27. Effect of Temperature and Spin-Coating Cycles on Microstructure Evolution for Tb-Substituted SrCeO3 Thin Membrane Films

  1. Dongming Zhu,
  2. Uwe Schulz,
  3. Andrew Wereszczak and
  4. Edgar Lara-Curzio
  1. Satyajit Shukla2,
  2. Mohamed M. Elbaccouch1,
  3. Sudipta Seal2 and
  4. Ali T-Raissi1

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291320.ch27

Advanced Ceramic Coatings and Interfaces: Ceramic Engineering and Science Proceedings, Volume 27, Issue 3

Advanced Ceramic Coatings and Interfaces: Ceramic Engineering and Science Proceedings, Volume 27, Issue 3

How to Cite

Shukla, S., Elbaccouch, M. M., Seal, S. and T-Raissi, A. (2006) Effect of Temperature and Spin-Coating Cycles on Microstructure Evolution for Tb-Substituted SrCeO3 Thin Membrane Films, in Advanced Ceramic Coatings and Interfaces: Ceramic Engineering and Science Proceedings, Volume 27, Issue 3 (eds D. Zhu, U. Schulz, A. Wereszczak and E. Lara-Curzio), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291320.ch27

Author Information

  1. 1

    Florida Solar Energy Center University of Central Florida 1679 Clearlake Road Cocoa, FL 32922–5703

  2. 2

    Advanced Materials (AMPAC) & Mechanical, Materials, and Aerospace Engineering University of Central Florida 4000 Central Florida Blvd, Engineering 381 Orlando, FL 32816–2450

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2006

ISBN Information

Print ISBN: 9780470080535

Online ISBN: 9780470291320

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Keywords:

  • SCT;
  • SEM;
  • FIB;
  • XRD;
  • AMPAC

Summary

Ceramic oxides with perovskite structures (A2+B++O3) have been receiving considerable attention in the solid-state electrochemical systems, such as the development of solid oxide fuel cells (SOFCs), gas sensors, and hydrogen (H2) permeable membranes. The goal of this investigation is to process a terbium-doped strontium cerate (SrCe0.95Tb0.05O3.δ) (SCT) thin membrane films by spin-coating using ethylene glycol-based polymeric precursor. Continuous and dense SrCe0.95Tb0.05O3-δ membrane thin films with neither pin-holes nor cracks are reported. The thicknesses of the membrane films are within the range of ∼ 200 nm—2 μrn For a single spin-coating cycle, the membrane film (200 nm thick) appears to be discontinues. However, the membrane films are dens for multiple spin-coating cycles. The polymeric precursor and the microstructure of the SrCe0.95Tb0.05O3-δ membranes are characterized using scanning electron microscopy (SEM), focused ion-beam (FIB) microscopy, and x-ray diffraction (XRD). This work reveals that good film quality with uniform texture and homogeneous structure can be produced via spin-coating technique as a function of spin-coating cycles and processing temperature. Also, surface morphology and grain size strongly depend on sintering temperature with even grain size distribution for each sintering temperature. The flexibility of the present process approach demonstrates the capability of precisely controlling the thickness of the ceramic membrane films within a sub-micron range.