CHEN Ruqi, ZHU Guiwen, XU Chudong. Structural and Properties of BiFeO3 Thin Film Using a Chemical Solution Deposition Method[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2015,54(1):79-83.
CHEN Ruqi, ZHU Guiwen, XU Chudong. Structural and Properties of BiFeO3 Thin Film Using a Chemical Solution Deposition Method[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2015,54(1):79-83.DOI:
(BFO) thin films were prepared on ITO glass substrates using a chemical solution deposition method. The thin films exhibited pure perovskite structure
no secondary phase was observed. Meanwhile
they were smooth
dense and crack-free with small grain size of about 45 nm. Good electrical properties were observed in the films annealed at 550 ℃ for 1 h. The relative permittivity and the dissipation factor (at 1 kHz) were 198 and 3%
respectively. Driven by a electric field of 760 kV/cm
BFO showed 2P
r
of 25 μC/cm
2
and 2E
c
of 650 kV/cm. The optical band gap of BFO thin films was 2.7 eV. These results indicated that the BFO thin films annealed at 550 ℃ had excellent properties and they had potentials in opticoelectric devices.
关键词
化学溶液沉积法BiFeO3相对介电常数损耗因子光学带隙
Keywords
chemical solution deposition methodBFOrelative permittivitydielectric lossoptical band gap