期刊
NANOMATERIALS
卷 9, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/nano9040580
关键词
antimony sulfoiodide (SbSI); ferroelectric; nanowires; photovoltaic effect; nanodevices
类别
资金
- Silesian University of Technology (Gliwice, Poland)
A ferroelectric-photovoltaic effect in nanowires of antimony sulfoiodide (SbSI) is presented for the first time. Sonochemically prepared SbSI nanowires have been characterized using high-resolution transmission electron microscopy (HRTEM) and optical diffuse reflection spectroscopy (DRS). The temperature dependences of electrical properties of the fabricated SbSI nanowires have been investigated too. The indirect forbidden energy gap E-gIf = 1.862 (1) eV and Curie temperature T-C = 291 (2) K of SbSI nanowires have been determined. Aligned SbSI nanowires have been deposited in an electric field between Pt electrodes on alumina substrate. The photoelectrical response of such a prepared ferroelectric-photovoltaic (FE-PV) device can be switched using a poling electric field and depends on light intensity. The photovoltage, generated under = 488 nm illumination of P-opt = 127 mW/cm(2) optical power density, has reached U-OC = 0.119 (2) V. The presented SbSI FE-PV device is promising for solar energy harvesting as well as for application in non-volatile memories based on the photovoltaic effect.
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