LUMINESCENCE EXCITATION OF Y3AL5O12 MONOCRYSTALS IN THE VACUUM-ULTRAVIOLET REGION

Authors
HARUTUNYAN VV GEVORKYAN VA HAKHVERDYAN EA BABAYAN AK MAKHOV VN
Citation
Vv. Harutunyan et al., LUMINESCENCE EXCITATION OF Y3AL5O12 MONOCRYSTALS IN THE VACUUM-ULTRAVIOLET REGION, Physica status solidi. a, Applied research, 167(1), 1998, pp. 237-241
Citations number
18
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica status solidi. a, Applied research → ACNP
ISSN journal
00318965
Volume
167
Issue
1
Year of publication
1998
Pages
237 - 241
Database
ISI
SICI code
0031-8965(1998)167:1<237:LEOYMI>2.0.ZU;2-E
Abstract
Luminescence excitation spectra of Y3Al5O12 Single crystals in the reg ion from 4 to 30 eV at temperatures of 300 and 90 K were investigated using synchrotron radiation. In the region of fundamental absorption, excitation bands corresponding to excitonic (S-ex) and recombination ( S-h + e) states as well as an UV band stipulated by doped Nd3+ ions we re revealed. In the high energy region (hv > 25 eV), peculiarities of the multiplication of electronic excitations in both pure crystals and those doped by different concentrations of Nd3+ are discussed.