Full | cyan wavelength
Thedevelopmentofphosphormaterialswithoutstandingphotoluminescencepropertiesiscriticalfornext-generationhigh-qualitysolid-statewhitelighting.Asthereisablue-greencavityexistingintheemissionspectraofthetraditionalphosphor-convertedwhite-light-emittingdiodes(w-LEDs),thecyan-emittingphosphorservesasanimportantfunctionincompensatingthespectralgaptorealize“full-visible-spectrumlighting”.Herein,wereportedthediscoveryofanefficientcyan-emittingCe3+-dopedCa2YHf2Al3O12(CYHAO)garnetphosphorwithgoodtherma...
The development of phosphor materials with outstanding photoluminescence properties is critical for next-generation high-quality solid-state white lighting. As there is a blue-green cavity existing in the emission spectra of the traditional phosphor-converted white-light-emitting diodes (w-LEDs), the cyan-emitting phosphor serves as an important function in compensating the spectral gap to realize “full-visible-spectrum lighting”. Herein, we reported the discovery of an efficient cyan-emitting Ce3+-doped Ca2YHf2Al3O12 (CYHAO) garnet phosphor with good thermal stability. The as-prepared CYHAO:xCe3+ phosphor exhibited a broad excitation band in the range of 360 to 460 nm with a maximum at 408 nm, making this phosphor compatible with an efficient 400 nm near-ultraviolet (NUV)-emitting LED chip. Under 408 nm excitation, the optimal sample of CYHAO:0.03Ce3+ exhibited bright broadband cyan emission (λem = 493 nm; ba...