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Chalcogenide Letters最新文献

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Synthesis, structure and properties of PbO–PbF2–B2O3–SiO2 glasses pbo - pb_2 - b2o3 - sio2玻璃的合成、结构与性能
IF 1 4区 材料科学
Chalcogenide Letters Pub Date : 2022-12-21 DOI: 10.15251/cl.2022.1912.891
Y. Hordieiev, A. Zaichuk
{"title":"Synthesis, structure and properties of PbO–PbF2–B2O3–SiO2 glasses","authors":"Y. Hordieiev, A. Zaichuk","doi":"10.15251/cl.2022.1912.891","DOIUrl":"https://doi.org/10.15251/cl.2022.1912.891","url":null,"abstract":"The structure, thermal and some physical properties of lead fluoroborate glasses containing 30 mol% SiO2 have been investigated by differential thermal analysis, X-ray diffraction and Fourier-transform infrared spectroscopy. The glasses were prepared by the conventional melt-quenching method. Fourier-transform infrared spectroscopy results showed that the network of these glasses consists mainly of BO3, BO4, SiO4, and PbO4 structural units. The thermal stability of the glass samples determined by differential thermal analysis was found to be about 80°C. Dilatometric measurements showed that the glass transition temperature and dilatometric softening temperature decrease with increasing lead content, whereas the coefficient of thermal expansion increases. The density and molar volume increased with the increase in lead content. The conductivity of the investigated glasses mainly depends on the mobility of F– and Pb2+ ions. The variation in volume resistance upon changing the composition has been correlated with the structural changes in the glass network. The results obtained in this study indicate that the investigated glasses can be potential candidates for advanced technologies as solder and sealing materials.","PeriodicalId":9710,"journal":{"name":"Chalcogenide Letters","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41313390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Multicomponent Ge-As-Te-Pb chalcogenide glasses for radiations shielding applications 辐射屏蔽应用的多组分Ge-As-Te-Pb硫族化物玻璃
IF 1 4区 材料科学
Chalcogenide Letters Pub Date : 2022-12-21 DOI: 10.15251/cl.2022.1912.939
M. Ezzeldien, M. A. Salamab, M. Hasaneen, A. A. El-Maaref, M. M. Soraya, N. Shaalan, Z. Alrowaili, M. Ahmad
{"title":"Multicomponent Ge-As-Te-Pb chalcogenide glasses for radiations shielding applications","authors":"M. Ezzeldien, M. A. Salamab, M. Hasaneen, A. A. El-Maaref, M. M. Soraya, N. Shaalan, Z. Alrowaili, M. Ahmad","doi":"10.15251/cl.2022.1912.939","DOIUrl":"https://doi.org/10.15251/cl.2022.1912.939","url":null,"abstract":"Phy-X/PSD online program is used to obtain various radiation shielding indices in a photon energy region located between 0.15 and 15 MeV for Ge25-As10-Te65-x-Pbx (x = 2, 4, 6, 8, 10 at %) chalcogenide glasses. The linear attenuation coefficient LAC, mass attenuation coefficients MAC, effective atomic number Zeff, effective electron density Neff, half-value layer, HVL, tenth value layer TVL, mean free path MEF, energy absorption and exposure buildup factors (EABF, EBF), and fast neutron cross section FNRCS have been introduced. The findings conclude that the LAC and MAC measurements are greater and therefore better than commercial and traditional glasses. Also, it was found that HVL, TVL, and MFP were reduced with the addition of Pb to the tested glasses, which improve the shielding characteristics. Zeff and Neff of the compositions under study were varied as (42.58- 59.75) and (2.36-3.09 x 1023 electrons/g) respectively. A reduction was noticed in EBF and EABF values with the increment of Pb concentration in the investigated glasses at the entire photon energies, at all values of MFP that emphasize the enhancement of shielding properties of these glasses with the addition of lead. FNRCS were found to be changed between 0.87 and 0.095 Cm-1 as Pb content varies from 0.0 to 0.01 respectively that let these glasses","PeriodicalId":9710,"journal":{"name":"Chalcogenide Letters","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41318335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis and electrocatalytic performance for hydrogen evolution reaction of ReSe2 nanosheets ReSe2纳米片的合成及其对析氢反应的电催化性能
