XRD RAMAN AND Uv-vis SPECTROSCOPICAL ANALYSIS OF NANOSTRUCTURED CdS:Li FILMS

Year 2018, Volume: 19 Issue: 1, 114 - 121, 31.03.2018

Tülay Hurma

https://doi.org/10.18038/aubtda.333956

Abstract

CdS and CdS:Li films were produced my means of
ultrasonic spray pyrolysis (USP) method by spraying on glass bases heated up to
340±5 ^◦C. LiCl in three different rates was added
into the preliminary solution while producing CdS:Li films. The effect of Li on
the structural and optical characteristics of the CdS film was analyzed. XDR
spectra showed that the crystallization degree decreases while lithium is 15%
and increases when lithium rate increases. The crystallite sizes were
calculated to be in the range of 60-85 nm. SEM photographs showed that the
contribution of Li changed surface appearances of films and particle size. All films
exhibit the Raman peaks centered 298 and 590 cm^-1 and the peak
profiles are almost symmetric. The optical band gap and Urbach energy values of
these films were determined. The maximum transmittance is found to be almost
80% for the visible region. LiCl which was added to the preliminary solution
changed the optical characteristics of CdS film. 

Keywords

Li doped CdS film; XRD; Raman; Optical properties

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