Ex) Article Title, Author, Keywords
New Phys.: Sae Mulli 2021; 71: 1-5
Published online January 29, 2021 https://doi.org/10.3938/NPSM.71.1
Copyright © New Physics: Sae Mulli.
Seaung-jae LEE, Ji-won JANG, Hye-won SEO*
Department of Physics, Jeju National University, Jeju 63243, Korea
We have grown nitrogen-doped titanium dioxide thin films by using DC magnetron sputtering methods. During the growth, the nitrogen flow was altered to adjust the amount of nitrogen into the titanium-dioxide films. By a comparative study of X-ray diffraction and Raman spectroscopy results, we found that the insertion of nitrogen led to a reduction in crystal size/volume, distortion of Ti-O bending, and displacement of Ti atoms. As the nitrogen flow was increased, the degradation of crystal quality became more severe. A blue shift of the optical energy bandgap was observed for the titanium-dioxide films with nitrogen, which is possibly related to quantum-confinement effects.
Keywords: Titanium dioxide, Nitrogen doping, Raman Spectroscopy