Ce-doped YAG phosphor powder synthesized via microwave combustion and its application for white LED

Husnen R. Abd; Zainuriah Hassan; Naser M. Ahmed; Forat H. Alsultany; Ahmad Fairuz Omar

doi:10.1117/1.OE.58.2.027110

14 February 2019 Ce-doped YAG phosphor powder synthesized via microwave combustion and its application for white LED

Husnen R. Abd, Zainuriah Hassan, Naser M. Ahmed, Forat H. Alsultany, Ahmad Fairuz Omar

Author Affiliations +

Optical Engineering, Vol. 58, Issue 2, 027110 (February 2019). https://doi.org/10.1117/1.OE.58.2.027110

Abstract

Cerium-doped yttrium aluminum garnet (YAG : Ce^3 +) powder phosphor have been extensively studied as phosphors for blue to white light conversion. Y_{(3 − x)}Al₅O₁₂ : x Ce^3 + (x = 2.0 at. %) were successfully synthesized by microwave-assisted combustion (MW) using the organic fuel urea. A direct conversion from the amorphous phase to the cubic one was obtained at 1050°C for 5 h, together with an increase in the particle size into the range of 50 to 60 nm and decrease in the specific surface area. The as-prepared precursors and powder sintered at 1050°C were characterized for their structure, particle size, morphology, electroluminescence properties, and chromaticity by x-ray diffraction, Brunauer–Emmett–Teller method, Fourier transform infrared spectroscopy, field emission-scanning electron microscopy, transmission electron microscopy, electroluminescence, and standard CIE 1931 chromaticity analysis (CIE) chromaticity diagram, respectively. The results show that the obtained sintered YAG : Ce^3 + phosphor powder has spherical-shaped particles and strong yellow emission compared to as-prepared phosphor powder. White light emitting diodes with proper color rendering index, and tunable correlated color temperature properties can be produced by controlling the injection currents and coating thickness of the sample, offering daylight white and neutral white LEDs.

Citation Download Citation

Husnen R. Abd, Zainuriah Hassan, Naser M. Ahmed, Forat H. Alsultany, and Ahmad Fairuz Omar "Ce-doped YAG phosphor powder synthesized via microwave combustion and its application for white LED," Optical Engineering 58(2), 027110 (14 February 2019). https://doi.org/10.1117/1.OE.58.2.027110

Received: 4 October 2018; Accepted: 24 January 2019; Published: 14 February 2019

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $24.00

Non-members: $28.00 ADD TO CART

JOURNAL ARTICLE
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

YAG lasers

Cerium

Particles

Light emitting diodes

Combustion

Crystals

Electroluminescence

Show All Keywords

Keywords/Phrases

Search In:

Publication Years