Tin-doped In2 O3 (indium-tin oxide, ITO) transparent conducting films were deposited between 200 and 400°C on stripe-patterned Si substrates by spray chemical vapor deposition. ITO films with a homogeneous tin composition and crystallinity were successfully fabricated. The step coverage increased as the deposition temperature decreased and reached 90% at 200°C. Postdeposition annealing lowered the resistivity to 3.3× 10-4 cm, which is approximately homogeneous because the measured resistance agreed well with the calculated one assuming the resistivity value of the film deposited on a flat surface and considering the film thickness of various portions. These films should contribute to optoelectric devices.
ASJC Scopus subject areas
- Chemical Engineering(all)
- Materials Science(all)
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering