Light-induced absorption in lead lanthanum zirconate titanate ceramics

Autor:	Dominik Schaniel, Theo Woike, Silke Schaab, Torsten Granzow
Rok vydání:	2009
Předmět:	Stretched exponential function Materials science business.industry Band gap General Physics and Astronomy Infrared spectroscopy Molecular physics Piezoelectricity Titanate Zirconate visual_art visual_art.visual_art_medium Optoelectronics Ceramic business Absorption (electromagnetic radiation)
Zdroj:	Journal of Applied Physics. 105:024103
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.3065096
Popis:	Transient light-induced absorption in the near infrared (IR) and visible (vis) spectral range is observed in transparent lanthanum-modified lead zirconate titante piezoelectric ceramics by means of a pump-and-probe-type experiment after pulsed illumination with 532 nm. Its temporal behavior in the IR range is satisfactorily described by a single stretched exponential function, whereas in the vis range a sum of two stretched exponential functions is necessary. The results prove the existence of at least two defect levels in the energetic band gap.
Databáze:	OpenAIRE
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