Thermal durability of YAG:Ce ceramic with containing Al2O3 and its Raman analysis

Reactive SPS of Al2O3–RE:YAG (RE = Ce; Ce+Gd) composite ceramic phosphors

“…To overcome thermal stability problems, many new types of phosphors, Ce:YAG phosphor-in-glass [23][24][25], Ce:YAG transparent ceramics and single crystals [26][27][28][29], Ce:YAG glass-ceramics [30,31], Ce:YAG-based composite ceramics and eutectic crystals have been investigated [11,[32][33][34][35][36][37][38]. Among them, Al2O3−Ce:YAG composite ceramics are considered the ideal color converter for durable, high-power bright WLEDs and LDs for several reasons [11,[39][40][41][42][43][44]. Firstly, YAG garnet ceramics are advanced polycrystalline matrices due to their high thermal conductivity (approximately 9-14 W•m -1 •K -1 ), thermal strength, and fracture toughness [17].…”

“…Diverse sintering synthetic approaches have been employed for elaborating Al2O3−Ce:YAG ceramics, including vacuum sintering (VS) [39,43,44,[53][54][55], hot pressing (HP) [41], pressureless glass crystallization [32], or spark plasma sintering (SPS) with specific Ce:YAG and Al2O3 raw powders [11,40,42]. The key attention was paid to finding the most effective and practical way to control light scattering in Ce:YAG ceramics (by tailoring residual porosity, alumina amount, or grain size of constituent phases), taking into account the thermal properties of the created composites.…”

“…The key attention was paid to finding the most effective and practical way to control light scattering in Ce:YAG ceramics (by tailoring residual porosity, alumina amount, or grain size of constituent phases), taking into account the thermal properties of the created composites. The development of the "unique" microstructure of these phosphor converters will provided а high LE, excellent heat dissipation performance, thermal stability, color uniformity and reliability under highpower LED/LD excitation [11,[39][40][41][42][43][44]53]. It was shown that coming from coarse-grained (VS approach) to fine-grained microstructure (HP/SPS approaches) allows one to improve the physicomechanical properties (thermal shock resistance, hardness, fracture viscosity, plasticity, etc.)…”

Glass‐ceramic Ce3+‐doped YAG‐Al2O3 composites prepared by sintering of glass microspheres

“…So far, several studies have been reported on Al 2 O 3 –YAG:Ce composite ceramics. The composites have been prepared from the mixture of oxide powders pressed into green bodies by sintering under vacuum at temperatures exceeding 1500℃ and often for pronged time (over 10h) 18–22 23–26 …”

Effective Yellow Y3Al5O12:Ce3+ Nanophosphor for Light‐Emitting Diode and Photovoltaic Cell as a Downconverter

“…Especially, the nanoparticle, when applied as an intermediate material, is known to be suitable for the dense polycrystalline ceramic. [ 11 ] As another challenging nanophosphor application, the YAG nanophosphor has been utilized as a color down‐shifting material in photovoltaic cell. [ 12,13 ] The photovoltaic cell has a low spectral response to high‐energy light in the region of ultraviolet‐to‐blue light.…”