A DoE–TOPSIS meta-model for parametric optimization of silicon carbonitride (SiCN) thin film deposition process

  • Dhruva Kumar
  • Partha Protim Das
  • Shankar Chakraborty
  • Ashis Sharma
  • Bibhu P. SwainEmail author
Technical Paper


Silicon carbonitride (SiCN) thin films were deposited on p-type Si(100) substrate by thermal chemical vapour deposition process using SiC and Si3N4 nanopowder as the source, and mixture of N2 and H2 as precursor gases. For the experimental design, Taguchi’s L25 orthogonal array was used considering H2 flow rate, N2 flow rate and deposition temperature as the input deposition parameters, while taking into account, ID/IG ratio, hardness and Young’s modulus as the responses. Design of experiments integrated with technique for order of preference by similarity to ideal solution (TOPSIS) method was applied to develop a corresponding meta-model so as to obtain the optimal parametric combination of the deposition process with respect to the computed TOPSIS score. It was found that optimal parametric combination of H2 flow rate as 60 sccm, N2 flow rate as 100 sccm and deposition temperature as 1300 °C results in improved values of ID/IG ratio, hardness and Young’s modulus. The microstructure, chemical bonding and mechanical properties of SiCN thin films were characterized using Atomic force microscopy, Raman spectroscopy and nano-indentation techniques. As the developed meta-model is solely based on the analysis of the data obtained from experimentation, it is more practical and immune of introducing any additional parameter in the analysis. Moreover, the developed surface plots will further help the process engineer in selecting the most suitable combination of deposition parameters for achieving desirable responses.


Thermal CVD SiCN Raman Design of experiments TOPSIS Meta-model 



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Copyright information

© The Brazilian Society of Mechanical Sciences and Engineering 2019

Authors and Affiliations

  • Dhruva Kumar
    • 1
  • Partha Protim Das
    • 1
    • 2
  • Shankar Chakraborty
    • 2
  • Ashis Sharma
    • 1
  • Bibhu P. Swain
    • 3
    Email author
  1. 1.Department of Mechanical EngineeringSikkim Manipal Institute of Technology, Sikkim Manipal UniversitySikkimIndia
  2. 2.Department of Production EngineeringJadavpur UniversityKolkataIndia
  3. 3.Department of PhysicsNational Institute of Technology ManipurImphalIndia

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