ZnGa(2)O(4):Cr3+: a new red long-lasting phosphor with high brightness

dc.contributor.author	Bessiere, A.
dc.contributor.author	Jacquart, S.
dc.contributor.author	Priolkar, K.R.
dc.contributor.author	Lecointre, A.
dc.contributor.author	Viana, B.
dc.contributor.author	Gourier, D.
dc.date.accessioned	2015-06-04T03:13:51Z
dc.date.available	2015-06-04T03:13:51Z
dc.date.issued	2011
dc.identifier.citation	Optics Express. 19(11); 2011; 10131-10137.	en_US
dc.identifier.uri	http://dx.doi.org/10.1364/OE.19.010131
dc.identifier.uri	http://irgu.unigoa.ac.in/drs/handle/unigoa/2652
dc.description.abstract	ZnGa(2)O(4):Cr3+ is shown to be a new bright red UV excited long-lasting phosphor potentially suitable for in vivo imaging due to its 650 nm-750 nm emission range. Photoluminescence and X-ray excited radioluminescence show the (2)E to (4)A(2) emission lines of both ideal Cr3+ and Cr3+ distorted by a neighboring antisite defect while long-lasting phosphorescence (LLP) and thermally stimulated luminescence (TSL) almost exclusively occur via distorted Cr3+. The most intense LLP is obtained with a nominal Zn deficiency and is related to a TSL peak at 335K. A mechanism for LLP and TSL is proposed, whereby the antisite defect responsible for the distortion at Cr3+ acts as a deep trap.	en_US
dc.publisher	Optical Society of America	en_US
dc.subject	Physics	en_US
dc.title	ZnGa(2)O(4):Cr3+: a new red long-lasting phosphor with high brightness	en_US
dc.type	Journal article	en_US
dc.identifier.impf	y