Relative Humidity Sensing Properties Of Cu{sub 2}O Doped ZnO Nanocomposite

Journal Article · Mon Jun 29 00:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3183474· OSTI ID:21316835

Pandey, N K; Tiwari, K; Tripathi, A; Roy, A; Rai, A; Awasthi, P ^[1]

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1. Sensors and Materials Research Laboratory, Department of Physics, University Of Lucknow, U.P., Pin-226007 (India)

In this paper we report application of Cu{sub 2}O doped ZnO composite prepared by solid state reaction route as humidity sensor. Pellet samples of ZnO-Cu{sub 2}O nanocrystalline powders with 2, 5 and 10 weight% of Cu{sub 2}O in ZnO have been prepared. Pellets have been annealed at temperatures of 200-500 deg. C and exposed to humidity. It is observed that as relative humidity increases, resistance of the pellet decreases for the humidity from 10% to 90%. Sample with 5% of Cu{sub 2}O doped in ZnO and annealed at 500 deg. C shows best results with sensitivity of 1.50 M{omega}/%RH. In this case the hysteresis is low and the reproducibility high, making it the suitable candidate for humidity sensing.

• OSTI ID: 21316835
• Journal Information: AIP Conference Proceedings, Vol. 1147, Issue 1; Conference: ICTOPON-2009: International conference on transport and optical properties of nanomaterials, Allahabad (India), 5-8 Jan 2009; Other Information: DOI: 10.1063/1.3183474; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
ANNEALING
COMPOSITE MATERIALS
COPPER OXIDES
CRYSTALS
DOPED MATERIALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
HUMIDITY
HYSTERESIS
NANOSTRUCTURES
PELLETS
POWDERS
SENSITIVITY
SENSORS
ZINC OXIDES