Chawla, Santa and Kumar, Nitin and Chander, Harish (2008) Broad yellow orange emission from SrAl2O4:Pr3+ phosphor with blue excitation for application to white LEDs. Journal of Luminescence , 129 (2). pp. 114-118. ISSN 0022-2313

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Abstract

Photoluminescence excitation to intermediate atomic levels of rare earth activator ion (praseodymium) situated intragap in alkaline earth aluminate (AEA) SrAl2O4 has been tailored. This lead to blue excitation (2.7 eV) of large band gap AEA possible. Photoluminescence (PL) emission in the visible region extends from 525 to 650 nm corresponding to transition from 3P0 and 1D2 excited states to different 3HJ and 3FJ states of Pr3+, broadened by crystal field effect of SrAl2O4. Thus SrAl2O4:Pr3+ promise to be a good candidate for solid state lighting in conjunction with blue LED.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Elsevier B.V.
Uncontrolled Keywords:	Photoluminescence; Alkaline earth aluminate; Rare earth activator; Blue LED
Subjects:	Optics
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	14 Aug 2012 08:00
Last Modified:	14 Aug 2012 08:00
URI:	http://npl.csircentral.net/id/eprint/410

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