Gene/Protein
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Symptom
Drug
Enzyme
Compound
Pivot Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Target Concepts:
Gene/Protein
Disease
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Drug
Enzyme
Compound
Query: EC:6.3.5.5 (
CPS
)
1,262
document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)
To develop new efficient phosphors for LEDs based on multifunctional applications, a series of Ce
3+
/Mn
2+
activated Ca
7
(PO
4
)
2
(SiO
4
)
2
(
CPS
) samples were prepared by solid-state reaction method. Upon 365 nm excitation, a broad emission band around 439 nm in the Ce
3+
-single-doped
CPS
was observed. The optimal Ce
3+
concentration was determined to be 3%, for which the quantum efficiency was obtained to be 90.4%, higher than that of the commercial
BAM
phosphor. By monitoring 458 nm, an intense and broad excitation band was found from 240 to 400 nm, which can match well with the near-ultraviolet (NUV) LED chip. For Ce
3+
-Mn
2+
codoped
CPS
, a new red emission band belonging to Mn
2+
appeared and an energy transfer from Ce
3+
to Mn
2+
was confirmed. It was also found that the emission spectra of Ce
3+
/Mn
2+
could well cover the optical absorption bands of plants. The fabrication of the phosphors on NUV LED chip indicates that the present phosphors could be promising in solid lighting and plants growth.
...
PMID:Ce
3+
/Mn
2+
-activated Ca
7
(PO
4
)
2
(SiO
4
)
2
: efficient luminescent materials for multifunctional applications. 3018 62
