Influence of dopant concentration on Dispersion Parameters of ZnO:Sn Thin Films | ||
| Diyala Journal For Pure Science | ||
| Article 1, Volume 8, Issue 3, July 2012, Pages 407-420 | ||
| Authors | ||
| Sami Salman Chiad; Saad Farhan Oboudi; Nadir Fadhil Habubi; Muhammad Hameed Abdul-Allah | ||
| Abstract | ||
| Undoped and Sn doped ZnO films have been deposited by spray pyrolysis technique. The films were deposited onto glass substrate at a temperature of 450°C. The effect of tin incorporation on optical properties and dispersion parameters of ZnO films has been investigated. Optical absorption measurements were also studied by UV-VIS technique in the wavelength range 300-900 nm. The optical band gap of these films was determined. The absorption edge shifted to the lower energy depending on the dopant materials. The changes in dispersion parameters and Urbach tails were investigated as a function of Sn content. The optical energy gap decreased and the wide band tails increased in width from 442 to 546 meV as the doping concentration increased from 0wt.% to 4wt.%. The single-oscillator parametere were detennined. | ||
| Keywords | ||
| Spray Pyrolysis; transparent conducting; ZnO; Dispersion Parameters | ||
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