The luminescence properties of Ce 3+ activated Ba 2 Ca(BO 3 ) 2 with K + as a charge compensator have been investigated and compared with those with Na + -compensating. Energy transfer of Ce 3+ in Ba 2+ (i.e. Ce(1) 3+ ) and Ca 2+ (i.e. Ce(2) 3+ ) sites has been proven by VUV–UV excitation and emission spectra, luminescence decays and time-resolved emission spectra. In addition, by combining Ba 2 Ca(BO 3 ) 2 : Ce 3+ phosphors with near-ultraviolet (n-UV) InGaN chips, the fabricated light-emitting diodes (LEDs) show intense bluish-green emission, and the phosphors exhibit good thermal stability.
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Lin et al. (2009) studied this question.
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