A crystalline D-π-A organic small molecule with naphtho[1,2-b:5,6-b′]dithiophene-core for solution processed organic solar cells
作者:Pranabesh Dutta、Hanok Park、Woo-Hyoung Lee、In-Nam Kang、Soo-Hyoung Lee
DOI:10.1016/j.orgel.2012.09.019
日期:2012.12
In this work, we have designed and synthesized a new naphtho[1,2-b:5,6-b′]dithiophene-containing enlarged π-conjugated donor–acceptor (D–A) small molecule, NDT(TTz)2, for use in solution-processed organic photovoltaics. NDT(TTz)2, which contains a thiophene-bridged naphtho[1,2-b:5,6-b′]dithiophene as the central fused core and triphenylamine-flanked thiophene thiazolothiazole as a spacer, was synthesized
在这项工作中,我们设计并合成了一种新的含有萘并[1,2- b:5,6- b' ]二噻吩的扩大π共轭供体-受体(D-A)小分子NDT(TTz)2,用于溶液处理的有机光伏。通过顺序的Suzuki和Stille合成了NDT(TTz)2,其中NDT(TTz)2包含噻吩桥接的萘并[1,2- b:5,6 - b' ]二噻吩作为中心稠合核心,三苯胺侧翼噻吩噻唑并噻唑作为间隔基偶联反应。NDT(TTz)2的热,物理化学和电化学性质已通过差示扫描量热法,热重分析法,紫外可见光谱,光致发光光谱,X射线衍射和循环伏安法进行了评估。如光伏应用所希望的那样,NDT(TTz)2具有良好的溶解性,热稳定性和井井有条的π-π堆叠结晶性。NDT(TTz)2的光学带隙和HOMO能级分别确定为2.0 eV和-5.23 eV。除了研究有机薄膜晶体管外,还通过与PC 71一起制造溶液处理的体异质结太阳能电池,研究了NDT(TTz)