High voltage hybrid organic photovoltaics using a zinc oxide acceptor and a subphthalocyanine donor.

نویسندگان

  • Chloe Argent Dearden
  • Marc Walker
  • Nicola Beaumont
  • Ian Hancox
  • Natalie K Unsworth
  • Paul Sullivan
  • Chris F McConville
  • Tim S Jones
چکیده

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.

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عنوان ژورنال:
  • Physical chemistry chemical physics : PCCP

دوره 16 35  شماره 

صفحات  -

تاریخ انتشار 2014