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Giant persistent photoconductivity in BaTiO3/TiO2 heterostructures (CROSBI ID 209434)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Plodinec, Milivoj ; Šantić, Ana ; Zavašnik, Janez ; Čeh, Miran ; Gajović, Andreja Giant persistent photoconductivity in BaTiO3/TiO2 heterostructures // Applied physics letters, 105 (2014), 152101-1-152101-5. doi: 10.1063/1.4897999

Podaci o odgovornosti

Plodinec, Milivoj ; Šantić, Ana ; Zavašnik, Janez ; Čeh, Miran ; Gajović, Andreja

engleski

Giant persistent photoconductivity in BaTiO3/TiO2 heterostructures

The persistent photoconductivity (PPC) effect in nanotube arrays of barium titanate and TiO2 (BTO/TiO2NT) was studied at room temperature under daylight illumination. The BTO/TiO2NT heterostructures exhibited a giant PPC effect that was six orders of magnitude higher than the dark conductivity, followed by a slow relaxation for 3 hours. The PPC effect in this material was explained by the existence of defects at the surfaces and the interfaces of the investigated heterostructures. The sample was prepared using a two-step synthesis: the anodization of a Ti-foil and a subsequent hydrothermal synthesis. The structural and electrical characteristics were studied by micro-Raman spectroscopy, FEG-SEM, and impedance spectroscopy.

persistent photoconductivity; BaTiO3/TiO2 heterostructures; FEG-SEM; Raman spectroscopy; impedance spectroscopy

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Podaci o izdanju

105

2014.

152101-1-152101-5

objavljeno

0003-6951

10.1063/1.4897999

Povezanost rada

Fizika

Poveznice
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