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

G. Teowee, C. D. Baertlein, E. L. Quackenbush, S. Motakef, J. M. Boulton, D. R. Uhlmann

Research output: Contribution to journalConference articlepeer-review

5 Scopus citations


A series of sol-gel derived, La-doped PbTiO3 films, with compositions Pb1-x/100 Lax/100 T1-x/400O3 (PLT X) with La content, x = 0, 5, 10, 15, 20, 25, 28, 30 and 32 were prepared on Coming 7059 substrates. These films were fired at 400-600C 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 (2500A thick) with refractive indices of 2.00-2.56, sufficient for waveguiding on Coming 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.

Original languageEnglish (US)
Pages (from-to)599-608
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - Oct 13 1994
EventSol-Gel Optics III 1994 - San Diego, United States
Duration: Jul 24 1994Jul 29 1994


  • Ferroelectric
  • La
  • Loss
  • Optical
  • PbTiO films
  • Refractive index

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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