Journal
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
Volume 29, Issue 5, Pages 3648-3656Publisher
SPRINGER
DOI: 10.1007/s10854-017-8295-2
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Funding
- DST (India) under the scheme of the Science and Engineering Research Board (SERB) [SB/FTP/PS-131/2013]
- Ministry of Trade, Industry and Energy (MOTIE, Korea) [10063682]
- National Research Foundation of Korea (NRF) - Ministry of Education [2017R1D1A1A09000823]
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Fluorine-doped tin oxide (SnO2:F, FTO) thin films were prepared by the nebulized spray pyrolysis technique on glass substrates using tin(IV) chloride pentahydrate (SnCl2 center dot 5H(2)O) and ammonium fluoride (NH4F) as source materials. Different volumes of solvent were used to prepare the spray solution, and their effects on structural, optical, morphological, and electrical properties were investigated. X-ray diffraction patterns revealed the polycrystalline tetragonal structure of FTO films. FESEM images demonstrated well-aligned trigonal-shaped nano-grains. Optical band gap values were estimated to be in the range of 3.71-3.66 eV by Tauc's plot. The effects of solvent volume on the resistivity, conductivity, carrier concentration, mobility, and figure of merit of FTO films were examined. The lowest electrical resistivity and sheet resistance values were 1.90 x 10(-4) Omega cm and 4.96 Omega/cm, respectively.
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