Mechanisms for the cathodoluminescence of cerium-doped yttrium aluminum garnet phosphors

SiAlON COATINGS OF SILICON NITRIDE AND SILICON CARBIDE

“…In general, vacancies have higher mobility than the associated solutes and defect complexes. 8,9 The study of transport properties as a function of temperature and oxygen partial pressure confirms a mixed ionic-electronic conductivity with a strong p-type (positive) component at high temperatures. It was found that the addition of calcium dopant creates negatively charged acceptors that with positively charged oxygen vacancies form low-mobility complexes.…”