We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Green route synthesis of K<sub>2</sub>SiF<sub>6</sub>:Mn<sup>4+</sup> red phosphor through a brief one-step co-precipitation method for warm white light LEDs.
- Authors
Hou, Jingshan; Chen, Jingzhu; Hu, Meiqing; Fang, Yongzheng; Zhang, Ganghua; Liu, Yufeng; Zhao, Guoying; Lin, Chun Che; Makarov, Sergey V.; Liu, Zhifu
- Abstract
Using a green and convenient method to prepare fluoride red phosphor is an important challenge for industrialization applications. In this work, K2SiF6:Mn4+ red phosphor was successfully prepared through a brief one-step co-precipitation method without HF. A simplified and non-toxic ion exchange strategy for the formation of narrow-band red-emitting K2SiF6:Mn4+ phosphors was developed using different solvent (HAc, H3PO4, HNO3, HCl, H2O). The photoluminescence intensity of the prepared K2SiF6:Mn4+ red phosphor was the highest when the pH of the reaction solution was 1.0. Furthermore, using K2SiF6:Mn4+ as red component, the warm white light LED (light-emitting diode) with low correlated color temperature (CCT = 4095 K), high color rendering index (CRI, Ra = 87) was achieved, which proved that the phosphor synthesized by this method had great application potential. The preparation method provided in this article is safer and more environmentally friendly, and has important commercial and social value.
- Subjects
PHOSPHORS; COPRECIPITATION (Chemistry); LIGHT emitting diodes; ION exchange (Chemistry); COLOR temperature; EXCITATION spectrum; LUMINESCENCE spectroscopy; TERBIUM
- Publication
Journal of Materials Science: Materials in Electronics, 2022, Vol 33, Issue 4, p2204
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-021-07428-7