Published January 2005 | Version v1
Journal article Metadata-only

X-ray and pulsed electron beam excited luminescence and optical absorption in KTaO3 crystals

Creators

  • 1. Institute of Solid State Physics, University of Latvia, Riga, LV-1063 (Latvia)
  • 2. Institute of Physics ASCR, Na Slovance 2, 18221 Prague 8 (Czech Republic)
  • 3. FB Physik, University of Osnabrueck (Germany)
  • 4. Solid State Division, Oak Ridge Nat.Lab., Oak Ridge, Tennessee, 37831 (United States)

Description

Pulsed electron beam excited time-resolved transient absorption and luminescence have been studied in nominally pure and Li-doped KTaO3 single crystals. It is found that under electron beam excitation in nominally pure KTaO3 the absorption bands peaks at ∝0.8 eV, ∝1.1 eV and 1.7 eV whereas in KTaO3:Li at ∝1.1 eV and ∝1.7 eV. The transient absorption decay varies over the spectrum thus revealing several short-lived centers. The main luminescence peak is centred at ∝2.7 eV in all KTaO3 specimens. Luminescence decay kinetics observed for the two bands slightly differ indicating different kinds of excited states are involved. (copyright 2005 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1002/pssc.200460145

Additional details

Identifiers

DOI
10.1002/pssc.200460145;

Publishing Information

Journal Title
Physica Status Solidi. C, Conferences
Journal Volume
2
Journal Issue
1
Journal Page Range
p. 200-203
ISSN
1610-1634

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
36024852
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
ABSORPTION SPECTRA; DE-EXCITATION; ELECTROLUMINESCENCE; EMISSION SPECTRA; EXCITED STATES; EXPERIMENTAL DATA; INFRARED SPECTRA; MONOCRYSTALS; OPACITY; PHOTOLUMINESCENCE; POTASSIUM COMPOUNDS; TANTALATES; TEMPERATURE RANGE 0273-0400 K; ULTRAVIOLET SPECTRA; VISIBLE SPECTRA
Descriptors DEC
ALKALI METAL COMPOUNDS; CRYSTALS; DATA; EMISSION; ENERGY LEVELS; ENERGY-LEVEL TRANSITIONS; INFORMATION; LUMINESCENCE; NUMERICAL DATA; OPTICAL PROPERTIES; OXYGEN COMPOUNDS; PHOTON EMISSION; PHYSICAL PROPERTIES; REFRACTORY METAL COMPOUNDS; SPECTRA; TANTALUM COMPOUNDS; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
With 3 figs., 10 refs.. SICI: 1610-1634(200501)2:1<200::AID-PSSC200460145>3.0.TX;2-Y