Chen, Mei-Rong3; Fan, Cong-Cheng3; Andersen, Thomas Rieks4; Dam, Henrik Friis5; Fu, Wei-Fei3; Lin, Yu-Ze6; Bundgaard, Eva1; Krebs, Frederik C1; Zhan, Xiao-Wei8; Chen, Hong-Zheng3
1 Department of Energy Conversion and Storage, Technical University of Denmark2 Functional organic materials, Department of Energy Conversion and Storage, Technical University of Denmark3 Zhejiang University4 Risø National Laboratory for Sustainable Energy, Technical University of Denmark5 Department of Micro- and Nanotechnology, Technical University of Denmark6 Chinese Academy of Sciences7 Peking University8 Peking University
A novel cross-linkable azide-functionalized diketopyrrolopyrrole based compound DPP(BT-N-3)(2) was designed and synthesized via Stille coupling. Cross-linking of such molecule could help us fabricate insoluble film which could be used to fabricate heterostructures through solution processing, without dissolving the pre-patterned layers. In order to investigate the photovoltaic performances of the newly synthesized compound, large area solar cells were produced by roll coating technique. Two set of devices were fabricated by employing DPP(BT-N-3)(2) as either an electron donor or acceptor. A best power conversion efficiency of 0.067%, combined with an open circuit voltage of 0.53 V, and a fill factor of 37.6% were obtained for the device with DPP(BT-N-3)(2) as an electron acceptor. In addition, we could prove that the large area small molecule based organic solar cells could be fabricated using roll coating, which could be used in the industries for large-scale of production. (C) 2014 Elsevier B.V. All rights reserved.
Synthetic Metals, 2014, Vol 195, p. 299-305
MATERIALS; PHYSICS,; POLYMER; DIKETOPYRROLOPYRROLE; BENZODITHIOPHENE; DERIVATIVES; ITO; Solvent-resistant; Roll-to-roll fabrication; Large area; Cross-linkable; Small molecule solar cells; Diketopyrrolopyrrole