High-brightness yellow-orange yellow phosphor for warm white LED

摘要

A high-brightness yellow-orange yellow phosphor for use in warm white LED (light emitting diode), the high-brightness yellow-orange yellow phosphor comprises a substrate based on a rare-earth garnet and cerium for activating said substrate. The high-brightness yellow-orange yellow phosphor has the substances of Li⁺¹, Mg⁺² and N⁻³ contained therein so that the overall stoichiometric equation of the substrate is: Σ(Ln)₃Al_5−xLi_(x+y)Mg_(x+y)O_12−3yN_3y and, the high-brightness yellow-orange yellow phosphor radiates in a visible orange yellow band at λ=538˜569 nm when activated by a shortwave light from an InGaN semiconductor heterostructure.