Accession Number : AD0714620

Title :   Defects and Their Role in Determining Bulk Properties of Crystals.

Descriptive Note : Final rept.,

Corporate Author : TEXAS INSTRUMENTS INC DALLAS

Personal Author(s) : Holton,William C.

Report Date : SEP 1970

Pagination or Media Count : 31

Abstract : The luminescence and electrical properties of doped II-VI compounds have been related to the presence of specific impurity centers by identifying the center through its characteristic paramagnetic resonance and correlating resonance intensity with optical/electrical properties. Because the Jahn-Teller effect is found to occur for many of these impurity defects, it has been studied in simplified situations, Sc(2+) (3d1) in CdF2 and 0(-) (2p5) in KI. Self-activiated, copper, rare-earth, transition metal, and Group V centers are among the impurities studied. P-type ZnSe was produced by P and As doping. Shapr line rare earth fluorescence is excited via energy transfer in a (rare earth)(3+) -4Cu(+) complex. (Author)

Descriptors :   (*LUMINESCENCE, SOLID STATE PHYSICS), (*CRYSTAL DEFECTS, PARAMAGNETIC RESONANCE), SEMICONDUCTORS, ZEEMAN EFFECT, SINGLE CRYSTALS, RARE EARTH ELEMENTS, TRANSITION METALS, ZINC SULFIDES, POTASSIUM COMPOUNDS, CADMIUM COMPOUNDS, ZINC COMPOUNDS, FLUORIDES, IODIDES, IMPURITIES, SELENIDES, TELLURIDES

Subject Categories : Crystallography
      Optics
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE