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Organic/inorganic heterojunction based on conducting polymer and pulse-laser-deposited (PLD) ZnO

Published online by Cambridge University Press:  24 April 2015

Weining Wang
Affiliation:
Department of Physics, Seton Hall University, 400 South Orange Ave. South Orange, NJ 07079, U.S.A.
Leandro Gutierrez
Affiliation:
Department of Physics, Seton Hall University, 400 South Orange Ave. South Orange, NJ 07079, U.S.A.
Arya Nabizadeh
Affiliation:
Department of Physics, Seton Hall University, 400 South Orange Ave. South Orange, NJ 07079, U.S.A.
Mehmet A. Sahiner
Affiliation:
Department of Physics, Seton Hall University, 400 South Orange Ave. South Orange, NJ 07079, U.S.A.
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Abstract

Organic/inorganic heterojunctions have been fabricated by spin coating p-type poly (3, 4 ethylenedioxythiophene): poly (styrenesulfonate) (PEDOT:PSS) onto n-type zinc oxide (ZnO) films. The ZnO films were deposited onto indium tin oxide (ITO) coated glass by pulse laser deposition (PLD) technique. The current density-voltage (J-V) characteristics of the PLD-ZnO/PEDOT:PSS junction based on as-deposited PLD-ZnO film shows a good rectifying behavior with a rectification ratio of 156 at ±1 V, indicating the formation of a diode between ZnO and PEDOT:PSS. Using thermionic emission model, the ideality factor (n=2.1) and barrier height (0.66 eV) of the heterojunction were obtained. Those diode parameters are better than those of the chemical vapor deposited ZnO/PEDOT:PSS heterojunction reported elsewhere, indicating that PLD may be a promising technique on fabricating high quality ZnO/polymer heterojunctions.

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Articles
Copyright
Copyright © Materials Research Society 2015 

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References

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