Transparent ITO/Ag-Pd-Cu/ITO multilayer cathode use in inverted organic solar cells | Zendy

Hyo-Joong Kim | Zendy; Hyun Hwi Lee | Zendy; Jinha Kal | Zendy; Jungseok Hahn | Zendy; HanKi Kim | Zendy

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Transparent ITO/Ag-Pd-Cu/ITO multilayer cathode use in inverted organic solar cells

Author(s) -

Hyo-Joong Kim,

Hyun Hwi Lee,

Jinha Kal,

Jungseok Hahn,

HanKi Kim

Publication year - 2015

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4935187

Subject(s) - materials science , cathode , organic solar cell , annealing (glass) , optoelectronics , oled , transmittance , sheet resistance , layer (electronics) , nanotechnology , composite material , chemistry , polymer

The characteristics of transparent ITO/Ag-Pd-Cu (APC)/ITO multilayer cathodes were investigated for use in inverted organic solar cells (IOSCs). The insertion of an APC interlayer into the ITO film effectively led to crystallization of the top ITO layer, unlike that in the Ag interlayer, and resulted in a low sheet resistance of 6.55 Ohm/square and a high optical transmittance of 84.14% without post annealing. In addition, the alloying of the Pd and Cu elements into Ag prevented agglomeration and oxidization of the metal interlayer and led to more stable ITO/APC/ITO films under ambient conditions. The microstructure and interfacial structure of the transparent ITO/APC/ITO cathode in the IOSCs were examined in detail by synchrotron X-ray scattering and high resolution transmission electron microscopy. Furthermore, we suggested a possible mechanism to explain the lower PCE of the IOSCs with an ITO/APC/ITO cathode than that of a reference IOSC with a crystalline ITO cathode using the external quantum efficiency of the IOSCs

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