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Please use this identifier to cite or link to this item: http://purl.org/purl/3177

Title: Fabrication and the study of zinc sulphide based electroluminescent devices
Authors: Jayaraj, M K
Dr.Girijavallabhan,C P
Keywords: Electroluminescence
Zinc
Sulphide
Electrode
TEFL devices
Issue Date: 20-Jun-1988
Publisher: Cochin University of Science and Technology
Abstract: This thesis contains the author's work in preparing efficient EL phosphors, the details of fabrication of low voltage operated thin film EL (TFEL) devices and DC TFEL devices. Some of the important work presented here are related to the white light emitting ZnS:Cu,Pr,Cl phosphor which can be colour tuned by changing the excitation frequency, observation of energy transfer from Cu/Ag ions to rare earth ions in ZnS:(Cu/Ag), RE,Cl phosphors, development of TFEL device which can be operated below 50V, optimization of the device parameters for long life, high brightness in terms of the active and insulating layer thicknesses, observation of dependence of threshold voltage for the onset of emission on frequency of excitation when a novel dielectric Eu2O3 film was used as insulator and the devices with multicolor emission using ZnS doped with rare earth as active layer. Characterization based on other devices based on ZnS:Sm, ZnS:Pr, ZnS:Dy and their emission characteristics are also illustrated
Description: Department of Physics, Cochin University of Science and Technology
URI: http://dyuthi.cusat.ac.in/purl/3177
Appears in Collections:Faculty of Sciences

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