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Title
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Optical study of relaxation dynamics of photo-induced absorption of Cr-doped Bi₁₂SiO₂₀ crystals
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Author
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Abstract
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| The charge carriers tunneling produced in the forbidden band of the Cr doped Bi12SiO20 has been studied using photo-induced absorption (PIA) spectroscopy. These are excited by a green nanosecond neodymium-doped Yttrium Aluminum Garnet; Nd: Y3Al5O12 (ND: YAG) laser at a wavelength of 532 nm. The relaxation dynamics of these charge carriers in this crystal are characterized by a stretched exponential decay with a highly correlated constant of a streched life time ? and a stretched coeffcient ?. The charge transport processes of these charge carriers in the forbidden band in this crystal shows nearly temperature independent behavior from the Arrhenius plot. This corresponds to a very weak dependence of the PIA of the charge carriers? dynamics within the forbidden band. The electo-optical descriptions are explained in the framework of the fast and slow time decays of the charge carriers tunneling within the localized states. |
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Language
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English
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Source (journal)
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Physica: B : condensed matter. - Amsterdam, 1998, currens
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Publication
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Amsterdam
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North-Holland
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2021
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ISSN
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0921-4526
[print]
1873-2135
[online]
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DOI
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10.1016/J.PHYSB.2020.412778
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Volume/pages
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608
(2021)
, 6 p.
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Article Reference
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412778
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ISI
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000643927500007
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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