Effect of thickness on optical properties of thermally evaporated SnS films

Selim, M.M.; Gouda, Mohamed; El-Shaarawy, M.G.; Salem, A.M.; El-Ghany, W.A. Abd

doi:10.1016/j.tsf.2012.10.019

Cited by 41 publications

(14 citation statements)

References 21 publications

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“…The variations in and with wavelength are shown inFigures 6 and 7. The refractive index varied in the range 3.1-3.3 whereas the extinction coefficient changed from 0.03 to 0.1 as observed by other works in the literature[19][20][21].…”

supporting

confidence: 67%

Properties of Tin Monosulphide Films Grown by Chemical Bath Deposition

Gedi

Reddy

2013

Conference Papers in Energy

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Tin monosulphide (SnS) films have been successfully grown by a simple and low-cost wet chemical process, chemical bath deposition (CBD), using tin chloride and thioacetamide as precursors and tartaric acid as complexing agent. The layers were grown on glass substrate at different bath temperatures (Tb) that varied in the range 50–70°C. The energy dispersive X-ray analysis (EDAX) studies showed that all the grown films were nearly stoichiometric. The X-ray diffraction analysis indicated that the films had an intense peak at 31.6° that corresponds to the (111) plane of SnS and exhibited orthorhombic crystal structure. The intensity of (111) plane increases with the increase in bath temperature and became sharp atTb=70°C, where the other crystal planes got suppressed, this indicates better crystallinity of the layers grown at this temperature. No other secondary phases of tin sulphide were observed. The structural parameters such as lattice constants and crystallite size were also calculated. The optical studies revealed that the layers had high optical absorption coefficient (>104 cm−1). The energy band gap was found to be allowed and direct and varied between 1.30 eV and 1.35 eV. The band gap decreased with the rise in bath temperature. The refractive index and the extinction coefficient were also evaluated. The details of these results will be presented and discussed.

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confidence: 67%

Properties of Tin Monosulphide Films Grown by Chemical Bath Deposition

Gedi

Reddy

2013

Conference Papers in Energy

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“…Bulk Se 75 Te 25 and Se 75 Te 17 Ge 8 alloys have prepared from the melt by a quenching technique. The corresponding thin films have successfully deposited onto glass 5.…”

Section: Discussionmentioning

confidence: 99%

“…Whereas, the guessed value k i is estimated from the following equation [24]: It is clearly seen that the refractive index shows anomalous dispersion in the wavelength spectral range 500-850 nm beyond which (λ 4850 nm) the variation of the refractive index shows normal dispersion behavior. The observed anomalous dispersion was attributed to the resonance effect between the incident electromagnetic radiation and the electron's polarization, which leads to the coupling of electrons in the deposited films at the oscillating electric field [25]. In the normal dispersion region above (λ4 850 nm), the refractive index dispersion can be analyzed by using the effective single-oscillator model, developed by Wemple and DiDomenico [26].…”

Section: Structural Characterizationmentioning

confidence: 99%

Structural characterization and optical properties of pulsed laser deposition of Se75Te25 and Se75Te17Ge8 amorphous thin films

Salim

Lahmar

Zayied

et al. 2015

Materials Science in Semiconductor Processing

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“…So the decrease in bandgap in these films with increase in deposition time can be attributed mainly to increase in both the grain size and the film thickness with increase in deposition time. For SnS thin films, decrease in band gap with increase in film thickness has been observed several times for films deposited at near room temperature [23][24]38,62]. Use of SnS thin films with the band gap of the order of 1.7 eV as absorber layer deposited by CBD have been reported recently [43].…”

Section: Optical Analysismentioning

confidence: 96%

Influence of Deposition Time on Structural and Optical Properties of Chemically Deposited SnS Thin Films

Patel¹

2012

TOSURSJ

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Using chemical bath deposition (CBD) technique SnS thin films have been deposited at room temperature with different deposition times. The deposited films have been investigated through X-ray diffraction measurements to determine structural properties. The deposited SnS films found amorphous and polycrystalline with an orthorhombic herzenbergite structure. The grain size found to increase with deposition time. The surface morphology of the films has been examined using scanning electron microscopy (SEM). The chemical compositions of the films have been determined using energy dispersive analysis of x-rays (EDAX). The optical absorption spectra of the films in the wavelength range of 200-1200 nm have been investigated to determine the optical band gap and types of transitions involved in the absorption process. The direct allowed transitions found to be dominant and the corresponding band gap found to decrease with increase in deposition time. In order to evaluate the electrical parameters, thermoelectric power measurements have been performed. The films exhibited p-type electrical conductivity. A systematic study on the influence of deposition time on the properties of SnS thin films deposited by CBD at room temperature has been reported.

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Effect of thickness on optical properties of thermally evaporated SnS films

Cited by 41 publications

References 21 publications

Properties of Tin Monosulphide Films Grown by Chemical Bath Deposition

Properties of Tin Monosulphide Films Grown by Chemical Bath Deposition

Structural characterization and optical properties of pulsed laser deposition of Se75Te25 and Se75Te17Ge8 amorphous thin films

Influence of Deposition Time on Structural and Optical Properties of Chemically Deposited SnS Thin Films

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