Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 10, Issue 35, Pages 29233-29237Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b12170
Keywords
narrow-band-emitting; red fluoride phosphor; white-light-emitting diodes; surface coating; atomic layer deposition
Funding
- Ministry of Science and Technology of Taiwan [MOST 107-2113-M-002-008-MY3]
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Narrow-band Mn4+-doped fluoride phosphors have become a research hotspot worldwide. In this study, we propose integrated surface modification processes to enhance the performance and stability of the luminescence properties of K2TiF6:Mn4+ (KTF) phosphor. These integrated process are applied in the initial synthesis step, coating of the as-synthesized powder post-treatment process, and during the application of the phosphor in the white-light-emitting diode (WLED) device. Surface etching is conducted to remove impurities and small particles in KTF. Double-shell coating forms a stable protective layer outside the KTF. Atomic layer deposition is employed for the surface of the WLED device.
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