Chemoresistive gas sensor
Abstract
A chemoresistive gas sensor is provided which has improved sensitivity. A layer of organic semiconductor is disposed between two electrodes which, in turn, are connected to a voltage source. High conductivity material is dispersed within the layer of organic semiconductor in the form of very small particles, or islands. The average interisland spacing is selected so that the predominant mode of current flow is by way of electron tunneling. Adsorption of gaseous contaminant onto the layer of organic semiconductor modulates the tunneling current in a quantitative manner.
- Inventors:
- Issue Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 5455550
- Application Number:
- ON: DE86013766
- Assignee:
- Dept. of Energy
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION; GAS ANALYSIS; TUNNEL EFFECT; ELECTRIC CONDUCTORS; ELECTRODES; ORGANIC SEMICONDUCTORS; MATERIALS; SEMICONDUCTOR MATERIALS; 440300* - Miscellaneous Instruments- (-1989)
Citation Formats
Hirschfeld, T B. Chemoresistive gas sensor. United States: N. p., 1985.
Web.
Hirschfeld, T B. Chemoresistive gas sensor. United States.
Hirschfeld, T B. Mon .
"Chemoresistive gas sensor". United States.
@article{osti_5455550,
title = {Chemoresistive gas sensor},
author = {Hirschfeld, T B},
abstractNote = {A chemoresistive gas sensor is provided which has improved sensitivity. A layer of organic semiconductor is disposed between two electrodes which, in turn, are connected to a voltage source. High conductivity material is dispersed within the layer of organic semiconductor in the form of very small particles, or islands. The average interisland spacing is selected so that the predominant mode of current flow is by way of electron tunneling. Adsorption of gaseous contaminant onto the layer of organic semiconductor modulates the tunneling current in a quantitative manner.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {9}
}
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