Physical properties of CdS thin films grown by pulsed laser ablation on conducting substrates: effect of the thermal treatment

Abstract

Structural, morphological and optical properties of CdS films, deposited by the pulsed laser ablation technique on SnO2:F/glass substrates, were studied as a function of time deposition. Up to our knowledge the properties of these films grown onto conducting polycrystalline substrates have not been reported before. The photoluminescence measurements showed the existence of an exciton peak at room temperature, as an indication of good crystalline quality of the layers. A thermal treatment was applied to the samples in a 100 mT Ar atmosphere at 400 °C for 30 min after the deposition of a CdCl2 layer on them. Films characterization was carried out through X‐ray diffraction, photoluminescence and atomic force microscopy measurements. The structural, optical and morphological properties as a function of growth parameters are presented and discussed. Thermal treatment makes uniform the grain size in the samples, with a tendency to increase the grain size average. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

Comparison of cadmium sulfide thin films deposited on glass and polyethylene terephthalate substrates with thermal evaporation for solar cell applications

“…sputtering [13], metal organic chemical vapor deposition [14], pulsed-laser deposition [15] and physical vapor deposition [16]. Of the various deposition methods, vacuum evaporation is known to be suitable for preparing CdS films for a wide range of applications.…”

Ultrafast Laser Ablation and Deposition of Wide Band Gap Semiconductors

“…Nanostructures of II−VI semiconductor materials such as CdS and ZnS are attracting expanding interest because they show significant quantum confinement effects which influence their electrical and optical properties. ,, The possibility to tune the properties of the nanostructures also motivates research into their application in photovoltaic, photonic, and optoelectronic devices and sensors. Nanoparticles and nanostructures of CdS and ZnS have been produced using wet chemistry methods, Langmuir-Blodget, sputtering, molecular beam epitaxy, and PLD with nanosecond and femtosecond pulses. ,− In previous work, we have shown that laser deposits produced by ablating a CdS target with pulses of 60 fs, focused down to a beam diameter of 50 μm, at three different wavelengths of 266, 400, and 800 nm consist of isolated nanoparticles with average diameters that scale with wavelength. In order to explore further the wavelength effect in fs PLD, in this work, CdS and ZnS nanostructured deposits have been grown on Si(100), glass, and mica substrates by laser ablating CdS and ZnS targets in vacuum using ≈300 fs laser pulses at 527 and 263 nm.…”

Femtosecond Pulsed Laser Deposition of Nanostructured CdS Films

“…CdS nanoparticles and nanostructures have been produced using different methods including chemical colloidal synthesis, sol−gel, electrochemical deposition, Langmuir−Blodget, sputtering, molecular beam epitaxy, and so forth . In particular, PLD has served to fabricate nanostructured CdS films using pulses of both nanosecond (ns) − and fs − duration. In the case of ns PLD, intensive studies of the features of the deposits as a function of pulse laser duration and wavelength have been performed (for example ref and references therein).…”