Electric field control of cathodoluminescence from phosphors excited at low electron energies

Journal Article · Wed Jul 01 04:00:00 EDT 1998 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.121732· OSTI ID:638737

Seager, C H ^[1]

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1. Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)

It is demonstrated that electric fields applied across phosphor layers strongly influence the cathodoluminescence emitted from these materials at low electron beam energies. The magnitude of these effects suggest that the primary mechanism may be alteration of the relative capture rates of electrons and holes at surface or near-surface defect sites associated with nonradiative energy losses. The sign of these effects in the two materials investigated suggests that the rate limiting step at low electric fields is the capture of electrons. Strong evidence for field-induced polarization and trapping of the beam-created electron-hole pair population is also presented. {copyright} {ital 1998 American Institute of Physics.}

• OSTI ID: 638737
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 1 Vol. 73; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CATHODOLUMINESCENCE
CRYSTAL DEFECTS
ELECTRIC FIELDS
ELECTRON BEAMS
ERBIUM ADDITIONS
PHOSPHORS
RECOMBINATION
TERBIUM ADDITIONS
YTTRIUM OXIDES