INVESTIGATION ON THE ORIGIN OF THE BLUE EMISSION IN TITANIUM-DOPED SAPPHIRE - IS F-CENTER THE BLUE EMISSION CENTER( COLOR)

Authors
CHEN W TANG HH SHI CS DENG J SHI JY ZHOU YX XIA SD WANG YX YIN ST
Citation
W. Chen et al., INVESTIGATION ON THE ORIGIN OF THE BLUE EMISSION IN TITANIUM-DOPED SAPPHIRE - IS F-CENTER THE BLUE EMISSION CENTER( COLOR), Applied physics letters, 67(3), 1995, pp. 317-319
Citations number
24
Categorie Soggetti
Physics, Applied
Journal title
Applied physics letters → ACNP
ISSN journal
00036951
Volume
67
Issue
3
Year of publication
1995
Pages
317 - 319
Database
ISI
SICI code
0003-6951(1995)67:3<317:IOTOOT>2.0.ZU;2-P
Abstract
Titanium doped sapphire (Ti:Al2O3) shows a 420 nm blue emission band w hose corresponding excitation band lies at 244 nm. With the aim of asc ertaining the origin of this blue emission, using synchrotron radiatio n we measured the vacuum ultraviolet to ultraviolet absorption spectru m of titanium doped sapphire. It is suggested that the blue emission i s due to a center other than a trivalent Ti3+ ion or a tetravalent Ti4 + ion, most probably an F+-type color center formed in the crystal. (C ) 1995 American Institute of Physics.