کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5366243 | 1388346 | 2009 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effect of fluorine doping on highly transparent conductive spray deposited nanocrystalline tin oxide thin films Effect of fluorine doping on highly transparent conductive spray deposited nanocrystalline tin oxide thin films](/preview/png/5366243.png)
The undoped and fluorine doped thin films are synthesized by using cost-effective spray pyrolysis technique. The dependence of optical, structural and electrical properties of SnO2 films, on the concentration of fluorine is reported. Optical absorption, X-ray diffraction, scanning electron microscope (SEM) and Hall effect studies have been performed on SnO2:F (FTO) films coated on glass substrates. The film thickness varies from 800 to 1572 nm. X-ray diffraction pattern reveals the presence of cassiterite structure with (2 0 0) preferential orientation for FTO films. The crystallite size varies from 35 to 66 nm. SEM and AFM study reveals the surface of FTO to be made of nanocrystalline particles. The electrical study reveals that the films are degenerate and exhibit n-type electrical conductivity. The 20 wt% F doped film has a minimum resistivity of 3.8 Ã 10â4 Ω cm, carrier density of 24.9 Ã 1020 cmâ3 and mobility of 6.59 cm2 Vâ1 sâ1. The sprayed FTO film having minimum resistance of 3.42 Ω/cm2, highest figure of merit of 6.18 Ã 10â2 Ωâ1 at 550 nm and 96% IR reflectivity suggest, these films are useful as conducting layers in electrochromic and photovoltaic devices and also as the passive counter electrode.
Journal: Applied Surface Science - Volume 255, Issue 23, 15 September 2009, Pages 9358-9364