Effect of Fluorine Concentration on Structural, Electrical and Optical Properties of SnO2:F Thin Films Orepared by Spray Pyrolysis Technique

Abdulmohsin Jabber, Mushtak; Attia Kudhier, Muhsin

	Effect of Fluorine Concentration on Structural, Electrical and Optical Properties of SnO2:F Thin Films Orepared by Spray Pyrolysis Technique
journal of the college of basic education
Article 1, Volume 23, Issue 98, 2017, Pages 11-22
Authors
Mushtak Abdulmohsin Jabber; Muhsin Attia Kudhier
Abstract
Fluorine doped tin oxide, SnO2: F (FTO) thin films deposited on glass substrates at 405±2˚C have been prepared using Spray Pyrolysis Technique. Structural, electrical and optical properties of FTO thin films under different doping concentration (5, 15, 20, 25 and 30) wt% are investigated using XRD patterns, Hall effect measurement and UV–Vis spectrophotometry. X-ray diffraction studies of FTO films indicate that all films are polycrystalline with tetragonal structure. The lattice constants a and c vary from (4.7269 to 4.7557)Å and (3.2548 to3.2103) Å respectively. While the crystallite size D varies from 8.07 to 7.85 nm. Electrical measurements showed that all the films are of n-type conductivity. Carriers mobility (μ), concentration of carrier (n) and resistivity (ρ) reached 6.05 cm2/Vs, 5.62x1019cm-3 and 8.79x10-2 Ω cm, respectively. The energy gap decrease from 3.9 to 3.78 eV with increase fluorine concentration from (5-30) wt% respectively. FTO films can be used as conducting layers(Electrodes) in photovoltaic devices.
Keywords
Sno; spray pyrolysis; thin films

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