Synthesis, deep red emission and warm WLED applications of K2SiF6:Mn4+ phosphors

8Citations
Citations of this article
6Readers
Mendeley users who have this article in their library.

Abstract

K2SiF6:Mn4+ phosphors were synthesized by using different materials and methods The influence of synthesis parameters on the luminescent properties was investigated. The phase and composition of three K2SiF6:Mn4+ phosphors were determined by X-ray diffraction, Energy dispersive spectrometer and Fourier transform infrared spectroscopy. The microstructure and morphology of three K2SiF6:Mn4+ phosphors were observed by a field emission scanning electron microscope. The excitation spectrum of K2SiF6:Mn4+ phosphor consists of excitation bands in ultraviolet and blue regions originating from 4A2g → 4T1g and 4A2g → 4T2g transitions of Mn4+. The emission spectrum of K2SiF6:Mn4+ phosphor shows emission bands in red region resulting from the 2Eg → 4A2g transitions of Mn4+ ions. The addition of H2O2 in the synthesis favors the doping of Mn4+ in K2SiF6 host and thus increases the emission intensity of K2SiF6:Mn4+ phosphor. The luminescent properties of K2SiF6:Mn4+ phosphor suggests that it is a suitable candidate for warm white light emitting diodes. By combining blue chip, YAG:Ce yellow and K2SiF6:Mn4+ phosphors, white light emitting diodes were fabricated. They exhibit ‘warm’ white light that suitable use as indoor light.

Author supplied keywords

Cite

CITATION STYLE

APA

Sun, X. Y., He, Z., & Gu, X. (2018). Synthesis, deep red emission and warm WLED applications of K2SiF6:Mn4+ phosphors. Journal of Photochemistry and Photobiology A: Chemistry, 350, 69–74. https://doi.org/10.1016/j.jphotochem.2017.09.051

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free