skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: The Effect of Electric Fields on Cathodoluminescence from Phosphors

Abstract

When external electric fields are applied to phosphors the cathodoluminescence (CL) at low beam energies is strongly affected. This experiment has been carried out on a variety of common phosphors used in cathode ray tube applications, and the electron beam energy, beam current, and electric field dependence of the CL are thoroughly characterized. It is found that the general features of these effects, particular y the strong polarity and beam energy dependence, are consistent with a model which assumes that the main effect of the electric fields is to alter the populations of electrons `and holes at the phosphor surface. This in turn, modulates the non-radiative energy losses that strongly affect the low-beam-energy CL efficiency. Because the external fields are applied without any direct contact to the phosphor material, the large changes seen in the CL decay rapidly as the beam-created electrons and holes polarize, shielding the externally applied bias. These results have important implications for designing phosphors which might be efficient at low electron energies.

Authors:
Publication Date:
Research Org.:
Sandia National Laboratories, Albuquerque, NM, and Livermore, CA
Sponsoring Org.:
USDOE
OSTI Identifier:
3211
Report Number(s):
SAND99-0097J
ON: DE00003211
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Name: Journal of Applied Physics
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; Cathodoluminescence; Electric Fields; Phosphors

Citation Formats

Seager, C H. The Effect of Electric Fields on Cathodoluminescence from Phosphors. United States: N. p., 1999. Web. doi:10.1063/1.369623.
Seager, C H. The Effect of Electric Fields on Cathodoluminescence from Phosphors. United States. doi:10.1063/1.369623.
Seager, C H. Thu . "The Effect of Electric Fields on Cathodoluminescence from Phosphors". United States. doi:10.1063/1.369623. https://www.osti.gov/servlets/purl/3211.
@article{osti_3211,
title = {The Effect of Electric Fields on Cathodoluminescence from Phosphors},
author = {Seager, C H},
abstractNote = {When external electric fields are applied to phosphors the cathodoluminescence (CL) at low beam energies is strongly affected. This experiment has been carried out on a variety of common phosphors used in cathode ray tube applications, and the electron beam energy, beam current, and electric field dependence of the CL are thoroughly characterized. It is found that the general features of these effects, particular y the strong polarity and beam energy dependence, are consistent with a model which assumes that the main effect of the electric fields is to alter the populations of electrons `and holes at the phosphor surface. This in turn, modulates the non-radiative energy losses that strongly affect the low-beam-energy CL efficiency. Because the external fields are applied without any direct contact to the phosphor material, the large changes seen in the CL decay rapidly as the beam-created electrons and holes polarize, shielding the externally applied bias. These results have important implications for designing phosphors which might be efficient at low electron energies.},
doi = {10.1063/1.369623},
journal = {Journal of Applied Physics},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}