IF 1 4区 材料科学
Chalcogenide Letters Pub Date : 2022-12-21 DOI: 10.15251/cl.2022.1912.965
X. Y. Zhang, J. Liu, Y. He, Z. Liu, A. Wei
{"title":"Synthesis and electrocatalytic performance for hydrogen evolution reaction of ReSe2 nanosheets","authors":"X. Y. Zhang, J. Liu, Y. He, Z. Liu, A. Wei","doi":"10.15251/cl.2022.1912.965","DOIUrl":"https://doi.org/10.15251/cl.2022.1912.965","url":null,"abstract":"Two-dimensional ReSe2 as catalyst for hydrogen evolution reaction (HER) has attracted attention due to its unique 1T′ structure and anisotropic physical properties in base planes. In this work, ReSe2 nanosheets were directly prepared on a carbon cloth (CC) substrate by hydrothermal synthesis technology. The reaction solution was prepared using ammonium perrhenium (NH4ReO4), sodium borohydride (NaBH4), selenium (Se) powder and deionized water. The effects of reactant concentrations and reaction time on the catalytic properties of the ReSe2 /CC for HER were researched. When the concentration of NH4ReO4, Se and NaBH4 is 0.05 M, 0.065 M and 0.200 M, ReSe2/CC shows the optimal HER catalytic properties with overpotential of 197 mV at current density of 10mAcm-2 , Tafel slope of 142 mVdec-1 and ECSA of 325cm2 . The formation mechanism and working mechanism in the HER process of ReSe2/CC are discussed.","PeriodicalId":9710,"journal":{"name":"Chalcogenide Letters","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46307783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of Ce and Sm doping on optoelectronic and thermoelectric properties of Bi2Te3 alloy Ce和Sm掺杂对Bi2Te3合金光电和热电性能的影响
IF 1 4区 材料科学
Chalcogenide Letters Pub Date : 2022-12-21 DOI: 10.15251/cl.2022.1912.871
M. Jawad, S. Selvaraju, Muhammad Umair Javed, F. Ali, Q. Rafiq, I. Ur Rahman, B. Masood, M. Hussain, S. Azam, H. Elhosiny Ali
{"title":"Effect of Ce and Sm doping on optoelectronic and thermoelectric properties of Bi2Te3 alloy","authors":"M. Jawad, S. Selvaraju, Muhammad Umair Javed, F. Ali, Q. Rafiq, I. Ur Rahman, B. Masood, M. Hussain, S. Azam, H. Elhosiny Ali","doi":"10.15251/cl.2022.1912.871","DOIUrl":"https://doi.org/10.15251/cl.2022.1912.871","url":null,"abstract":"Metallic materials attracted much attention in the field of optoelectronics for several applications such as infrared radiation detection. In present study, electronic, optical and thermoelectric spectra of Sm and Ce co doped Bi2Te3 materials have been studied using density functional theory (DFT) calculations. Electronic study of the studied material indicates metallic and good optical and thermoelectric properties. Optical spectra of the doped Bi2Te3 show that absorption lies in visible and near UV region of the radiation. Thus, it seems to have potential applications in optoelectronics. Thermoelectric properties favor the semiconducting nature with high Seebeck coefficient and dominant character of p-type charge carriers.","PeriodicalId":9710,"journal":{"name":"Chalcogenide Letters","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45885275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Improved frictional properties of WS2/TiO2 composite layer in situ prepared on TC4 alloy TC4合金上原位制备的WS2/TiO2复合层摩擦性能的改善
IF 1 4区 材料科学
Chalcogenide Letters Pub Date : 2022-12-21 DOI: 10.15251/cl.2022.1912.955
G. Gu, J. Shang, X. Zhang
