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Issue 35, 2014
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High voltage hybrid organic photovoltaics using a zinc oxide acceptor and a subphthalocyanine donor

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Abstract

We demonstrate hybrid organic photovoltaic (HOPV) bilayer devices with very high open circuit voltages (VOC) of 1.18 V based on a sol–gel processed zinc oxide (ZnO) acceptor and a vacuum deposited boron subphthalocyanine chloride (SubPc) donor layer. X-ray photoelectron spectroscopy (XPS) and Kelvin Probe (KP) measurements of the ZnO/SubPc interface show that the ZnO preparation conditions have a significant impact on the film composition and the electronic properties of the interface, in particular the work function and interface gap energy. Low temperature processing at 120 °C resulted in a ZnO work function of 3.20 eV and the highest VOC of 1.18 V, a consequence of the increased interface gap energy.

Graphical abstract: High voltage hybrid organic photovoltaics using a zinc oxide acceptor and a subphthalocyanine donor

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Publication details

The article was received on 22 Jun 2014, accepted on 01 Jul 2014 and first published on 03 Jul 2014


Article type: Paper
DOI: 10.1039/C4CP02733G
Citation: Phys. Chem. Chem. Phys., 2014,16, 18926-18932
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    High voltage hybrid organic photovoltaics using a zinc oxide acceptor and a subphthalocyanine donor

    C. A. Dearden, M. Walker, N. Beaumont, I. Hancox, N. K. Unsworth, P. Sullivan, C. F. McConville and T. S. Jones, Phys. Chem. Chem. Phys., 2014, 16, 18926
    DOI: 10.1039/C4CP02733G

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