Highly transparent vanadium oxide-graded indium zinc oxide electrodes for flexible organic solar cells

Eun Hye Ko; Han Ki Kim

doi:10.1016/j.tsf.2015.11.067

Highly transparent vanadium oxide-graded indium zinc oxide electrodes for flexible organic solar cells

Eun Hye Ko
, Han Ki Kim

Kyung Hee University

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

3 Scopus citations

Abstract

We investigated characteristics of amorphous V₂O₅-graded InZnO (IZO) films to use as a flexible anode for flexible organic solar cells (FOSCs). Graded sputtering of the V₂O₅ layer on the IZO layer produced V₂O₅-graded IZO anodes (VGIZO) with a sheet resistance of 42.14 Ω/square, a resistivity of 6.32 × 10^-4 Ω cm, and an optical transmittance of 82.15%, as well as good mechanical flexibility. In addition, the VGIZO electrode showed a greater work function of 5.2 eV than that (4.9 eV) of an IZO anode, which is beneficial for hole extraction from an organic active layer. Due to the higher work function of the VGIZO electrodes, FOSCs fabricated on the flexible VGIZO anode exhibited a higher power conversion efficiency 2.753% than that of FOSCs on the IZO anode. This indicates that the V₂O₅ graded sputtering is a promising technique to increase the work function of the IZO anode without change in sheet resistance and transmittance.

Original language	English
Pages (from-to)	2-6
Number of pages	5
Journal	Thin Solid Films
Volume	601
DOIs	https://doi.org/10.1016/j.tsf.2015.11.067
State	Published - 29 Feb 2016
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Flexibility
Flexible Organic Solar Cells
Indium Zinc Oxide
Vanadium Oxide
Work function

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10.1016/j.tsf.2015.11.067

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@article{3f21f1a31bd24a3b84006bab72e0d569,

title = "Highly transparent vanadium oxide-graded indium zinc oxide electrodes for flexible organic solar cells",

abstract = "We investigated characteristics of amorphous V2O5-graded InZnO (IZO) films to use as a flexible anode for flexible organic solar cells (FOSCs). Graded sputtering of the V2O5 layer on the IZO layer produced V2O5-graded IZO anodes (VGIZO) with a sheet resistance of 42.14 Ω/square, a resistivity of 6.32 × 10-4 Ω cm, and an optical transmittance of 82.15\%, as well as good mechanical flexibility. In addition, the VGIZO electrode showed a greater work function of 5.2 eV than that (4.9 eV) of an IZO anode, which is beneficial for hole extraction from an organic active layer. Due to the higher work function of the VGIZO electrodes, FOSCs fabricated on the flexible VGIZO anode exhibited a higher power conversion efficiency 2.753\% than that of FOSCs on the IZO anode. This indicates that the V2O5 graded sputtering is a promising technique to increase the work function of the IZO anode without change in sheet resistance and transmittance.",

keywords = "Flexibility, Flexible Organic Solar Cells, Indium Zinc Oxide, Vanadium Oxide, Work function",

author = "Ko, \{Eun Hye\} and Kim, \{Han Ki\}",

year = "2016",

month = feb,

day = "29",

doi = "10.1016/j.tsf.2015.11.067",

language = "English",

volume = "601",

pages = "2--6",

journal = "Thin Solid Films",

issn = "0040-6090",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Highly transparent vanadium oxide-graded indium zinc oxide electrodes for flexible organic solar cells

AU - Ko, Eun Hye

AU - Kim, Han Ki

PY - 2016/2/29

Y1 - 2016/2/29

N2 - We investigated characteristics of amorphous V2O5-graded InZnO (IZO) films to use as a flexible anode for flexible organic solar cells (FOSCs). Graded sputtering of the V2O5 layer on the IZO layer produced V2O5-graded IZO anodes (VGIZO) with a sheet resistance of 42.14 Ω/square, a resistivity of 6.32 × 10-4 Ω cm, and an optical transmittance of 82.15%, as well as good mechanical flexibility. In addition, the VGIZO electrode showed a greater work function of 5.2 eV than that (4.9 eV) of an IZO anode, which is beneficial for hole extraction from an organic active layer. Due to the higher work function of the VGIZO electrodes, FOSCs fabricated on the flexible VGIZO anode exhibited a higher power conversion efficiency 2.753% than that of FOSCs on the IZO anode. This indicates that the V2O5 graded sputtering is a promising technique to increase the work function of the IZO anode without change in sheet resistance and transmittance.

AB - We investigated characteristics of amorphous V2O5-graded InZnO (IZO) films to use as a flexible anode for flexible organic solar cells (FOSCs). Graded sputtering of the V2O5 layer on the IZO layer produced V2O5-graded IZO anodes (VGIZO) with a sheet resistance of 42.14 Ω/square, a resistivity of 6.32 × 10-4 Ω cm, and an optical transmittance of 82.15%, as well as good mechanical flexibility. In addition, the VGIZO electrode showed a greater work function of 5.2 eV than that (4.9 eV) of an IZO anode, which is beneficial for hole extraction from an organic active layer. Due to the higher work function of the VGIZO electrodes, FOSCs fabricated on the flexible VGIZO anode exhibited a higher power conversion efficiency 2.753% than that of FOSCs on the IZO anode. This indicates that the V2O5 graded sputtering is a promising technique to increase the work function of the IZO anode without change in sheet resistance and transmittance.

KW - Flexibility

KW - Flexible Organic Solar Cells

KW - Indium Zinc Oxide

KW - Vanadium Oxide

KW - Work function

UR - https://www.scopus.com/pages/publications/84959524254

U2 - 10.1016/j.tsf.2015.11.067

DO - 10.1016/j.tsf.2015.11.067

M3 - Article

AN - SCOPUS:84959524254

SN - 0040-6090

VL - 601

SP - 2

EP - 6

JO - Thin Solid Films

JF - Thin Solid Films

ER -

Highly transparent vanadium oxide-graded indium zinc oxide electrodes for flexible organic solar cells

Abstract

UN SDGs

Keywords

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