- Gazi University Journal of Science
- Vol: 20 Issue: 4
- Current-Voltage (I-V) and Capacitance-Voltage (C-V) Characteristics of Au/Bi4Ti3O12/SnO2 Structures
Current-Voltage (I-V) and Capacitance-Voltage (C-V) Characteristics of Au/Bi4Ti3O12/SnO2 Structures
Authors : Funda Parlaktürk, Arif Agasiev, Adem Tataroğlu, Şemsettin Altindal
Pages : 97-102
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Publication Date : 2010-03-28
Article Type : Other
Abstract :The electrical properties of Au/Bi 4 Ti 3 O 12 /SnO 2 structures were investigated by forward bias I-V, forward and reverse bias C-V and G/ w -V measurements. The results indicate structural disordering, presence of the interface states in the BTO capacitors and existence of polarization. Dielectric constant( e '), dielectric loss( e '') and dielectric tangent(tan d ) were found as 170, 309 and 1,8 respectively at 50 kHz. C-V and G/ w -V were measured in the frequency range of 1 kHz-5 MHz. It was found that dielectric constant( e ') and dielectric loss( e '') systematically decrease with increasing frequency in 10 kHz-1 MHz frequency range and tan d versus frequency plot exhibits a minimum at about 5 kHz. The ideality factor and series resistance were found to be 1,5 and 1030 W respectively from I-V measurements and series resistance was found as 350 W from the measured conductance in strong accumulation region. The observations are comparable with the other values for BTO structures reported in the literature.Keywords : Au/Bi4Ti3O12/SnO2 structures, Dielectric constant, Dielectric loss, Frequency dependence, Series Resistence