Journal
NANO ENERGY
Volume 27, Issue -, Pages 430-438Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2016.07.019
Keywords
Non-fullerene acceptor; Indacenodithiophene; Polymer solar cells
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Funding
- National Natural Science Foundation of China [21504062, 21572152]
- China Postdoctoral Science Foundation [2015M581853]
- Jiangsu Province Postdoctoral Science Foundation [1501024B]
- Vinnova [2015-04751]
- China Scholarship Council (CSC) [201306730002]
- Swedish Research Council (VR) [621-2013-5561]
- Swedish Energy Agency [EM 42033-1]
- Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University (Faculty Grant SFO-Mat-LiU) [2009 00971]
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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A non-fullerene electron acceptor bearing a novel backbone with fused 10-heterocyclic ring (in-dacenodithiopheno-indacenodiselenophene), denoted by IDTIDSe-IC is developed for fullerene free polymer solar cells. IDTIDSe-IC exhibits a low band gap (E-g=1.52 eV) and strong absorption in the 600850 nm region. Combining with a large band gap polymer J51 (E-g=1.91 eV) as donor, broad absorption coverage from 300 nm to 800 nm is obtained due to complementary absorption of J51 and IDTIDSe-IC, which enables a high PCE of 8.02% with a V-oc of 0.91 V, a J(SC) of 15.16 mA/cm(2) and a FF of 58.0% in the corresponding PSCs. Moreover, the EQE of 50-65% is achieved in the absorption range of IDTIDSe-IC with only about 0.1 eV HOMO difference between J51 and IDTIDSe-IC. (C) 2016 Elsevier Ltd. All rights reserved.
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