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Field emission properties of low-temperature, hydrothermally grown tungsten oxide

Field emission properties of low-temperature, hydrothermally grown tungsten oxide
Field emission properties of low-temperature, hydrothermally grown tungsten oxide
Tungsten oxide layers have been prepared on conductive glass substrates using aqueous chemical growth from a sodium tungstate precursor at low-temperature hydrothermal conditions. The deposits were then tested as cold electron emitters. Traceable layers could be deposited only within a narrow pH range of 1.5-2 at a time length not exceeding 4 h. Transmittance in the visible spectrum was found to decrease with deposition time. The presence of both monoclinic and hexagonal phases was always detected. At the longest deposition times and highest precursor concentrations, morphologies comprise randomly oriented spikes or rods. The overall emission performance is found to improve with growth time and precursor concentration. The role of morphology on the emission properties of the films is discussed.

Field Emission Properties of Low-Temperature, Hydrothermally Grown Tungsten Oxide. Available from: https://www.researchgate.net/publication/51234194_Field_Emission_Properties_of_Low-Temperature_Hydrothermally_Grown_Tungsten_Oxide [accessed May 7, 2015].
1944-8244
2726-2731
Trapatseli, Maria
1aea9f6b-2790-48b4-85d5-e600e60f6406
Vernardou, Dimitra
da8d73b2-b191-4687-bad5-b20a04445a84
Tzanetakis, Panagiotis
c899f565-73dd-4f15-b0df-6b94cb0f79f5
Spanakis, Manolis
7317ddec-26ee-43b6-9309-7b542d8f403e
Trapatseli, Maria
1aea9f6b-2790-48b4-85d5-e600e60f6406
Vernardou, Dimitra
da8d73b2-b191-4687-bad5-b20a04445a84
Tzanetakis, Panagiotis
c899f565-73dd-4f15-b0df-6b94cb0f79f5
Spanakis, Manolis
7317ddec-26ee-43b6-9309-7b542d8f403e

Trapatseli, Maria, Vernardou, Dimitra, Tzanetakis, Panagiotis and Spanakis, Manolis (2011) Field emission properties of low-temperature, hydrothermally grown tungsten oxide. ACS Applied Materials & Interfaces, 3 (7), 2726-2731. (doi:10.1021/am200519w).

Record type: Article

Abstract

Tungsten oxide layers have been prepared on conductive glass substrates using aqueous chemical growth from a sodium tungstate precursor at low-temperature hydrothermal conditions. The deposits were then tested as cold electron emitters. Traceable layers could be deposited only within a narrow pH range of 1.5-2 at a time length not exceeding 4 h. Transmittance in the visible spectrum was found to decrease with deposition time. The presence of both monoclinic and hexagonal phases was always detected. At the longest deposition times and highest precursor concentrations, morphologies comprise randomly oriented spikes or rods. The overall emission performance is found to improve with growth time and precursor concentration. The role of morphology on the emission properties of the films is discussed.

Field Emission Properties of Low-Temperature, Hydrothermally Grown Tungsten Oxide. Available from: https://www.researchgate.net/publication/51234194_Field_Emission_Properties_of_Low-Temperature_Hydrothermally_Grown_Tungsten_Oxide [accessed May 7, 2015].

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More information

Published date: 20 June 2011
Organisations: Nanoelectronics and Nanotechnology

Identifiers

Local EPrints ID: 376833
URI: https://eprints.soton.ac.uk/id/eprint/376833
ISSN: 1944-8244
PURE UUID: 38d6bcd6-abff-4569-afa7-a2ac7a21df2d

Catalogue record

Date deposited: 13 May 2015 11:49
Last modified: 15 Jul 2019 21:21

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Contributors

Author: Maria Trapatseli
Author: Dimitra Vernardou
Author: Panagiotis Tzanetakis
Author: Manolis Spanakis

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