Accession Number : AD0270128

Title :   INVESTIGATION OF CARRIER INJECTION ELECTROLUMINESCENCE

Corporate Author : DAVID SARNOFF RESEARCH CENTER PRINCETON N J

Report Date : 15 NOV 1961

Pagination or Media Count : 1

Abstract : The use of a new, fast-responding control system in combination with a new setup for the vertical Bridgman method with RF heating under high pressure, effected a marked improvement in the quality of ZnSe crystals. The microscopic observations in single electroluminescent particles were continued. Preparation and properties of the new embedding media with matched indices of refraction are described in detail. Interpretation of the findings permits the elimination of a number of current hypotheses on the mechanism of electroluminescence. The results are in qualitative agreement with a model based on transient alternatspace-charge-limited injection of holes and electrons from imperfection lines which are decorated with precipated conducting CuS, into insulating, compensated ZnS. The injected holes are stored in deep activator centers for half a cycle and recombine with electrons in the next half cycle. (Author)

Descriptors :   *LUMINESCENCE, *PHOSPHORESCENT MATERIALS, *SELENIDES, *SINGLE CRYSTALS, *SULFIDES, *ZINC COMPOUNDS, ARSENIC, GLASS, GROWTH(PHYSIOLOGY), HALOGENS, HIGH PRESSURE, LABORATORY EQUIPMENT, MICROSCOPY, PARTICLES, PHOTOELECTRIC EFFECT, POWDERS, RADIOFREQUENCY POWER, REFRACTIVE INDEX, SELENIUM, SOLID STATE PHYSICS, SULFUR, TEST METHODS, THALLIUM

Distribution Statement : APPROVED FOR PUBLIC RELEASE