Thermo-mechanical behavior of thick PECVD oxide films for power MEMS applications

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Abstract

This paper presents residual stress characterization and fracture analysis of thick plasma-enhanced chemical vapor deposition (PECVD) oxide films. The motivation for this work is to elucidate the factors contributing to residual stress, deformation and fracture of silicon oxide films so as to refine the microfabrication process for power microelectromechanical systems (MEMS) manufacturing. The stress-temperature behavior of PECVD oxide films during annealing was studied. Analyses of residual stress relaxation, intrinsic stress generation, and the large deformation response of wafers were carried out. Preliminary experimental observations and estimates of oxide fracture were also provided.

Original languageEnglish
Pages (from-to)263-270
Number of pages8
JournalSensors and Actuators, A: Physical
Volume103
Issue number1-2
DOIs
Publication statusPublished - 2003 Jan 15

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering

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