| Autor: |
Biswas, Pranab Parimal, Chinthakuntla, Thirmal, Duraisamy, Dhayanithi, Venkatesan, Giridharan Nambi, Venkatachalam, Subramanian, Murugavel, Pattukkannu |
| Předmět: |
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| Zdroj: |
Applied Physics Letters; 5/8/2017, Vol. 110 Issue 19, p1-4, 5p |
| Abstrakt: |
A polycrystalline BiFeO3 film on Pt/Ti/SiO2/Si was fabricated using the spin coating technique. The film shows diode-like characteristics with and without poling measured under dark conditions. However, it exhibits a switchable photovoltaic effect with light illumination under poled condi- tions. The measured photovoltaic effect revealed an open circuit voltage of ~0.47V and a short circuit current of 3.82 µA/cm² under the illumination of 165 mW/cm² irradiance. The studies clarified the dominant role of the depolarization field rather than the interface in the photovoltaic characteristics of the BiFeO3 film. Significantly, the photo-capacitance effect was demonstrated with a substantial enhancement in capacitance (~45%) in Au/BiFeO3/Pt geometry, which could open up a new window for BiFeO3 applications. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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