Relaxation of electronic excitations in strontium titanate

Autor(en): Millers, D
Pankratov, V
Grigorjeva, L
Kapphan, S
Trepakov, V
Stichwörter: ABSORPTION; luminescence; Nuclear Science & Technology; Physics; Physics, Condensed Matter; Physics, Fluids & Plasmas; polarons; SRTIO3; transient absorption
Erscheinungsdatum: 2002
Herausgeber: TAYLOR & FRANCIS LTD
Journal: RADIATION EFFECTS AND DEFECTS IN SOLIDS
Volumen: 157
Ausgabe: 6-12
Startseite: 589
Seitenende: 593
Zusammenfassung: 
The transient absorption spectra and kinetics were studied for undoped, lead doped and high purity SrTiO3 single crystals. The pulsed electron beam induced transient absorption is studied in all crystals. The strong absorption at 0.8 eV was observed only in high purity SrTiO3 . This absorption is suggested to arise from intrinsic electron polaron. The bound electron polarons are likely responsible for absorption band at 1.4 eV. The main luminescence band under excitation pulse is observed at 2.75 eV. The luminescence decay is faster than that of transient absorption.
ISSN: 10420150
DOI: 10.1080/10420150215837

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