Solution processed nickel oxide anodes for organic photovoltaic devices | Zendy

Bestoon T. Mustafa | Zendy; Jon Griffin | Zendy; Abdullah Alsulami | Zendy; David G. Lidzey | Zendy; Alastair Buckley | Zendy

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Solution processed nickel oxide anodes for organic photovoltaic devices

Author(s) -

Bestoon T. Mustafa,

Jon Griffin,

Abdullah Alsulami,

David G. Lidzey,

Alastair Buckley

Publication year - 2014

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.4865090

Subject(s) - non blocking i/o , nickel oxide , nickel , materials science , annealing (glass) , x ray photoelectron spectroscopy , thin film , work function , heterojunction , organic solar cell , chemical engineering , oxide , inorganic chemistry , catalysis , layer (electronics) , optoelectronics , metallurgy , nanotechnology , chemistry , organic chemistry , composite material , polymer , engineering

Nickel oxide thin films have been prepared from a nickel acetylacetonate (Ni(acac)) precursor for use in bulk heterojunction organic photovoltaic devices. The conversion of Ni(acac) to NiOx has been investigated. Oxygen plasma treatment of the NiO layer after annealing at 400 °C affords solar cell efficiencies of 5.2%. Photoelectron spectroscopy shows that high temperature annealing converts the Ni(acac) to a reduced form of nickel oxide. Additional oxygen plasma treatment further oxidizes the surface layers and deepens the NiO work function from 4.7 eV for the annealed film, to 5.0 eV allowing for efficient hole extraction at the organic interface.

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