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Issue 37, 2015
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Enhanced efficiency of polymer photovoltaic cells via the incorporation of a water-soluble naphthalene diimide derivative as a cathode interlayer

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Abstract

In this contribution, a novel cathode interlayer material (NDIO) based on naphthalene diimide was successfully prepared by a facile two-step reaction from commercially available compounds. NDIO exhibited excellent water solubility, high transparency in the visible light region, and well-matched molecular energy levels. By incorporating this novel water processed cathode interlayer, a high power conversion efficiency of 9.51% was recorded in PBDT-TS1/PC71BM-based polymer photovoltaic cells (PPCs), and the value is nearly 2-fold the device efficiency of PPCs without the cathode interlayer. More importantly, the insertion of the NDIO interlayer promotes the device efficiency of polymer/polymer photovoltaic cells based on PBDTTT-EFT/N2200 from 3.23% up to 5.77%. The successful applications in both polymer/PCBM and polymer/polymer blend-based inverted PPCs make NDIO a promising cathode interlayer for realizing aqueous processed polymer photovoltaic cells with high performance.

Graphical abstract: Enhanced efficiency of polymer photovoltaic cells via the incorporation of a water-soluble naphthalene diimide derivative as a cathode interlayer

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Publication details

The article was received on 17 Jul 2015, accepted on 11 Aug 2015 and first published on 11 Aug 2015


Article type: Paper
DOI: 10.1039/C5TC02172C
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Citation: J. Mater. Chem. C, 2015,3, 9565-9571
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    Enhanced efficiency of polymer photovoltaic cells via the incorporation of a water-soluble naphthalene diimide derivative as a cathode interlayer

    K. Zhao, L. Ye, W. Zhao, S. Zhang, H. Yao, B. Xu, M. Sun and J. Hou, J. Mater. Chem. C, 2015, 3, 9565
    DOI: 10.1039/C5TC02172C

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