn,qr]fluoreno-[2,1,9,8,7-defghi]naphthacene (9) have been synthesized by thermal and catalytic dehydrocyclization, respectively.