Ultrafast fabrication of solid phosphor based white light emitting diodes: From powder synthesis to devices

摘要

We here present our state of art spark plasma sintering technology in ultrafast fabricating transparent Ce:YAG@MgAl_2O_4 composite ceramics based white light emitting diodes directly from powder synthesis to final devices. The total heat processing time is less than 3 h. The optical properties of the sintered transparent composite can be easily adjusted by internal and external modifications to satisfy specific requirement. This method is also fit for fabricating multi-phosphor composites for improved color rendering index.