Preparation and luminescence characteristics of Eu~(2+) activated silicate phosphor

• 作 者: 李盼来 杨志平 王志军 郭庆林
• 机 构: College of Physics Science & Technology,Hebei University,
• 出 处: Chinese Physics B
• 发表日期: 2008年03期
• 关键词: phosphor bands luminescence silicate excitation yellow agree crystalline naked l

This paper synthesizes the Sr 2 SiO 4:Eu 2+ phosphor by high temperature solid-state reaction.The emission spectrum of Sr 2 SiO 4:Eu 2+ shows two bands centred at 480 and 547 nm,which agree well with the calculation values of emission spectrum,and the location of yellow emission of Sr 2 SiO 4:Eu 2+ is influenced by the Eu 2+ concentration.The excitation spectrum for 547 nm emission has two bands at 363 and 402 nm.The emission spectrum of white light emitting diodes (w-LEDs) based on Sr 2 SiO 4:Eu 2+ phosphor + InGaN LED was investigated.

This paper synthesizes the Sr 2 SiO 4: Eu 2+ phosphor by high temperature solid-state reaction. The emission spectrum of Sr 2 SiO 4: Eu 2+ shows two bands at 480 and 547 nm, which agree well with the calculated values of emission spectrum, and the location of yellow emission of Sr 2 SiO 4: Eu 2+ is influenced by the Eu 2+ concentration. The excitation spectrum for 547 nm emission has two bands at 363 and 402 nm. The emission spectrum of white light emitting diodes (w-LEDs) based on Sr 2 SiO 4: Eu 2+ phosphor + InGaN LED was investigated.