Luminescence studies on Ba2ZnSi2O7 : Eu2+ phosphors crystals

✍ Scribed by Shan-shan Yao; Yuan-yuan Li; Li-hong Xue; You-wei Yan; Yan You

• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 462 KB
• Volume: 25
• Category: Article
• ISSN: 1522-7235
• DOI: 10.1002/bio.1168

✦ Synopsis

Abstract

A novel blue green‐emitting phosphor Ba~2~ZnSi~2~O~7~ : Eu^2+^ was prepared by combustion synthesis method and an efficient bluish green emission under from ultraviolet to visible light was observed. The emission spectrum shows a single intensive band centered at 503 nm, which corresponds to the 4__f__^6^5__d__^1^ → 4__f__^7^ transition of Eu^2+^. The excitation spectrum is a broad band extending from 260 to 465 nm, which matches the emission of ultraviolet light‐emitting diodes (UV‐LEDs). The effect of doped Eu^2+^ concentration on the emission intensity of Ba~2~ZnSi~2~O~7~ : Eu^2+^ was also investigated. The result indicates that Ba~2~ZnSi~2~O~7~ : Eu^2+^ can be potentially useful as a UV radiation‐converting phosphor for white light‐emitting diodes. Copyright © 2009 John Wiley & Sons, Ltd.