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Article Abstract
There are several key requirements that a very good LED phosphor should meet, i.e., strong absorption, high quantum efficiency, high colour purity, and high luminescence quenching temperature. The reported RbBi(PO)(MoO):Eu phosphors have all these properties. The RbBi(PO)(MoO):Eu phosphors emit bright red light if excited with near-UV radiation. The calculated colour coordinates show good stability in the 77-500 K temperature range. Moreover, sample doped with 50% Eu possesses quantum efficiency close to unity. Besides the powder samples, ceramic disks of RbEu(PO)(MoO) specimen were also prepared, and the red light sources from these disks in combination with near-UV emitting LED were fabricated. The obtained results indicated that ceramic disks efficiently absorb the emission of 375 and 400 nm LED and could be applied as a red component in phosphor-converted white LEDs.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6804156 | PMC |
| http://dx.doi.org/10.3390/ma12193275 | DOI Listing |
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