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

Hyo Joong Kim; Hyun Hwi Lee; Jinha Kal; Jungseok Hahn; Han Ki Kim

doi:10.1063/1.4935187

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

Hyo Joong Kim, Hyun Hwi Lee, Jinha Kal, Jungseok Hahn, Han Ki Kim

Research output: Contribution to journal › Article › peer-review

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Abstract

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.

Original language	English
Article number	107236
Journal	AIP Advances
Volume	5
Issue number	10
DOIs	https://doi.org/10.1063/1.4935187
State	Published - 1 Oct 2015
Externally published	Yes

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@article{f4012ddbaafe4483bff02f428952dc1a,

title = "Transparent ITO/Ag-Pd-Cu/ITO multilayer cathode use in inverted organic solar cells",

abstract = "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.",

author = "Kim, \{Hyo Joong\} and Lee, \{Hyun Hwi\} and Jinha Kal and Jungseok Hahn and Kim, \{Han Ki\}",

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doi = "10.1063/1.4935187",

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T1 - Transparent ITO/Ag-Pd-Cu/ITO multilayer cathode use in inverted organic solar cells

AU - Kim, Hyo Joong

AU - Lee, Hyun Hwi

AU - Kal, Jinha

AU - Hahn, Jungseok

AU - Kim, Han Ki

PY - 2015/10/1

Y1 - 2015/10/1

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/84946139754

U2 - 10.1063/1.4935187

DO - 10.1063/1.4935187

M3 - Article

AN - SCOPUS:84946139754

SN - 2158-3226

VL - 5

JO - AIP Advances

JF - AIP Advances

IS - 10

M1 - 107236

ER -

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

Abstract

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