Synthesis of indium tin oxide nanoparticles by a nonhydrolytic sol-gel method

Química Nova

Ciuffi, Katia J.¹  Calefi, Paulo S.¹  Silva, Gabriel M.¹  Faria, Emerson H. de¹  Nassar, Eduardo J.¹  Universidade de Franca, Franca, Brasil¹ 

关键词: ITO;    sol-gel nonhydrolitic;    nanoparticles.;   

DOI  :  10.1590/S0100-40422012000300006

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Indium tin oxide nanoparticles were synthesized in two different sizes by a nonhydrolytic sol-gel method. These powders were then transformed into ITO via an intermediate metastable state at between 300 and 600 ºC. The presence of characteristic O-In-O and O-Sn-O bands at 480 and 670 cm-1 confirmed the formation of ITO. The X-ray diffraction patterns indicated the preferential formation of metastable hexagonal phase ITO (corundum type) as opposed to cubic phase ITO when the reflux time was less than 3 h and the heat treatment temperature was below 600 ºC. Particle morphology and crystal size were examined by scanning electron microscopy.

【 授权许可】

Unknown