English, Article edition: EFFECT OF FLUORINE CONTENT ON THE MORPHOLOGICAL, STRUCTURAL, OPTICAL AND ELECTRICAL PROPERTIES OF NANOSTRUCTURED SnO2 FILMS K. K. PURUSHOTHAMAN; M. DHANASANKAR; G. MURALIDHARAN

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Physical Description
  • article
Language
  • English

Edition details

Title
  • EFFECT OF FLUORINE CONTENT ON THE MORPHOLOGICAL, STRUCTURAL, OPTICAL AND ELECTRICAL PROPERTIES OF NANOSTRUCTURED SnO2 FILMS
Author
  • K. K. PURUSHOTHAMAN
  • M. DHANASANKAR
  • G. MURALIDHARAN
Physical Description
  • article
Notes
  • This paper reports morphological and structural details, optical and electrical properties of fluorine doped SnO2 thin films prepared via spray pyrolysis route using SnCl2·2H2O as precursor and methanol as a solvent. The effect of fluorine concentration on the properties of the films is presented and discussed. X-ray diffraction pattern reveals the presence of SnO2 films in the rutile structure with a preferential growth along the (200) direction. FTIR spectrum confirms the films to be made of SnO2. EDS was used to estimate the fluorine concentration. SEM reveals the surface of FTO to be made of nanocrystalline particles. The grain size calculated using DebyeâScherrer formula is in the range of 8â34 nm. Film thickness measured using optical transmission method is in the range of 425â538 nm. The sheet resistance was found to decrease with increase in fluorine concentration, to a minimum of 6.35 Ω/​â¡ for 7.5 mol% of NH4F, and it showed an increase beyond this concentration. The 2.5 mol% of F doped films gave 95.20% transmission at 704 nm. The calculated reflectivity in the IR region is 93.57% for 7.5 mol% of F doping, and figure of merit for the same film is 0.025(Ω/​â¡)-1 at 550 nm. The total work was optimized by fixing the temperature at 550°C for the usage of Electrochromic Device preparations on FTO coated glass substrates.
  • Spray pyrolysis, FTO, SnCl2 precursor, thin films, 73.61.-r, 78.20.-e, 73.90.+f
  • RePEc:wsi:srlxxx:v:14:y:2007:i:06:p:1149-1156
Language
  • English
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