Formation and properties of copper chalcogenides thin films on polymers formed using sodium telluropentathionate

Abstract

The preparative conditions were optimized to get chalcogens layers on the polymer − polyamide PA surface by sorption at room temperature using sodium telluropentathionate, Na 2 TeS 4 O 6 . Further interaction of chalcogenized dielectric with copper's (I/II) salt solution leads to the formation of mixed Cu x S y -Cu x Te y layers. Optical, electrical and surface characteristics of the layers are highly controlled by the deposition parameters. The stoichiometry of these layers was established by UV-Visible and AA spectrometry. Optical absorption (transmittance) experiments show the samples are of high optical quality. The band gaps of thin films were obtained from their optical absorption spectra, which were found in the range of 1.44-2.97 eV. XRD was used in combination with AFM to characterize chalcogenides layers' structural features. XRD analysis confirmed the formation of mixed copper chalcogenides' layers in the surface of PA with binary phases such as Cu

Structural and Optical Characterizations of Cadmium Chalcogenide Layers on Polyamide Formed Using Monotelluropentathionic Acid

“…Only chemical methods used in the formation process of cadmium chalcogenide thin layers allow the development of good quality thin layers through the application of low temperature conditions. The layers of chalcogenides of metals of I-II B groups on the substrate of an amphiphilic polyamide 6 (PA 6) were successfully obtained by the wet chemical method of adsorption-diffusion technology [17][18][19][20][21]. Very similar to this method the successive ionic layer adsorption and reaction (SILAR) one of the wet chemical methods is widely used to form these layers on a glass substrate [22][23][24].…”

“…The selection of suitable precursors and their studies illustrate, how chalcogens' compounds could be used in the electroactive materials. The preparation of chalcogen layers using chalcopolythionic acids, such as monoselenopentathionic H2SeS4O6 and monotelluropentathionic H2TeS4O6, has caught the attention of researchers [20,25,26]. These precursors are more beneficial than conventional sources due to their higher stability.…”

Structural and Optical Characterizations of Cadmium Chalcogenide Layers on Polyamide Formed Using Monotelluropentathionic Acid

“…Only chemical methods used in the formation process of cadmium chalcogenide thin layers allow the development of good quality thin layers through the application of low temperature conditions. Layers of chalcogenides of metals of the I-II B groups on the substrate of an amphiphilic polyamide 6 (PA 6) were successfully obtained by the wet chemical method of adsorption-diffusion technology [17][18][19][20][21]. Very similar to this method, the successive ionic layer adsorption and reaction (SILAR) technique of the wet chemical methods is widely used to form these layers on a glass substrate [22][23][24].…”

“…The selection of suitable precursors and their studies illustrate how chalcogens' compounds could be used in electroactive materials. The preparation of chalcogen layers using chalcopolythionic acids, such as monoselenopentathionic H 2 SeS 4 O 6 and monotelluropentathionic H 2 TeS 4 O 6 , has caught the attention of researchers [20,25,26]. These precursors are more beneficial than conventional sources due to their higher stability.…”