Structural evolution, dielectric and electro-optic properties of sol-gel derived potassium titanyl phosphate thin films

• Published in: Journal of materials science Vol. 35; no. 19; pp. 4931 - 4935
• Main Authors: JIANPING ZHANG, LEE, Burtrand I, FEILING WANG
• Format: Journal Article
• Language: English
• Published: Heidelberg Springer 01-10-2000; Springer Nature B.V
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Crystallization; Dielectric properties; Dielectric thin films; Dielectrics, piezoelectrics, and ferroelectrics and their properties; Evolution; Exact sciences and technology; Frequency ranges; Gels; Insulators; Irradiation; Materials science; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of specific thin films; Physics; Potassium; Potassium titanyl orthophosphate; Sol-gel processes; Structure and morphology; thickness; Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties); Thin film structure and morphology; Thin films; Ultraviolet radiation; Frequency dependence; Inorganic compounds; Physical radiation effects; Transition element compounds; Crystallization; Titanyl Phosphates; Potassium Phosphates; Experimental study; Thin films; Ultraviolet radiation; Electro-optical effects; Microstructure; Quaternary compounds; Permittivity; Transparent material; Sol-gel process
• ISSN: 0022-2461; 1573-4803
• DOI: 10.1023/A:1004882425588

Transparent potassium titanyl phosphate (KTiOPO4) thin films were prepared by a sol-gel coating technique. The structural evolution of the KTP thin films was examined by means of DTA/TGA, FT-IR, XRD and SEM. The effect of UV irradiation on the crystallization behavior was investigated and it was found that the UV irradiation decreases the crystallization temperature of the KTP thin films and dried gels. The dielectric and electro-optic properties were evaluated. The dielectric measurement results show that the KTP thin films have a low dielectric constant of ∼12 in the temperature range of 25–100 °C and frequency range of 1–1000 kHz. The electro-optic results indicate that the KTP thin films exhibit a quadratic electro-optic effect and may have potential applications for electro-optic devices.