Optical properties and solar selectivity of flash-evaporated copper sulphide films

Gadgil, S.B.; Thangaraj, R.; Agnihotri, O.P.

doi:10.1016/0040-6090(86)90368-8

Cited by 8 publications

(3 citation statements)

References 3 publications

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“…A change in the phase structure was observed for the sample sulfurized for 25 min, for which all the peaks in the XRD pattern could be indexed as the monoclinic roxbyite Cu 7 S 4 phase (JCPDS file 23-0958) [16]. The sample sulfurized for 35 min exhibited a further change in the phase structure; all the peaks in the XRD pattern could be indexed as the hexagonal covellite CuS phase (JCPDS file 06-0464) [17]. Thus, the XRD results indicated the formation of various copper sulfide phases depending on the sulfurization time of the initial Cu film.…”

Section: Methodsmentioning

confidence: 87%

Structural studies of copper sulfide films: effect of ambient atmosphere

Kundu

Hasegawa

Terabe

et al. 2008

Science and Technology of Advanced Materials

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We examined the structural properties of copper sulfide films as a function of the sulfurization time of 70-nm-thick Cu films. Copper sulfide films with various phases such as mixed metallic Cu-chalcocite, chalcocite, roxbyite, and covellite phases were formed with increasing sulfurization time. To evaluate the structural stability of various films, all the films were exposed to the ambient atmosphere for the same amount of time. Although the phase structure and stoichiometry of the films were maintained at a greater depth, the near-surface region of the films was oxidized and covered with overlayers of oxide, hydroxide, and/or sulfate species due to the exposure and reaction with the ambient atmosphere. The oxygen uptake and its reactivity with the copper sulfide film surfaces were enhanced with increasing sulfur content of the films. In addition, the type of divalent state of copper formed on the film surfaces depended on the phase structure, composition, and stoichiometry of the films.

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Section: Methodsmentioning

confidence: 87%

Structural studies of copper sulfide films: effect of ambient atmosphere

Kundu

Hasegawa

Terabe

et al. 2008

Science and Technology of Advanced Materials

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“…Copper sulfides occur in a variety of compositions and morphologies [1] and are of interest for their applications in solar cells, electroconducting electrodes, optical filters, superionic materials and chemical sensors [2][3][4][5][6][7]. Various nanoparticles (plates, tubes, wires, spheres and architectures) of these binary compounds have been prepared by several techniques, e.g.…”

Section: Introductionmentioning

confidence: 99%

Room-temperature sulfidation of copper nanoparticles with sulfur yielding covellite nanoparticles

Urbanová

Kupčı́k

Bezdička

et al. 2012

Comptes Rendus. Chimie

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Room-temperature sulfidation of 100 nm-sized copper nanoparticles with powderous elemental sulfur in chloroform results in fast formation of irregular nanostructured CuS (covellite) particles containing nanoplates. These were characterized by Raman and UV-Vis spectroscopy, X-ray diffraction and scanning and transmission electron microscopy. The reaction is judged to occur via breakdown of the Cu nanoparticles by reactively interacting sulfur solutes and via growth of the CuS nanobodies involving interdiffusion and redox reaction of S and Cu atoms.

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“…Copper sulfide is widely used as a semiconductor device material, especially for optoelectronics and photovoltaics, and several thin film processes have already been established (Yoshikawa et al, 1980;Rastogi and Salkalachen, 1982;Iborra et al, 1987). In general, large-area copper sulfide layers for terrestrial solar cells were prepared by chemical methods such as spray pyrolysis (Gadgil et al, 1987; Orban de Xivry et al, 1987), electrochemical deposition (Garcia-Camarero et al, 1986; Engelken and McCloud, 1985, and chemical bath deposition (Pramanik et al, 1987;Fatas et al, 1985). However, the yields of the target sulfide thin films still remain low in such chemical processes with respect to the precursor material fed amounts.…”

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confidence: 99%