Humidity sensitive electrical properties of a novel ceramic heterocontact structure ZnO/BaPb0·8Bi0·2O3

Alexander Glot; Bartolomeo Di Bartolomeo; Enrico Traversa

doi:10.1016/s0955-2219(98)00302-1

Humidity sensitive electrical properties of a novel ceramic heterocontact structure ZnO/BaPb_0·8Bi_0·2O₃

Alexander Glot, Bartolomeo Di Bartolomeo, Enrico Traversa^*

^*Corresponding author for this work

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

11 Scopus citations

Abstract

The humidity dependence of the voltage-current characteristics of nonsymmetrical and symmetrical heterocontacts ZnO/BaPb_0·8Bi_0·2O₃, ZnO/BaPb_0·8Bi_0·2O₃/ZnO and ZnO/ZnO have been studied at fixed temperature in air with different relative humidity values. Nonlinear characteristics have been observed for all the contacts at any humidity values. The increase in the nonlinearity coefficient for the ZnO/BaPb_0·8Bi_0·2O₃/ZnO contact with respect to the ZnO/ZnO contact, and the voltage-current relationship at forward bias for ZnO/BaPb_0·8Bi_0·2O₃ heterocontacts are attributed to surface states. The increase in relative humidity causes the decrease in the Schottky potential barrier height, thereby resulting in a redistribution of the voltage drop at the heterocontact interface and in the current growth at lower voltages.

Original language	English (US)
Pages (from-to)	715-719
Number of pages	5
Journal	Journal of the European Ceramic Society
Volume	19
Issue number	6-7
DOIs	https://doi.org/10.1016/s0955-2219(98)00302-1
State	Published - Jun 1999
Externally published	Yes

Keywords

Electrical conductivity
Heterocontacts
Interfaces
Sensors
ZnO

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

Access to Document

10.1016/s0955-2219(98)00302-1

Cite this

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title = "Humidity sensitive electrical properties of a novel ceramic heterocontact structure ZnO/BaPb0·8Bi0·2O3",

abstract = "The humidity dependence of the voltage-current characteristics of nonsymmetrical and symmetrical heterocontacts ZnO/BaPb0·8Bi0·2O3, ZnO/BaPb0·8Bi0·2O3/ZnO and ZnO/ZnO have been studied at fixed temperature in air with different relative humidity values. Nonlinear characteristics have been observed for all the contacts at any humidity values. The increase in the nonlinearity coefficient for the ZnO/BaPb0·8Bi0·2O3/ZnO contact with respect to the ZnO/ZnO contact, and the voltage-current relationship at forward bias for ZnO/BaPb0·8Bi0·2O3 heterocontacts are attributed to surface states. The increase in relative humidity causes the decrease in the Schottky potential barrier height, thereby resulting in a redistribution of the voltage drop at the heterocontact interface and in the current growth at lower voltages.",

keywords = "Electrical conductivity, Heterocontacts, Interfaces, Sensors, ZnO",

author = "Alexander Glot and {Di Bartolomeo}, Bartolomeo and Enrico Traversa",

year = "1999",

month = jun,

doi = "10.1016/s0955-2219(98)00302-1",

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volume = "19",

pages = "715--719",

journal = "Journal of the European Ceramic Society",

issn = "0955-2219",

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}

TY - JOUR

T1 - Humidity sensitive electrical properties of a novel ceramic heterocontact structure ZnO/BaPb0·8Bi0·2O3

AU - Glot, Alexander

AU - Di Bartolomeo, Bartolomeo

AU - Traversa, Enrico

PY - 1999/6

Y1 - 1999/6

N2 - The humidity dependence of the voltage-current characteristics of nonsymmetrical and symmetrical heterocontacts ZnO/BaPb0·8Bi0·2O3, ZnO/BaPb0·8Bi0·2O3/ZnO and ZnO/ZnO have been studied at fixed temperature in air with different relative humidity values. Nonlinear characteristics have been observed for all the contacts at any humidity values. The increase in the nonlinearity coefficient for the ZnO/BaPb0·8Bi0·2O3/ZnO contact with respect to the ZnO/ZnO contact, and the voltage-current relationship at forward bias for ZnO/BaPb0·8Bi0·2O3 heterocontacts are attributed to surface states. The increase in relative humidity causes the decrease in the Schottky potential barrier height, thereby resulting in a redistribution of the voltage drop at the heterocontact interface and in the current growth at lower voltages.

AB - The humidity dependence of the voltage-current characteristics of nonsymmetrical and symmetrical heterocontacts ZnO/BaPb0·8Bi0·2O3, ZnO/BaPb0·8Bi0·2O3/ZnO and ZnO/ZnO have been studied at fixed temperature in air with different relative humidity values. Nonlinear characteristics have been observed for all the contacts at any humidity values. The increase in the nonlinearity coefficient for the ZnO/BaPb0·8Bi0·2O3/ZnO contact with respect to the ZnO/ZnO contact, and the voltage-current relationship at forward bias for ZnO/BaPb0·8Bi0·2O3 heterocontacts are attributed to surface states. The increase in relative humidity causes the decrease in the Schottky potential barrier height, thereby resulting in a redistribution of the voltage drop at the heterocontact interface and in the current growth at lower voltages.

KW - Electrical conductivity

KW - Heterocontacts

KW - Interfaces

KW - Sensors

KW - ZnO

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