Synthesis and Photoluminescent Properties of (La,Ca)3Si6N11:Ce3+ Fine Powder Phosphors for Solid-State Lighting

We have developed a new Ce3+-activated nitride phosphor, (La,Ca)3Si6N11:Ce3+, using the gas-reduction−nitridation method. The synthesized (La,Ca)3Si6N11:Ce3+ possesses tunable yellow broadband emission with the dominant wavelength of 577−581 nm and the external quantum efficiency up to ∼42%, under a...

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Bibliographic Details
Published in:ACS applied materials & interfaces 2011-03, Vol.3 (3), p.811-816
Main Authors: Suehiro, Takayuki, Hirosaki, Naoto, Xie, Rong-Jun
Format: Article
Language:English
Subjects:
Cesium - chemistry
Equipment Design
Equipment Failure Analysis
Lighting - instrumentation
Luminescent Measurements - instrumentation
Powders
Semiconductors
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Summary:We have developed a new Ce3+-activated nitride phosphor, (La,Ca)3Si6N11:Ce3+, using the gas-reduction−nitridation method. The synthesized (La,Ca)3Si6N11:Ce3+ possesses tunable yellow broadband emission with the dominant wavelength of 577−581 nm and the external quantum efficiency up to ∼42%, under an excitation of 450 nm. Precise steady-state and time-resolved photoluminescence analyses revealed that the only one type of Ce3+ center is active under the blue-light excitation. By combining the synthesized (La,Ca)3Si6N11:Ce3+ phosphors with the 450-nm InGaN chip, a broad range of white light with the correlated color temperatures of ∼2600−3800 K can be created, demonstrating their promising applicability to the warm-white light-emitting diodes.
ISSN:1944-8244
1944-8252
DOI:10.1021/am101160e