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ELECTROPHOTOLUMINESCENCE OF A ZINC CADMIUM SULFIDE PHOSPHOR IN DEPENDENCE ON EXCITATION WAVE LENGTHS AND FIELD PULSE WIDTH (in German)

Journal Article · · Z. Physik
DOI:https://doi.org/10.1007/BF01342472· OSTI ID:4016582
;
Luminescence flashes in an excited ZnCdS (Ag) phosphor occur when electric fields are put on or off. Whether these flashes are positive or negative depends on the length of the field pulse, on the exciting wavelength, and on the polarity of the irradiated electrode. There is a critical duration of the field pulses for which no field-off flash appears. At another but related critical time, the flashes with periodic field applications change sign. These times change with the exciting wavelength. The observations are interpreted as being controlled by the gradual filling of surface traps, which in its turn is influenced by the distribution of electron and hole concentrations produced by the incident radiation and the electric field. The critical time is approximately equal to the time needed for completely filling the surface traps. (auth)
Research Organization:
Fraunhofer-Gesellschaft, Frieburg i. B.; and Universitat, Frieburg i. B.
Sponsoring Organization:
USDOE
NSA Number:
NSA-15-017439
OSTI ID:
4016582
Journal Information:
Z. Physik, Journal Name: Z. Physik Vol. Vol: 162
Country of Publication:
Country unknown/Code not available
Language:
German

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Related Subjects

CADMIUM SULFIDES
CONVERSION
DISTRIBUTION
ELECTRIC FIELDS
ELECTRICITY
ELECTRODES
ELECTROLUMINESCENCE
ELECTRONS
EXCITATION
FREQUENCY
IRRADIATION
LUMINESCENCE
OSCILLATIONS
PHOSPHORS
PHYSICS
PRODUCTION
PULSES
QUANTITY RATIO
SURFACES
TRAPS
ZINC SULFIDES