Pulsed laser deposition from ZnS and Cu2SnS3 multicomponent targets

Ettlinger, Rebecca Bolt; Cazzaniga, Andrea Carlo; Canulescu, Stela; Pryds, Nini; Schou, Jørgen

doi:10.1016/j.apsusc.2014.12.165

Cited by 44 publications

(15 citation statements)

References 26 publications

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“…The observation was related to the possible vaporization of small drops during film growth. Droplets with dimensions ranging from hundreds of nanometers up to one micron have been observed on surfaces films synthesized by pulsed laser deposition route [39]. The observed grain size is higher than crystallite size calculated from XRD results using Scherrer equation.…”

Section: Morphological Propertiesmentioning

confidence: 96%

Effect of drying temperature on the structural and optical characteristics of Cu2SnS3 thin films synthesized by simple spin coating technique

Rabaoui

Dahman

Dekhil

et al. 2015

J Mater Sci: Mater Electron

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Thin films of Cu 2 SnS 3 (CTS) were successfully prepared, by sol-gel spin coating technique on glass substrates. In this work, the effect of drying temperature on structural, morphological and optical characteristics is investigated. The X-ray diffraction patterns of the samples proved the polycrystalline nature and the formation of pure tetragonal Cu 2 SnS 3 structure with (112) preferential orientation. The AFM and SEM images revealed that the CTS films have continuous and dense morphology. The average crystallite sizes calculated using the Debye-Scherrer formula increased from 3 to 6 nm and the direct optical band gap increased from 1.10 to 1.34 eV with increasing drying temperature from 150 to 300°C. We found that by increasing the drying temperature, the sheet resistance decreased from 500 to 320 X. This makes the material as a good candidate for low cost and friendly environment thin film solar cells.

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Section: Morphological Propertiesmentioning

confidence: 96%

Effect of drying temperature on the structural and optical characteristics of Cu2SnS3 thin films synthesized by simple spin coating technique

Rabaoui

Dahman

Dekhil

et al. 2015

J Mater Sci: Mater Electron

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“…Thin CTS films have been made using several techniques, spin coating [21][22][23][24], pulsed laser deposition from Cu 2 SnS 3 mulitcomponent targets [25]; doctor blade method [26] nano ink [27]; spray pyrolysis [28,30]; direct liquid coating [31,32]; sulfurizing Cu/Sn stacked precursors deposited on glass substrates by electron beam & H. Dahman h_dahman_2000@yahoo.com evaporation [33], sulfurizing, (Cu, Sn)S structured precursors prepared by successive ionic layer absorption and reaction (SILAR) [34,35]; annealing in sulphur atmosphere electrodeposited metals [18,36]; heat treatment of electrodeposited SnS-Cu layers [37], sulfurization of DC magnetron sputtered Sn-Cu stacks [38][39][40][41], direct evaporation of a synthesized Cu 2 SnS 3 powder [42], three steps method based on sulfurization of evaporated copper on sprayed SnS 2 film [43], sulfurization of a stack of vacuum-evaporated Cu and Sn films [44][45][46] route earlier used by Rezig and Dahman to prepare thin films of iron pyrite [47,48]. In this study, pure cubic structure Cu 2 SnS 3 films were grown by simple one-step spin coating technique from a single precursor's solution of Cu-Sn-thiourea complex.…”

Section: Introductionmentioning

confidence: 99%

Cu2SnS3 thin films deposited by spin coating route: a promise candidate for low cost, safe and flexible solar cells

Dahman

Mır

2015

J Mater Sci: Mater Electron

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Thin films of Cu 2 SnS 3 (CTS) was successfully grown on glass substrates by sol-gel spin coating technique. In this work, the effect of drying time on structural, morphological and optical characteristics is investigated while drying temperature was kept at 300°C. The samples were characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), UV-Vis-NIR spectroscopy and four probe analysis. The XRD patterns of the samples proved the polycrystalline nature and the formation of pure cubic Cu 2 SnS 3 structure with (111) preferential orientation. No peak referring to other binary or ternary phases were detected in the patterns. The average crystallite sizes calculated using the DebyeScherrer formula was about 7.5 nm. The AFM and SEM images revealed that the CTS films have continuous and dense morphology. The films roughness increases from 8 to 68 nm with increasing drying time from 2 to 10 min. The thin films absorption coefficients were in the range 0.66 9 10 5 -1.38 9 10 5 cm -1 at 2.14 eV. We found that by increasing the drying time, the sheet resistance increased from 22 to 574 kX and the direct optical band gap increased from 1.19 to 1.65 eV. The synthesised material seems to be a good candidate for flexible, cheap and friendly environment solar cells applications.

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“…The highest efficiency of CTS solar cells of 4.65 % was achieved by thermal evaporation [7]. CTS thin films have also, more recently, been fabricated by pulsed laser deposition (PLD) [8]. Vanalakar et al [9] have reported on the first CTS solar cell prepared by pulsed laser deposition with an efficiency of 0.82%.…”

Section: Introductionmentioning

confidence: 99%

“…The presence of droplets (in some papers called particulates) in the growing films is a well-known problem, which can be addressed in a number of ways [11]. Particularly, droplets up to 1 micron in diameter or larger were observed in the films of CTS deposited by PLD [8,9]. The influence of droplets on the overall efficiency of the solar cell is not well understood, but it is clear that it can be detrimental for the cell performance for the following reasons: i) the droplet size can be larger than the overall thickness of the absorber layer, resulting in a rough interface and possible shunt paths between the CTS film and subsequent solar cell layers [12]; and ii) the droplets can have a different composition than the matrix of the CTS film [13,14], resulting in non-homogeneity in composition and therefore different charge carrier transport properties.…”

Section: Introductionmentioning

confidence: 99%

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Formation of copper tin sulfide films by pulsed laser deposition at 248 and 355 nm

et al. 2016

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The influence of the laser wavelength on the deposition of copper tin sulfide (CTS) and SnS-rich CTS with a 248-nm KrF excimer laser (pulse length τ=20 ns) and a 355-nm frequency-tripled Nd:YAG laser (τ=6 ns) was investigated. A comparative study of the two UV wavelengths shows that the film growth rate per pulse of CTS was three to four times lower with the 248 nm laser than the 355 nm laser. SnSrich CTS is more efficiently ablated than pure CTS. Films deposited at high fluence have sub-micron and micrometer size droplets, and their size and area density do not vary significantly from 248 to 355 nm deposition. Irradiation at low fluence resulted in a non-stoichiometric material transfer with significant Cu-deficiency in the as-deposited films. We discuss the transition from a non-stoichiometric material transfer at low fluence to a nearly stoichiometric ablation at high fluence based on a transition from a dominant evaporation regime to an ablation regime.

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Pulsed laser deposition from ZnS and Cu2SnS3 multicomponent targets

Cited by 44 publications

References 26 publications

Effect of drying temperature on the structural and optical characteristics of Cu2SnS3 thin films synthesized by simple spin coating technique

Effect of drying temperature on the structural and optical characteristics of Cu2SnS3 thin films synthesized by simple spin coating technique

Cu2SnS3 thin films deposited by spin coating route: a promise candidate for low cost, safe and flexible solar cells

Formation of copper tin sulfide films by pulsed laser deposition at 248 and 355 nm

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