Thermal-resistance of Phosphor in Glass (PiGs) by blue LD excitation for bio imaging application

Since light emitting diodes (LEDs) have been widely investigated, high power LEDs and laser diodes (LD) based light source become a next generation light source in illumination and display applications. A general approach to generate white emission is combination of blue emission and yellow phosphor (YAG:Ce3+). The yellow phosphor is used for the white LEDs as a shape of film or encapsulation consisting of epoxy and phosphor. However, epoxy is not compatible material for the blue LD application due to a poor thermal stability and blackened with blue LD irradiation In order to improve these challenges, the Phosphor in Glass (PiGs) has been recently reported . In this study, we rapidly fabricated PiGs using microwave synthesis with common domestic microwave oven. The PiGs consist of a common soda-lime glasses and commercial YAG:Ce3+ phosphors. In order to characterize the effect of (1) microwave radiation energy and (2) weight ratio between glass and yellow phosphor, microscopic observation, luminescent properties and thermal measurement are investigated.