Polaronic transport in TiO 2 thin films with increasing Nb content
Philosophical Magazine, cilt.91, sa.34, ss.4401-4409, 2011 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 91 Sayı: 34
- Basım Tarihi: 2011
- Doi Numarası: 10.1080/14786435.2011.623143
- Dergi Adı: Philosophical Magazine
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.4401-4409
- Anahtar Kelimeler: Electrical transport, Small polaron hopping model, Thin films, Titanium oxide
- Ankara Yıldırım Beyazıt Üniversitesi Adresli: Evet
Özet
The temperature dependence of the charge transport in TiO 2 films was investigated to establish the correlation between the Nb content and electrical properties. It was identified that temperature-dependent conductivity of the films is dominated by a phonon-assisted small polaron hopping model in the non-adiabatic regime. Applying the polaron hopping models of Mott, Schnakenberg and Emin to describe the observed behavior, temperature-dependent conductivity data of the films were analyzed. A detailed analysis in terms of small polaron hopping parameters in the investigated temperature regime was used to correlate electrical properties with the percentage of Nb. © 2011 Taylor & Francis.