Nanostructured TiO2 thin films by polymeric precursor method

Quimica nova

Longo, Elson¹  Varela, José Arana¹  Stroppa, Daniel Grando²  Leite, Edson Roberto²  Giraldi, Tania Regina² 

[1] Universidade Estadual Paulista Júlio de Mesquita Filho, Araraquara, Brasil;Universidade Federal de São Carlos, São Carlos, Brasil

关键词: titanium dioxide;    thin films;    polymeric precursor.;   

DOI  :  10.1590/S0100-40422008000700020

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

This work focuses in optimizing setup for obtaining TiO2 thin films by polymeric precursor route due to its advantages on stoichiometric and morphological control. Precursor stoichiometry, synthesis pH, solids concentration and rotation speed at deposition were optimized evaluating thin films morphology and thickness. Thermogravimetry and RMN were applied for precursor's characterization and AFM, XRD and ellipsometry for thin films evaluation. Results showed successful attainment of homogeneous nanocrystalline anatase TiO2 thin films with outstanding control over morphological characteristics, mean grain size of 17 nm, packing densities between 57 and 75%, estimated surface areas of 90 m2/g and monolayers thickness within 20 and 128 nm.

【 授权许可】

CC BY