Digitale Medien
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
87 (2000), S. 7594-7596
ISSN:
1089-7550
Quelle:
AIP Digital Archive
Thema:
Physik
Notizen:
Photoluminescence was observed from pure perovskite lanthanum aluminate (LaAlO3) single crystals grown with a floating-zone method in reduced atmosphere. Emission was composed of a fast ultraviolet (UV) component and a broad visible emission with a lifetime of 13 μs. From the lifetime measurement, absorption spectra, excitation spectrum, and comparison between samples as-grown and annealed in oxygen, we assigned the UV emission to band-to-band emission or emission from polaron pairs. The visible component was assigned to emission from the excited state formed at oxygen defect sites. These emissions demonstrate the possibility of light-emitting devices made of perovskite oxides. © 2000 American Institute of Physics.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.373428
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