• Growth and characterization of MMA/SiO2 hybrid low-𝑘 thin films for interlayer dielectric applications

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      https://www.ias.ac.in/article/fulltext/boms/033/03/0197-0201

    • Keywords

       

      MMA incorporation; low refractive index; low dielectric constant; optical interconnects; interlayer applications.

    • Abstract

       

      The methylmethacrylate (MMA) incorporated SiO2 thin films having low dielectric constant (𝑘 = 2.97) were deposited successfully to realize new interlayer material for the enhancement of electrical performance of on-chip wiring in very large scale integrated (VLSI) circuits. We have successfully incorporated MMA monomer and eliminated the polymerization step to lower the dielectric constant of deposited thin film. The presence of peak of C=C bond in Fourier transform infrared (FTIR) spectra and carbon peak in energy dispersive (EDAX) spectra confirms the incorporation of carbon in the film due to MMA. The concentration of MMA has great impact on the peak area and full width at half maxima (FWHM) of the Si–O–Si bond, which decreases the density by low atomic weight elements and consequently decreases the dielectric constant. The surface morphology analysed by scanning electron microscopic (SEM) image shows excellent uniformity of the film. The refractive index of 1.31 was measured by ellipsometer for 0.5 ml MMA concentration film. These deposited thin films having low refractive index and dielectric constant are widely applicable for the optical interconnects and interlayer applications in integrated optical circuits and VLSI circuits.

    • Author Affiliations

       

      Bhavana N Joshi1 M A More2 A M Mahajan1

      1. Department of Electronics, North Maharashtra University, Jalgaon 425 001, India
      2. Department of Physics, University of Pune, Pune 411 008, India
    • Dates

       
  • Bulletin of Materials Science | News

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