Author:
Chen Yan,Wang Meng,Wang Jing,Wu Mingmei,Wang Chengxin
Abstract
Abstract
An intense red phosphor, CaYAlO4:Mn4+, was developed by solid state reaction. The photoluminescence excitation and emission spectra, concentration effect, thermal-dependent luminescence quenching properties and decay curves are investigated. The results show Mn4+ ion exhibits a broadband excitation extending from 250 to 550 nm and emits an intense red light at 710 nm with high color purity and stable chromaticity coordinates. These results demonstrate that Mn4+ ion can play a role of activator in narrow red emitting phosphor potentially useful in UV (~370 nm) GaN-base or Blue (~460 nm) InGaN-base LED.
Publisher
Springer Science and Business Media LLC
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