Electrical charge conductivity behavior of electrodeposited Cu 2O/ZnO heterojunction thin films on PET flexible substrates by impedance spectroscopy analysis

Qiang Li; Mengmeng Xu; Huiqing Fan; Hairong Wang; Biaolin Peng; Changbai Long; Yuchun Zhai

doi:10.1007/s10853-012-7008-8

Electrical charge conductivity behavior of electrodeposited Cu ₂O/ZnO heterojunction thin films on PET flexible substrates by impedance spectroscopy analysis

Qiang Li, Mengmeng Xu, Huiqing Fan, Hairong Wang, Biaolin Peng, Changbai Long, Yuchun Zhai

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

14 Scopus citations

Abstract

The bottom-up self-assembly Cu₂O/ZnO heterojunction thin films electrodeposited on indium tin oxide flexible substrate (polyethylene terephthalate, PET) have been investigated by impedance spectroscopy. It is used to study the electric conductivity of the Cu₂O/ZnO heterojunction thin films combined electric modulus and impedance plots. The electric modulus and impedance as a function of the frequency analysis show the distribution of the relaxation times due to the hopping of charge carriers among defects in the Cu₂O/ZnO heterojunction thin films. The values of activation energies derived from the electric modulus and impedance are found to be 0.42 and 0.40 eV, respectively, which is close to the activation energy (0.28 eV) of dc electrical conductivity and activation energy of ac conductivity (0.45-0.14 eV at the range of 100 Hz-1 MHz) in the temperature range over 303-423 K.

Original language	English
Pages (from-to)	3334-3340
Number of pages	7
Journal	Journal of Materials Science
Volume	48
Issue number	9
DOIs	https://doi.org/10.1007/s10853-012-7008-8
State	Published - May 2013

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title = "Electrical charge conductivity behavior of electrodeposited Cu 2O/ZnO heterojunction thin films on PET flexible substrates by impedance spectroscopy analysis",

abstract = "The bottom-up self-assembly Cu2O/ZnO heterojunction thin films electrodeposited on indium tin oxide flexible substrate (polyethylene terephthalate, PET) have been investigated by impedance spectroscopy. It is used to study the electric conductivity of the Cu2O/ZnO heterojunction thin films combined electric modulus and impedance plots. The electric modulus and impedance as a function of the frequency analysis show the distribution of the relaxation times due to the hopping of charge carriers among defects in the Cu2O/ZnO heterojunction thin films. The values of activation energies derived from the electric modulus and impedance are found to be 0.42 and 0.40 eV, respectively, which is close to the activation energy (0.28 eV) of dc electrical conductivity and activation energy of ac conductivity (0.45-0.14 eV at the range of 100 Hz-1 MHz) in the temperature range over 303-423 K.",

author = "Qiang Li and Mengmeng Xu and Huiqing Fan and Hairong Wang and Biaolin Peng and Changbai Long and Yuchun Zhai",

year = "2013",

month = may,

doi = "10.1007/s10853-012-7008-8",

language = "英语",

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journal = "Journal of Materials Science",

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TY - JOUR

T1 - Electrical charge conductivity behavior of electrodeposited Cu 2O/ZnO heterojunction thin films on PET flexible substrates by impedance spectroscopy analysis

AU - Li, Qiang

AU - Xu, Mengmeng

AU - Fan, Huiqing

AU - Wang, Hairong

AU - Peng, Biaolin

AU - Long, Changbai

AU - Zhai, Yuchun

PY - 2013/5

Y1 - 2013/5

N2 - The bottom-up self-assembly Cu2O/ZnO heterojunction thin films electrodeposited on indium tin oxide flexible substrate (polyethylene terephthalate, PET) have been investigated by impedance spectroscopy. It is used to study the electric conductivity of the Cu2O/ZnO heterojunction thin films combined electric modulus and impedance plots. The electric modulus and impedance as a function of the frequency analysis show the distribution of the relaxation times due to the hopping of charge carriers among defects in the Cu2O/ZnO heterojunction thin films. The values of activation energies derived from the electric modulus and impedance are found to be 0.42 and 0.40 eV, respectively, which is close to the activation energy (0.28 eV) of dc electrical conductivity and activation energy of ac conductivity (0.45-0.14 eV at the range of 100 Hz-1 MHz) in the temperature range over 303-423 K.

AB - The bottom-up self-assembly Cu2O/ZnO heterojunction thin films electrodeposited on indium tin oxide flexible substrate (polyethylene terephthalate, PET) have been investigated by impedance spectroscopy. It is used to study the electric conductivity of the Cu2O/ZnO heterojunction thin films combined electric modulus and impedance plots. The electric modulus and impedance as a function of the frequency analysis show the distribution of the relaxation times due to the hopping of charge carriers among defects in the Cu2O/ZnO heterojunction thin films. The values of activation energies derived from the electric modulus and impedance are found to be 0.42 and 0.40 eV, respectively, which is close to the activation energy (0.28 eV) of dc electrical conductivity and activation energy of ac conductivity (0.45-0.14 eV at the range of 100 Hz-1 MHz) in the temperature range over 303-423 K.

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DO - 10.1007/s10853-012-7008-8

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SN - 0022-2461

VL - 48

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EP - 3340

JO - Journal of Materials Science

JF - Journal of Materials Science

IS - 9

ER -

Electrical charge conductivity behavior of electrodeposited Cu ₂O/ZnO heterojunction thin films on PET flexible substrates by impedance spectroscopy analysis

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