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Blue-Shifting Photoluminescence in HFCVD-Deposited Tin-Doped SRO Films

Author

Listed:
  • Daniel Diaz Tapia

    (Benemérita Universidad Autónoma de Puebla (BUAP), México)

  • Crisoforo Morales Ruiz

    (Benemérita Universidad Autónoma de Puebla (BUAP), México)

  • Reina Galeazzi Isasmendi

    (Benemérita Universidad Autónoma de Puebla (BUAP), México)

  • Héctor Pérez Ladrón de Guevara

    (Benemérita Universidad Autónoma de Puebla (BUAP), México)

  • Roberto Portillo

    (Benemérita Universidad Autónoma de Puebla (BUAP), México)

  • Roman Romano Trujillo

    (Benemérita Universidad Autónoma de Puebla (BUAP), México)

  • Antonio Coyopol

    (Benemérita Universidad Autónoma de Puebla (BUAP), México)

  • Enrique Rosendo

    (Benemérita Universidad Autónoma de Puebla (BUAP), México)

Abstract

Silicon-rich oxide (SRO) films doped with tin (Sn-SRO) were successfully deposited using hot filament chemical vapor deposition (HFCVD), with tin-doped SBA-15 as the solid source material. SBA-15 acted as a protective layer, ensuring thermal stability and enabling the controlled incorporation of tin into the SRO films. Structural and optical analyses, including Fourier- transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), and photoluminescence (PL), were performed to evaluate the films. FTIR revealed SiO2 absorption peaks and Si-O-Sn bond formation, confirming the progressive incorporation of tin. TEM demonstrated the formation of silicon nanocrystals (Si-NCs), with decreasing size as tin concentration increased. This size reduction was correlated with enhanced PL intensity and a blue shift, attributed to stronger quantum confinement effects. These analyses provide a comprehensive understanding of the structural and optical behavior of Sn-doped SRO films. These findings highlight the potential of Sn-SRO films for optoelectronic applications, where controlling light emission and crystallinity is essential.

Suggested Citation

  • Daniel Diaz Tapia & Crisoforo Morales Ruiz & Reina Galeazzi Isasmendi & Héctor Pérez Ladrón de Guevara & Roberto Portillo & Roman Romano Trujillo & Antonio Coyopol & Enrique Rosendo, 2025. "Blue-Shifting Photoluminescence in HFCVD-Deposited Tin-Doped SRO Films," European Journal of Engineering and Technology Research, European Open Science, vol. 10(1), pages 26-32, January.
    • Handle: RePEc:epw:ejeng0:v:10:y:2025:i:1:id:63225
    DOI: 10.24018/ejeng.2025.10.1.3225
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