Category: Transient Plane Source
Author(s): Byung Woo Jeong, Dae-Ho Yoon, Dong Bok Lee, Eun-Kyung Ji, Mong Kwon Jung, Sang Hwan Bak, Young-Hyun Song
Keywords: ceramics, FE-SEM, Field Emission Scanning Electron Microscopy, Field Emission Scanning Electron Microscopy (FE-SEM), Photoluminescence Spectrometry, Photoluminescence Spectrometry (PL), PL, Thermal Conductivity, TPS Technique, Transient Plane Heat Source, Transient Plane Heat Source (TPS) Technique, White LEDs, X-ray Diffraction, X-ray diffraction (XRD), XRD
Abstract: Lutetium aluminum garnet activated by cerium (LuAG:Ce) materials containing functional materials (SiO2 and MgO) were prepared. These materials are used in LEDs, and they require a high thermal conductivity in order to minimize thermal aging. The functional materials were added in order to increase the thermal conductivity, as well as the luminescent properties of these materials. It was found that SiO2 did not improve the luminescent properties, but MgO did enhance these properties. The materials containing MgO were found to maintain their properties better than the others. The authors state that MgO could be a useful additive in next-generation high-power LEDs.
Reference: Journal of Materials Chemistry C, 3 (2015) 12390-12393