In:
Dalton Transactions, Royal Society of Chemistry (RSC), Vol. 51, No. 7 ( 2022), p. 2770-2781
Kurzfassung:
White light-emitting diodes (WLEDs) fabricated with single-phase white phosphor are currently widely used in lighting and displays. Herein, we describe the development of a single-component white-emitting micro-sized powder Ca 9 ZnK(PO 4 ) 7 (CZKP):Ce 3+ ,Dy 3+ with high thermal stability. Theoretical and experimental investigations confirmed that the phosphate CZKP with a whitlockite-like structure was suitable as a phosphor host. The photoluminescence of cerium/dysprosium single- and co-doped samples was comprehensively studied. Dipole–dipole interaction resulted in the Ce 3+ → Dy 3+ energy transfer, which contributed to the spectral regulation for acquiring the white-emitting performance. Moreover, the superior thermal stability of the representative CZKP:0.10Ce 3+ ,0.15Dy 3+ phosphor was revealed. Finally, we explored the working performance of single-phase white phosphor-converted WLEDs. The corresponding work shows a successful design for achieving a single-component white phosphor via the Ce 3+ → Dy 3+ energy transfer approach.
Materialart:
Online-Ressource
ISSN:
1477-9226
,
1477-9234
Sprache:
Englisch
Verlag:
Royal Society of Chemistry (RSC)
Publikationsdatum:
2022
ZDB Id:
1472887-4