Influence of Heat Treatment on Structure and Charge Capacity of Sol-Gel Produced TiO2 Films


Özdemir O. , Gökdemir F. P. , Keskin B. , Kutlu K.

International Congress on Energy Efficiency and Energy Related Materials ENEFM2013, Oral,A.Y.,Bahsi,Z.B.,Ozer,M., Editör, Springer, Zürich, ss.307-313, 2013

  • Basım Tarihi: 2013
  • Yayınevi: Springer
  • Basıldığı Şehir: Zürich
  • Sayfa Sayıları: ss.307-313
  • Editörler: Oral,A.Y.,Bahsi,Z.B.,Ozer,M., Editör

Özet

Titanium dioxide thin films were synthesized by sol–gel route from titanium isopropoxide (TIP) with acetic acid. Prior to the heat treatment, the films were amorphous phase. Above 400 °C, phase transition took place from amorphous into anatase phase. Electrochromic properties of each phase indicated reversible coloration upon Li+ ion intercalation in cyclic voltammetric measurements. Nevertheless, both charge capacity and energy band gap of films begun to decrease with increase in annealing temperature due to the crystallization.

Keywords: Phase transition Decrease in band gap CV