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Published on: December 5, 2015
Modification of WO(3) thin films by MeV N(+)-ion beam irradiation
R Sivakumar1, C Sanjeeviraja, M Jayachandran
1Institute of Physics, Sachivalaya Marg, Bhubaneswar 751 005, India.
Abstract:
In this paper, we report on modification of the structural, optical, vibrational, and surface morphological properties of 2 MeV N(+)-ion irradiated WO(3) thin films at different fluences (up to 1 × 10(15) ions cm(-2)). Although we observe irradiation induced grain growth, no structural phase transition takes place in the WO(3) films. These are accompanied by a systematic reduction in the optical band gap of the films. These observations are corroborated by our independent micro-Raman and optical absorption spectroscopy studies. We have made an attempt to correlate these results with MeV ion-matter interaction.
