1. Nanostructured Iron-Doped Indium Tin Oxide Films: Synthesis and Characterization
- Author
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Antonio Ruotolo, Juan Antonio Zapien, Pui Sze Ku, Chi Wah Leung, and Qi Shao
- Subjects
Potential well ,Materials science ,business.industry ,Doping ,Analytical chemistry ,Magnetic semiconductor ,Electronic, Optical and Magnetic Materials ,Pulsed laser deposition ,Indium tin oxide ,Ferromagnetism ,Sapphire ,Optoelectronics ,Electrical and Electronic Engineering ,Luminescence ,business - Abstract
Multifunctional, Fe-doped indium tin oxide (ITO) nanostructured films were grown by pulsed laser deposition on sapphire substrates. The films showed low resistivity and n-type conductivity with a carrier density as high as $3\times 10^{21}~{\rm cm}^{-3}$ . A magnetic moment at room temperature larger than those of any iron oxides was measured in films with Fe doping as low as 2%. We ascribe it to the formation of bound polarons. A strong green photoemission at room temperature was observed, which we ascribe to quantum confinement effect. The coexistence of ferromagnetism and luminescence in the visible range makes our films of potential for magneto-optoelectronic applications.
- Published
- 2014
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