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G. Hao^*, J. Y. Shen, Y. L. Sun, K. Xu, Y. F. Wang
Chalcogenide Letters, Vol.21, No.10, pp. 765-770, 2024, DOI:10.15251/CL.2024.2110.765
Abstract In the present work, flower-like Cu₂SrSnS₄ (CSTS) sample is successfully prepared by solvothermal method. The XRD and Raman analysis confirm that pure CSTS phase with trigonal structure is obtained. The band gap of as-obtained CSTS naocrystals is estimated to be 1.49eV. The removal of methylene blue (MB) within 100min under simulated solar light irradiation is around 90%, depicting that CSTS is a potential material for effective solar light photocatalytic application. Meanwhile, The Seebeck coefficient and electrical conductivity of CSTS material can reach to 128.57μV•K^-1 and 20.35S·m^-1 at 675K, respectively, indicating its potential for thermoelectric application. More >

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R. N. Mondal^a,b,*, S. Sahab¹
Chalcogenide Letters, Vol.21, No.10, pp. 771-783, 2024, DOI:10.15251/CL.2024.2110.771
Abstract Cu₂ZnSnS₄ nanocrystals (CZTS NCs), MoS₂ nanosheet (NS) and MoS₂-CZTS nanocomposite (NC) have been synthesized using solvothermal route. Structural characterization of samples have been done by XRD, Raman spectroscopy, HR-TEM. Samples have optically characterized by UV-Vis absorption, photoluminescence (PL) and time co-related single photon counting (TCSPC) study. The XRD, HR-TEM and Raman spectroscopy established tetragonal kesterite phase for both CZTS NCs and MoS2-CZTS NC. Enhancement of efficiency of CZTS NCs to degrade methylene blue (MB) dye, illuminated by visible light, have been observed by loading 1 wt.% MoS₂ NS and found to be ~100% in only 15 minutes. More >

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Y. L. Hou^*, L. Z Bai
Chalcogenide Letters, Vol.21, No.10, pp. 785-796, 2024, DOI:10.15251/CL.2024.2110.785
Abstract This study investigated the development of a novel composite modified asphalt incorporating PDA-MoS₂ into styrene-butadiene-styrene (SBS) modified asphalt. The successful synthesis of PDA-MoS₂ was confirmed through various characterization techniques. The incorporation of PDA-MoS₂ into SBS modified asphalt resulted in significant improvements in performance properties. With a PDA-MoS₂ content of 0.7 wt%, the modified asphalt showed a notable 15.1% rise in softening point and a 24% drop in penetration in comparison to the control SBS modified asphalt. Dynamic Shear Rheometer tests revealed a 2.4-fold increase in the rutting factor at 60°C. Multiple Stress Creep Recovery tests demonstrated enhanced… More >

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G. M. Liu^a, G. Hu^b, P. Tang^c, L. L. Wu^a,d,*, X. Hao^a,d, G. G. Zeng^a, W. W. Wang^a, J. Q. Zhang^a,d
Chalcogenide Letters, Vol.21, No.10, pp. 797-808, 2024, DOI:10.15251/CL.2024.2110.797
Abstract V-doped CdTe polycrystalline films can achieve both doping activation and defect passivation by high-temperature CdCl₂ heat treatment, but this requires simultaneous modulation of the amount of CdCl₂ introduced to obtain high-quality films. It is found that increasing the CdCl₂ introduction does not change the physical phase structure and lattice constant of CdTe:As thin films, but promotes grain recrystallisation, and can promote the formation of A-center, and inhibit the formation of Cd vacancy (VCd) defects, as well as the formation of deep energy level defects. The results provide guidance for the improvement of high-temperature CdCl₂ heat treatment of More >

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K. Sudha^a, B. Shenbagabalakrishnan^b, T. Chitravel^a,*, T. P. Kumar^b,+
Chalcogenide Letters, Vol.21, No.10, pp. 809-818, 2024, DOI:10.15251/CL.2024.2110.809
Abstract Copper Zinc Cadmium Sulfide (Cu₂ZnCdS₄) semiconducting material compound synthesized using a new economic beneficial route. Copper sulfate, zinc sulfate, cadmium sulfate and thiourea salt solutions were utilized for Cu₂ZnCdS₄ compound formation. Basic characteristics like pH value, electrical conductivity, concentration measurements were investigated for several hundred samples. Optics transmittance was investigated by UV – Vis spectrophotometer within the 350 to 950 nm range. Photo luminescence measurement was examined by using photo–fluorometer. Optic properties of Cu₂ZnCdS₄ compound were investigated through photo-calorimeter measurements including mixed wavelength bands. The real time investigated noteworthy results from several hundred samples are presented and More >

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M. S. Tivanov^b,, T. M. Razykov^a, K. M. Kuchkarov^a,b,, A. N. Olimov^a, R. R. Khurramov^a, D. Z. Isakov^a, Z. A. Makhmudov^a, M. Pirimmetov^a, A. Nasirov^c, D. S. Bayko^b, O. V. Korolik^b
Chalcogenide Letters, Vol.21, No.10, pp. 819-828, 2024, DOI:10.15251/CL.2024.2110.819
Abstract Using the thermal evaporation method, thin crystalline films of Sb₂(S_xSe_1-x)₃ are produced at the substrate temperature of 300℃. The mixed powders of the Sb₂S₃ and Sb₂Se₃ is used as a source material. The influence of the S/Se component ratio on the morphology and structural characteristics of Sb₂(S_xSe_1-x)₃ thin films is investigated. As demonstrated by the results of X-ray energy dispersive spectroscopy, the formed films of Sb₂(S_xSe_1-x)₃ have a components ratio close to the stoichiometry. Besides, Morphological and structural analyses reveal significant differences in the surface morphology of Sb₂(S_xSe_1-x)₃ thin film absorbers, indicating that the properties of the films More >

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L. M. Pu^a,*, S. G. Pei^a, X. H. Tang^a, Z. F. Yin^b, H. J. Hou^b, H. L. Guo^c
Chalcogenide Letters, Vol.21, No.10, pp. 829-839, 2024, DOI:10.15251/CL.2024.2110.829
Abstract Recently, there has been a suggestion that Cu₂BaSnS₄ could be a promising candidate for a photovoltaic absorber with a wide band gap. The study primarily examined the structural, along with the mechanical and thermodynamic characteristics of Cu2BaSnS4. In addition, a study was performed to examine the presentation and representation of three-dimensional (3D) characteristics related to linear compressibility, shear modulus, and Young's modulus. The investigation into thermodynamic characteristics was calculated and analyzed. More >

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M. Sudha^a,*, A. B. Madhan^b, M. Revathi^c
Chalcogenide Letters, Vol.21, No.10, pp. 841-845, 2024, DOI:10.15251/CL.2024.2110.841
Abstract Zinc sulfide thin films were prepared using the economical spray pyrolysis process. A thin film of exceptional quality with a temperature difference of 300 °C to 400 °C is produced by optimizing variables such as concentration, flow rate, and nozzle to substrate distance. These films' optical characteristics and structure were examined. The deposited thin films displayed a direct and allowed transition, as indicated by the optical transmittance spectra. XRD analysis confirmed that the deposited thin films were polycrystalline with a cubic phase. This film can be used in solar cell applications since the band gap More >

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