Preparation of TiO_2 and SiC Films from TheirPrecursors Using Electrospraying

• 作 者: 时方晓
• 机 构: School of Materials Science and Engineering,Shenyang Jianzhu University,
• 出 处: 沈阳建筑大学学报(自然科学版)
• 发表日期: 2004年期
• 关键词: spraying titanium sensitized dioxide pores porous drying nanotubes implies diame

Titanium dioxide(TiO2) films were prepared by cone - jet mode electrospraying a titanium ethoxideprecursor solution onto a silicon substrate.The effects of spraying time,substrate temperature and aging on thesurface morphology of the films prepared were studied.Thin films obtained after spraying for 600 s were aged atroom temperature to form a porous TiO2 network with pores in the size range of 100 - 500 nm.Thicker filmswere prepared by spraying for 3 000 s,but these cracked on drying although it can be concluded that films pre-pared using a higher substrate temperature were denser.By this method,SiC coating was also prepared on anAl2O3 substrate using polysilane as a precursor.The result implies the potential of an industrial production ofdye sensitized solar cells by electrospraying technique.

Titanium dioxide (TiO2) films were prepared by cone-jet mode electrospraying a titanium ethoxideprecursor solution onto a silicon substrate. The effects of spraying time, substrate temperature and aging on the morphology of the films prepared were studied. Thin films obtained after spraying for 600 s were aged atroom temperature to form a porous TiO2 network with pores in the size range of 100 - 500 nm.Thicker filmswere prepared by spraying for 3 000 s, but these cracked on the drying although it can be concluded that films pre-pared using a higher substrate temperature were denser.By this method, SiC coating was also prepared on an Al2O3 substrate using polysilane as a precursor. result implies the potential of an industrial production of dy sensitized solar cells by electrospraying technique.