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Browse Prior Art Database

Increasing Low Energy Cathodoluminescence of ZnO Phosphor

IP.com Disclosure Number: IPCOM000077983D
Original Publication Date: 1972-Oct-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Pennebaker, W: AUTHOR

Abstract

A method is taught for increasing low-energy cathodoluminescence of ZnO, so that larger phosphor areas and reduced power dissipation in ZnO-plasma displays can be achieved.

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Increasing Low Energy Cathodoluminescence of ZnO Phosphor

A method is taught for increasing low-energy cathodoluminescence of ZnO, so that larger phosphor areas and reduced power dissipation in ZnO-plasma displays can be achieved.

The method consists of exposing the ZnO phosphor to a hydrogen discharge for a period between a few minutes to an hour. A plasma electron source can be used to generate the H(2) discharged.

It was observed that after exposing the ZnO to a H(2) discharge, the power efficiency of the ZnO was about 20 lumens/watt at +5 volts bias. Moreover, the increased efficiency is stable, such H(2) treated ZnO having been operated as an electroluminescent for 200 hours with the efficiency showing no degradation.

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