|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Phase Stability, Phase Transformations, and Reactive Phase Formation in Electronic Materials XV
||An Experimental and Computational Approach to Properties of Mg2TiO4: Mn+4 Red Emitting Phosphor
||Chieh-Szu Huang, Yi-Da Ho, Cheng-Liang Huang, Shih-kang Lin
|On-Site Speaker (Planned)
Red light phosphor is the key component in the well-established blue light emitting diode chips for stimulating natural sunlight. However, environmentally hazardous rare-earth (RE) dopants, e.g. Eu+2 and Ce+2, are commonly used for red phosphors. In this paper, the alternative “RE-free” red light luminance material Mg2TiO4 inverse spinel with the luminescent center of Mn+4, i.e., Mg2TiO4:Mn+4, is investigated using both experimental and theoretical approaches. Pristine and Mn-doped Mg2TiO4 thin films were deposited on Si (100) substrates using either sol-gel or radio frequency sputtering, annealed at various temperatures and atmospheres, and characterized using photoluminescence spectroscopy. In addition, the atomistic model of the Mg2TiO4:Mn+4 inverse spinel was constructed, and the stability and electronic band structures of the pristine and Mn-doped Mg2TiO4 were calculated using first principles calculations based on density functional theory. Essential physical and optoelectronic properties of the Mg2TiO4:Mn+4 luminance material as well as its optimal processing conditions were comprehensively reported.
||Planned: A print-only volume