Optical properties of sol-gel derived La-doped PbTiO3 thin films

Gimtong T. Teowee; C. D. Baertlein; E. L. Quackenbush; Sharnaz Motakef; J. M. Boulton; Donald R. Uhlmann

doi:10.1117/12.188996

13 October 1994 Optical properties of sol-gel derived La-doped PbTiO₃ thin films

Gimtong T. Teowee, C. D. Baertlein, E. L. Quackenbush, Sharnaz Motakef, J. M. Boulton, Donald R. Uhlmann

Proceedings Volume 2288, Sol-Gel Optics III; (1994) https://doi.org/10.1117/12.188996
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

A series of sol-gel derived, La-doped PbTiO₃ films, with compositions Pb_1-x/100 La_x/100 Ti_1-x/400 O₃ (PLTX) with La content, x equals 0, 5, 10, 15, 20, 25, 28, 30, and 32 were prepared on Corning 7059 substrates. These films were fired at 400 - 600 degree(s)C for 30 mins. The phase assembly and phase development were dependent on the precursor chemistries (La content) and processing (firing temperature). The grain size of the crystallized PLT films decreased with higher La content, and PLT films with higher La contents appeared denser. The optical properties of the films were investigated using UV - VIS transmission spectroscopy. Depending on composition and processing conditions, PZT films (2500 A thick) with refractive indices of 2.00 - 2.56, sufficient for waveguiding on Corning 7059 glasses with refractive index of 1.53, and band gaps of 3.11 - 3.55 eV can be obtained. Exhibiting high refractive indices, these amorphous and crystalline PLT films can be utilized for both passive and active optical applications.

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Gimtong T. Teowee, C. D. Baertlein, E. L. Quackenbush, Sharnaz Motakef, J. M. Boulton, and Donald R. Uhlmann "Optical properties of sol-gel derived La-doped PbTiO₃ thin films", Proc. SPIE 2288, Sol-Gel Optics III, (13 October 1994); https://doi.org/10.1117/12.188996

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