Synthesis of   K   2   SiF   6 :  Mn   4+  Phosphor from   SiO   2  Powders via Redox Reaction in  HF /  KMnO   4  Solution and Their Application in Warm‐White  LED | Zendy

Liao Chenxing | Zendy; Cao Renping | Zendy; Ma Zhijun | Zendy; Li Yang | Zendy; Dong Guoping | Zendy; Sharafudeen Kaniyarakkal N. | Zendy; Qiu Jianrong | Zendy

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Synthesis of K 2 SiF 6 : Mn 4+ Phosphor from SiO 2 Powders via Redox Reaction in HF / KMnO 4 Solution and Their Application in Warm‐White LED

Author(s) -

Liao Chenxing,

Cao Renping,

Ma Zhijun,

Li Yang,

Dong Guoping,

Sharafudeen Kaniyarakkal N.,

Qiu Jianrong

Publication year - 2013

Publication title -

journal of the american ceramic society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.9

H-Index - 196

eISSN - 1551-2916

pISSN - 0002-7820

DOI - 10.1111/jace.12533

Subject(s) - phosphor , chemistry , analytical chemistry (journal) , doping , materials science , optoelectronics , chromatography

In this article, we propose a facile method for synthesis of K 2 SiF 6 : Mn 4+ phosphor and discuss its promising application in warm‐white light emitting diodes ( LED ). The K 2 SiF 6 :Mn 4+ was synthesized from SiO 2 powders through redox reaction in HF / KMnO 4 solution. The optical properties of LED s containing different ratios of K 2 SiF 6 : Mn 4+ phosphor and commercial Ce 3+ ‐doped garnets ( YAG ‐40) yellow–green phosphor were studied. A warm‐white LED , with color temperature of 3510 K and color rendering index of 90.9 and efficacy of 81.56 lm/W was demonstrated.

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