Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 699, Issue -, Pages 68-72Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.12.333
Keywords
Ceramics; Vapor deposition; Dielectric response; Optical properties; Thin films
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Funding
- Chinese National Natural Science Foundation [61671326]
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This paper covers the fabrication of a novel transparent capacitor with high dielectric tunability using Sb-doped SnO2/Ag/Bi1.5MgNb1.5O7/W-doped SnO2 structure and its observed dielectric tunable characteristics. This kind of Bi1.5MgNb1.5O7-based transparent capacitor shows an average optical transmittance of similar to 80% (including the substrate) in the visible light range (380-780 nm), and a dielectric tunability of similar to 18% (0.83 MV/cm) at 100 kHz, while the dielectric constant and loss tangent are about 87 and 0.0032 at zero bias field, respectively. The transparent capacitor exhibits a leakage current density of approximately 5.8 x 10(-7) A/cm(2) at 0.4 MV/cm. We believe that Bi1.5MgNb1.5O7-based capacitors are a promising candidate for transparent electric-field tunable device applications. (C) 2016 Elsevier B.V. All rights reserved.
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