{"title":"Improved frictional properties of WS2/TiO2 composite layer in situ prepared on TC4 alloy","authors":"G. Gu, J. Shang, X. Zhang","doi":"10.15251/cl.2022.1912.955","DOIUrl":"https://doi.org/10.15251/cl.2022.1912.955","url":null,"abstract":"WS2/TiO2 composite layer was successfully in situ prepared by plasma electrolytic oxidation method adding Na2S and Na2WO4 into electrolyte. The structure, morphology and frictional properties of the composite layer were investigated by X-ray diffraction, scanning electron microscopy, and 3D confocal microscopy. It was found that the WS2/TiO2 composite layer is denser and has a lower friction coefficient when the adding concentration is 10–20 g/L. The WS2/TiO2 composite layer in situ prepared by plasma electrolytic oxidation is a new method to improve the trilogical hehavior of TC4 alloy.","PeriodicalId":9710,"journal":{"name":"Chalcogenide Letters","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48991058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Studies on optical and electrical properties of PVA capped nanocrystalline CdSe thin film prepared by chemical bath deposition method 化学浴沉积法制备聚乙烯醇盖顶纳米晶CdSe薄膜的光学和电学性能研究
IF 1 4区 材料科学
Chalcogenide Letters Pub Date : 2022-12-21 DOI: 10.15251/cl.2022.1912.901
S. R. Devi, P. Saikia, M. Hussain
{"title":"Studies on optical and electrical properties of PVA capped nanocrystalline CdSe thin film prepared by chemical bath deposition method","authors":"S. R. Devi, P. Saikia, M. Hussain","doi":"10.15251/cl.2022.1912.901","DOIUrl":"https://doi.org/10.15251/cl.2022.1912.901","url":null,"abstract":"PVA-capped nanocrystalline CdSe thin films are deposited on chemically clean glass substrates by chemical bath deposition technique using Cadmium acetate [Cd(CH3COO)2.3H2O and Sodium Selenosulfate (Na2SeSO3) as Cd2+ and Se2- ions sources respectively. Polyvinyl Alcohol (PVA) is act as a capping agent. Films of five different molarities (0.1 M–0.50M) of same pH value 8 were prepared at room temperature 298 K. The characteristics of the prepared CdSe thin films are investigated in detail by measuring their optical and electrical properties. The band gap energy of 2.16–2.49 eV was determined from the optical absorption spectra. The optical band gap decrease with increase in molarities. The electrical conductivity measured using two co-planar Aluminium electrodes are found to increase with increase in temperature showing semiconducting nature of the films. The electrical conductivity at room temperature is found to be of the order of 10-4 Ω-1 cm-1 .","PeriodicalId":9710,"journal":{"name":"Chalcogenide Letters","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47125501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electronic structure, elastic and thermodynamic properties of SnS from theoretical study 从理论研究SnS的电子结构、弹性和热力学性质
IF 1 4区 材料科学
Chalcogenide Letters Pub Date : 2022-12-21 DOI: 10.15251/cl.2022.1912.927
H. Hou, W. X. Chen, S. R. Zhang, X. W. Lu, L. Xie
{"title":"Electronic structure, elastic and thermodynamic properties of SnS from theoretical study","authors":"H. Hou, W. X. Chen, S. R. Zhang, X. W. Lu, L. Xie","doi":"10.15251/cl.2022.1912.927","DOIUrl":"https://doi.org/10.15251/cl.2022.1912.927","url":null,"abstract":"In this work, first-principles methods based on density functional theory are used to study the structural, electronic and elastic properties of rock-salt SnS in detail. Thermodynamic properties of SnS under high temperature and high pressure were studied by using the quasi-harmonic Debye model. The results show that the optimized structural parameters are in good agreement with the experimental and other theoretical values. The band structure and density of states of SnS are obtained by calculation and analysis. Based on the quasi-harmonic Debye method, the pressure and temperature dependencies of the equilibrium volume, the bulk modulus, the Debye temperature and so on are obtained.","PeriodicalId":9710,"journal":{"name":"Chalcogenide Letters","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46201025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of γ-quanta on TlInSe2 crystal electrical properties γ-量子对TlInSe2晶体电学性质的影响
IF 1 4区 材料科学
Chalcogenide Letters Pub Date : 2022-12-21 DOI: 10.15251/cl.2022.1912.885
M. Jafarov, N. Verdiyeva
