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Photo-cross-linked perylene diimide derivative materials as efficient electron transporting layers in inverted polymer solar cells

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Abstract

We present an efficient and stable interfacial material based on a water-soluble perylene diimide derivative functionalized with ionic and methacrylate groups (abbreviated as PDIM), which can be stabilized by the photo-polymerization of diacrylate groups at both ends of the side chain in the PDIM. The characteristics of the photo-cross-linked PDIM films were examined using absorption spectra, cyclic voltammetry, work function, and surface morphology. The feasibility of the photo-cross-linked PDIM films as a novel electron transporting layer (ETL) in polymer solar cells (PSCs) was also investigated. The PTB7-Th:PC71BM-based PSC using the PDIM as the ETL achieved the excellent power conversion efficiency of 9.44% similar to the conventional polyethylenimine ethoxylated (PEIE) and better than ZnO. Furthermore, the PSC with the PDIM films exhibited a similar lifetime to that of the PEIE-based device. This approach suggests that the photo-cross-linked PDIM film could be regarded as a promising interfacial material for fabricating highly efficient PSCs.

Graphical abstract: Photo-cross-linked perylene diimide derivative materials as efficient electron transporting layers in inverted polymer solar cells

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Publication details

The article was received on 06 Sep 2017, accepted on 01 Nov 2017 and first published on 01 Nov 2017


Article type: Communication
DOI: 10.1039/C7NR06632E
Citation: Nanoscale, 2017, Advance Article
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    Photo-cross-linked perylene diimide derivative materials as efficient electron transporting layers in inverted polymer solar cells

    Y. Noh, Y. Choi, J. Jeong, S. Kim, K. Jeong and S. Na, Nanoscale, 2017, Advance Article , DOI: 10.1039/C7NR06632E

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