Abstract
Fast sintering of Phosphor-in-Glass (PiG) by means of CO2 laser heating has been successfully achieved. PiGs samples fabricated at different exposure times were characterized and compared with a PiG sample synthetized through an electric furnace. An exposure time as short as 30 s and 12 W of optical power is necessary to sintering PiGs. Results show that the optimization of CO2 laser approach can dramatically reduce up to 60 times the PiGs sintering. Luminous Efficacy (LE) of at least 79.7 lm/W as well as minimum Color Rendering Index (CRI) value of 70 for all fabricated PiGs were obtained. Correlated Color Temperature (CCT) value decreased gradually as the CO2 laser exposure time increased. These results show that PiGs samples, synthetized with short exposure times, show excellent lighting properties.
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