Synthesis and photovoltaic properties of a simple non-fused small molecule acceptor

被引:35
作者
Li, Xinxin [1 ]
Xu, Zhuo [1 ]
Guo, Xia [1 ]
Fan, Qunping [1 ]
Zhang, Maojie [1 ]
Li, Yongfang [1 ,2 ]
机构
[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Lab Adv Optoelect Mat, Suzhou 215123, Peoples R China
[2] Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, CAS Res Educ Ctr Excellence Mol Sci, Beijing 100190, Peoples R China
基金
中国国家自然科学基金;
关键词
Non-fused small molecule acceptors; n-type organic semiconductors; Polymer solar cells; POLYMER SOLAR-CELLS; RING ELECTRON-ACCEPTOR; OPEN-CIRCUIT VOLTAGE; LOW-ENERGY LOSS; NON-FULLERENE ACCEPTOR; HIGH-EFFICIENCY; DESIGN; SEMICONDUCTORS; OPTIMIZATION; ENABLES;
D O I
10.1016/j.orgel.2018.04.005
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In this work, a new non-fused small molecule acceptor Ph-IC based on alkoxyl benzene and IC units was synthesized for photovoltaic applications. The small molecule Ph-IC has a very simple chemical structure and is easily synthesized. Benefited from the coplanar conjugated structure, the 0 H and S H non-covalent interactions, Ph-IC exhibits a narrow optical bandgap of 1.62 eV and a medium electron mobility of 1.84 x 10(-4) cm(2)v(-1)s(-1) . When using Ph-IC as acceptor and a wide-bandgap polymer PBFTZ as donor, the devices show a maximum PCE of 5.68% with V-oc of 0.89 V, J(sc) of 12.37 mA cm(-2) and FF of 51.5% under the illumination of AM 1.5 G at 100 mW/cm(2) . This work demonstrates that the simple-structured and low cost non-fused group can also be used as building blocks in high performation n-OS acceptors.
引用
收藏
页码:133 / 138
页数:6
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