Photoluminescence characteristics of new stannate pyrochlore based red phosphors: CaLaSnNbO7: Eu3+

dc.contributor.author	Mahesh, S K
dc.contributor.author	Prabhakar Rao, P
dc.contributor.author	Mariyam Thomas
dc.contributor.author	Radhakrishnan, A N
dc.contributor.author	Peter Koshy
dc.date.accessioned	2013-06-12T08:54:09Z
dc.date.available	2013-06-12T08:54:09Z
dc.date.issued	2012-09
dc.identifier.citation	Journal of Materials Science: Materials in Electronics 23(9):1605-1609	en_US
dc.identifier.uri	http://hdl.handle.net/123456789/427
dc.description.abstract	New stannate pyrochlore based red emitting phosphor materials: CaLa1-xSnNbO7: xEu3? were prepared by the conventional solid state route and characterized by Powder X-ray diffractometer, scanning electron microscope and fluorescence measurements. Optimization studies by way of varying the calcination temperatures show that CaLaSnNbO7: Eu3? prepared at 1,400 C displayed the maximum luminescence characteristics. The dominant emission peak of CaLaSnNbO7: xEu3? phosphor is 5D0 ? 7F2 forced hypersensitive electric dipole transition which indicates the deviation of pyrochlore A-site from inversion symmetry. The present quaternary pyrochlore phosphors show strong red luminescence (*612 nm)under near UV (394 nm) and blue light (465 nm)excitations	en_US
dc.language.iso	en	en_US
dc.publisher	Springer	en_US
dc.subject	Photoluminescence	en_US
dc.subject	Stannate pyrochlore	en_US
dc.subject	Red phosphors	en_US
dc.title	Photoluminescence characteristics of new stannate pyrochlore based red phosphors: CaLaSnNbO7: Eu3+	en_US
dc.type	Article	en_US
niist.citation