Electronic and optical properties of a novel fluoroaluminate red phosphor Cs2NaAl3F12:Mn4+ with high color purity for white light-emitting diodes

Autor:	Zhengliang Wang, Guo Junming, Zibo Liang, Qiang Zhou, Mingmei Wu, Zhaofeng Yang, Pu Haiqi, Dongxin Shi, Xie Xiaoling
Rok vydání:	2019
Předmět:	Materials science 010405 organic chemistry business.industry Phosphor Color temperature 010402 general chemistry 01 natural sciences 0104 chemical sciences Inorganic Chemistry Crystal High color Color purity White light Optoelectronics Luminescence business Diode
Zdroj:	Dalton Transactions. 48:12459-12465
ISSN:	1477-9234 1477-9226
DOI:	10.1039/c9dt02577d
Popis:	In this work, a novel fluoroaluminate red phosphor of Cs2NaAl3F12:Mn4+ with excellent color purity was fabricated via the introduction of Mn4+ in the octahedral center. The crystal and electronic structures, luminescence properties and optical performances were characterized and investigated in detail. The evidences showed that Cs2NaAl3F12:Mn4+ well-crystallized into a single phase with particulate morphology, and the non-equivalent occupation in Cs2NaAl3F12 resulted in sharp red emissions with improved color purity upon blue light illumination. For solid-state lighting, the optical parameters consisted of the “blue-yellow-red” contributions significantly improved to a high color-rendering index of 88.7 and a low color temperature of 3856 K, indicating the potential use of Cs2NaAl3F12:Mn4+ for warm white light-emitting diode applications.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4259da6e8c1854deacb97cfc767b759f https://doi.org/10.1039/c9dt02577d Zobrazit plný text záznamu