JIUN-HAW LEEChen, Li-ChyongLi-ChyongChen2018-09-102018-09-10200800036951http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=ISI&KeyUT=WOS:000256706000076&KeyUID=WOS:000256706000076http://scholars.lib.ntu.edu.tw/handle/123456789/340775We demonstrate a low series resistance contact of gold (anode)/zinc- phthalocyznine in a reverse organic photovoltaic device aided by oxygen plasma treatment. The power conversion efficiency appreciated from 0.2% to 2.13%, post O2 plasma treatment, predominantly due to the reduction in the series resistance of the device. A depth profile of zinc from x-ray photoelectron spectroscopy study revealed a gold layer with graded zinc composition, instead of pure gold, to be an efficient hole-collector from the organic interface. The zinc alloying of the gold layer has clearly been promoted by the oxygen plasma treatment. ? 2008 American Institute of Physics.application/pdfapplication/pdf[SDGs]SDG3[SDGs]SDG7Direct energy conversion; Gold; Health; Molecular orbitals; Molecular spectroscopy; Nanostructured materials; Nonmetals; Oxygen; Photoelectron spectroscopy; Plasma (human); Plasma applications; Plasmas; Solar cells; Solar energy; Solar power generation; Spectrum analysis; X ray spectroscopy; Zinc; Zinc sulfide; American Institute of Physics (AIP); Collector (flotation); depth profiling; Gold layers; O2-plasma treatment; Organic interfaces; Organic photovoltaic; Organic solar cells (OSC); Oxygen plasma treatments; Power-conversion efficiency (PCE); Series resistance (ESR); X ray photoelectron spectroscopy (XPS); X ray photoelectron spectroscopyjournal article10.1063/1.2940236