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Investigation of optoelectronic properties of spin-coated SnO2/Al2O3 nanoflower thin film

R. MAHANTA1, P. CHETRI1,* , K. C. HANDIQUE2

Affiliation

  1. Department of Physics, Debraj Roy College (Autonomous), Golaghat 785621, Golaghat, Assam, India
  2. Department of Physics, Jengraimukh College, Majuli 785105, Assam, India

Abstract

In this work, three thin films of pure SnO2 and pure Al2O3 and SnO2/Al2O3 composite are synthesized via sol-gel-assisted spin coating technique. The UV-Visible absorbance, transmittance, and reflectance measurements of these films are analysed to determine their optical properties. An X-ray diffractometer (XRD), scanning electron microscope (SEM), and Fourier transform infrared (FTIR) spectrometer are also used to investigate the structural characteristics of these spincoated films. SEM images demonstrate the formation of nanoflowers in SnO2/Al2O3 thin film. I-V characterization reveals that pure SnO2 and Al2O3 films exhibit ohmic characteristics but their composite counterpart i.e. SnO2/Al2O3 film demonstrates non-ohmic characteristics.

Keywords

Sol-gel, Spin-coating, Nanoflower, I-V characteristics.

Citation

R. MAHANTA, P. CHETRI, K. C. HANDIQUE, Investigation of optoelectronic properties of spin-coated SnO2/Al2O3 nanoflower thin film, Optoelectronics and Advanced Materials - Rapid Communications, 19, 1-2, January-February 2025, pp.111-124 (2025).

Submitted at: Aug. 23, 2024

Accepted at: Feb. 3, 2025