{"title":"Influence of γ-quanta on TlInSe2 crystal electrical properties","authors":"M. Jafarov, N. Verdiyeva","doi":"10.15251/cl.2022.1912.885","DOIUrl":"https://doi.org/10.15251/cl.2022.1912.885","url":null,"abstract":"The influence of γ-quanta on the current flow in TlInSe2 single crystals and the process of filling and emptying localized levels in crystals has been experimentally studied. Investigations show that the current -voltage characteristics (CVC) of TlInSe2 single crystals obey Lampert theory and are determined by currents limited by the space charge. It is shown that the defects occurring from γ-quanta in TlInSe2 single crystals result from radiation processes","PeriodicalId":9710,"journal":{"name":"Chalcogenide Letters","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48324266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
NiCo2S4 nano composite structure with high electrochemical performance in band gap 具有高带隙电化学性能的NiCo2S4纳米复合结构
IF 1 4区 材料科学
Chalcogenide Letters Pub Date : 2022-11-30 DOI: 10.15251/cl.2022.1911.847
V. Latha, K. Sambathkumar, N. Rajkamal, M. Venkatachalapthy
{"title":"NiCo2S4 nano composite structure with high electrochemical performance in band gap","authors":"V. Latha, K. Sambathkumar, N. Rajkamal, M. Venkatachalapthy","doi":"10.15251/cl.2022.1911.847","DOIUrl":"https://doi.org/10.15251/cl.2022.1911.847","url":null,"abstract":"Synthesize NiCo2S4 and its application to find out electrochemical performance of anionic reaction in nano chemistry. Because of binary transition metal sulfide NiCo2S4 are prepared by using a Chemical precipitation to find out anionic movement within the compound. But the electrochemical were used as a conductive network for the NiCo2S4 hexagonal nano plates. Hence hexagonal nano plates have an average crystalline size of the particles 38.34nm and 20.06nm. Nickel and cobalt sulfides with various stoichiometries have been synthesized from Ni(CH3COO)2.2H2O, CoCl2.6H2O with different sulfur precursors using as a direct method. The morphological composite were characterized by (scanning electron microscopy) SEM, XRD (X-ray diffraction), EDX, UV-visible, FTIR spectrum and optical band-gap energy were evaluated. Optical band-gap energies in the range 4.7 eV−5.1 eV were observed.","PeriodicalId":9710,"journal":{"name":"Chalcogenide Letters","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41672138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Structural analysis of As-S-Sb-Te polycrystalline nanostructured semiconductors As-S-Sb-Te多晶纳米结构半导体结构分析
IF 1 4区 材料科学
Chalcogenide Letters Pub Date : 2022-11-30 DOI: 10.15251/cl.2022.1911.841
O. Iaseniuc, M. Iovu, S. Rosoiu, M. Bardeanu, Laura-Bianca Enache, G. Mihai, O. Bordianu, V. Verlan, I. Culeac, I. Cojocaru, M. Enăchescu
{"title":"Structural analysis of As-S-Sb-Te polycrystalline nanostructured semiconductors","authors":"O. Iaseniuc, M. Iovu, S. Rosoiu, M. Bardeanu, Laura-Bianca Enache, G. Mihai, O. Bordianu, V. Verlan, I. Culeac, I. Cojocaru, M. Enăchescu","doi":"10.15251/cl.2022.1911.841","DOIUrl":"https://doi.org/10.15251/cl.2022.1911.841","url":null,"abstract":"The aim of this paper is to characterize the polycrystalline and vitreous phases in the As2S3-Sb2S3-Sb2Te3 systems using several techniques such as XRD, SEM, EDS, and micro-Raman spectroscopy. The As1.17S2.7Sb0.83Te0.40, As1.04S2.4Sb0.96Te0.60, As0.63S2.7Sb1.37Te0.30, and As0.56S2.4Sb1.44Te0.60 semiconductor chalcogenide bulk glasses were examined using Scanning Electron microscopy (SEM), Energy-Dispersive Spectroscopy (EDS), X-Ray diffraction (XRD) and micro-Raman analysis. The EDS quantitative and mapping analysis showed that for each investigated area, the identified elements were sulfur (S), arsenic (As), antimony (Sb) and tellurium (Te). These elements are present in constant atomic percentages on the entire sample, showing a good homogeneity of the samples. The study of samples by the above-mentioned methods showed the presence of crystalline phases and amorphous phases with the polycrystalline inclusions corresponding to the structural units AsS3, Sb2S3, and Sb2Те3.","PeriodicalId":9710,"journal":{"name":"Chalcogenide Letters","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43091344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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