DOPANT-SENSITIVE LUMINESCENCE SPECTROSCOPY OF YTTRIUM-ALUMINUM-GARNETBY HIGH-CURRENT ELECTRON PULSES

Citation
Vi. Solomonov et al., DOPANT-SENSITIVE LUMINESCENCE SPECTROSCOPY OF YTTRIUM-ALUMINUM-GARNETBY HIGH-CURRENT ELECTRON PULSES, Journal of applied physics, 83(4), 1998, pp. 2250-2255
Citations number
20
Categorie Soggetti
Physics, Applied
Journal title
ISSN journal
00218979
Volume
83
Issue
4
Year of publication
1998
Pages
2250 - 2255
Database
ISI
SICI code
0021-8979(1998)83:4<2250:DLSOY>2.0.ZU;2-R
Abstract
Pulsed cathode luminescence (PCL) spectroscopy is developed to detect dopant-d elements: Cr, Mn, Co, Fe, V, and Ni in aluminum garnet crysta ls. PCL is excited by 2 ns electron pulses with high current density 7 00 +/- 100 A/cm(2) and the energy of electrons 180 +/- 20 keV. In cont rast to conventional spectroscopies, which require low temperatures to suppress thermal quenching and produce measurable intensity of lumine scence, our method works at room temperatures. The high-current PCL sp ectroscopy allows us to discriminate the new lines and bands of d elem ents which are inactive in photo- and x-ray luminescence. A large port ion of the PCL spectrum can be taken simultaneously due to the high in tensity of luminescence. (C) 1998 American Institute of Physics.