Detection of CO using bulk ZnO Schottky rectifiers

B. S. Kang; S. Kim; F. Ren; K. Ip; Y. W. Heo; B. P. Gila; C. R. Abernathy; D. P. Norton; S. J. Pearton

doi:10.1007/s00339-004-2666-2

Detection of CO using bulk ZnO Schottky rectifiers

B. S. Kang
, S. Kim
, F. Ren
, K. Ip
, Y. W. Heo
, B. P. Gila
, C. R. Abernathy
, D. P. Norton
, S. J. Pearton

University of Florida

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

10 Scopus citations

Abstract

Bulk Pt/ZnO Schottky rectifiers show gas sensitivities for CO of 4% and 8%, respectively, at 150°C for 1 and 10% CO in N². The current or voltage changes are time dependent, with an activation energy of 40.7 kJ mol^-1. Over a limited range of partial pressures of CO (P _CO) in the ambient gas, the on-state resistance R of the sensor at fixed bias voltage decreased according to R = (R_O + A(P _CO)^0.5)^-1. where A is a constant and R _O is the resistance in N₂. Since these devices are also sensitive to H₂ and C₂H₄, the ZnO rectifiers appear promising for a range of gas-sensing applications.

Original language	English
Pages (from-to)	259-261
Number of pages	3
Journal	Applied Physics A: Materials Science and Processing
Volume	80
Issue number	2
DOIs	https://doi.org/10.1007/s00339-004-2666-2
State	Published - Feb 2005

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title = "Detection of CO using bulk ZnO Schottky rectifiers",

abstract = "Bulk Pt/ZnO Schottky rectifiers show gas sensitivities for CO of 4\% and 8\%, respectively, at 150°C for 1 and 10\% CO in N2. The current or voltage changes are time dependent, with an activation energy of 40.7 kJ mol-1. Over a limited range of partial pressures of CO (P CO) in the ambient gas, the on-state resistance R of the sensor at fixed bias voltage decreased according to R = (RO + A(P CO)0.5)-1. where A is a constant and R O is the resistance in N2. Since these devices are also sensitive to H2 and C2H4, the ZnO rectifiers appear promising for a range of gas-sensing applications.",

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T1 - Detection of CO using bulk ZnO Schottky rectifiers

AU - Kang, B. S.

AU - Kim, S.

AU - Ren, F.

AU - Ip, K.

AU - Heo, Y. W.

AU - Gila, B. P.

AU - Abernathy, C. R.

AU - Norton, D. P.

AU - Pearton, S. J.

PY - 2005/2

Y1 - 2005/2

N2 - Bulk Pt/ZnO Schottky rectifiers show gas sensitivities for CO of 4% and 8%, respectively, at 150°C for 1 and 10% CO in N2. The current or voltage changes are time dependent, with an activation energy of 40.7 kJ mol-1. Over a limited range of partial pressures of CO (P CO) in the ambient gas, the on-state resistance R of the sensor at fixed bias voltage decreased according to R = (RO + A(P CO)0.5)-1. where A is a constant and R O is the resistance in N2. Since these devices are also sensitive to H2 and C2H4, the ZnO rectifiers appear promising for a range of gas-sensing applications.

AB - Bulk Pt/ZnO Schottky rectifiers show gas sensitivities for CO of 4% and 8%, respectively, at 150°C for 1 and 10% CO in N2. The current or voltage changes are time dependent, with an activation energy of 40.7 kJ mol-1. Over a limited range of partial pressures of CO (P CO) in the ambient gas, the on-state resistance R of the sensor at fixed bias voltage decreased according to R = (RO + A(P CO)0.5)-1. where A is a constant and R O is the resistance in N2. Since these devices are also sensitive to H2 and C2H4, the ZnO rectifiers appear promising for a range of gas-sensing applications.

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JO - Applied Physics A: Materials Science and Processing

JF - Applied Physics A: Materials Science and Processing

IS - 2

ER -

Detection of CO using bulk ZnO Schottky rectifiers

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