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Thematische Bibliographien / Oxysulphides / Zeitschriftenartikel

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Zeitschriftenartikel zum Thema „Oxysulphides“

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Veröffentlicht am 25. Mai 2024

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1

Benoist, L., D. Gonbeau, G. Pfister-Guillouzo, E. Schmidt, G. Meunier und A. Levasseur. „XPS analysis of lithium intercalation in thin films of molybdenum oxysulphides“. Surface and Interface Analysis 22, Nr. 1-12 (Juli 1994): 206–10. http://dx.doi.org/10.1002/sia.740220146.

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2

Grajcar, A., M. Różański, M. Kamińska und B. Grzegorczyk. „Study on Non-Metallic Inclusions in Laser-Welded TRIP-Aided Nb-Microalloyed Steel“. Archives of Metallurgy and Materials 59, Nr. 3 (28.10.2014): 1163–69. http://dx.doi.org/10.2478/amm-2014-0203.

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Abstract The work concerns the studies on non-metallic inclusions occuring in laser-welded Si-Al TRIP steel containing Nb and Ti microadditions. Laser welding tests of 2 mm thick thermomechanically rolled sheets were carried out using keyhole welding and a solid-state laser. The results of laser welding in the air atmosphere for the heat input value of 0.048 kJ/mm are included. The distribution, type and chemical composition of non-metallic inclusions formed in the base metal, heat-affected zone, and fusion zone are analysed in detail. It was found that the base metal contains rare, fine oxysulphides. Their chemical composition was modified by rare earth elements. Numerous oxide inclusions of a various size and a chemical composition occur in the fusion zone. The dependence between a size of particles and their chemical composition was observed. A microstructure of steel was assessed using light microscopy and scanning electron microscopy techniques.

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3

Grajcar, A., B. Grzegorczyk und A. Kozłowska. „Corrosion Resistance and Pitting Behaviour of Low-Carbon High-Mn Steels in Chloride Solution“. Archives of Metallurgy and Materials 61, Nr. 2 (01.06.2016): 825–32. http://dx.doi.org/10.1515/amm-2016-0139.

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Abstract Corrosion resistance of the X4MnSiAlNbTi27-4-2 and X6MnSiAlNbTi26-3-3 type austenitic steels, after hot deformation as well as after cold rolling, were evaluated in 3.5% NaCl solution using potentiodynamic polarization tests. A type of nonmetallic inclusions and their pitting corrosion behaviour were investigated. Additionally, the effect of cold deformation on the corrosion resistance of high-Mn steels was studied. The SEM micrographs revealed that corrosion damage formed in both investigated steels is characterized by various shapes and an irregular distribution at the metallic matrix, independently on the steel state (thermomechanically treated or cold worked). Corrosion pits are generated both in grain interiors, grain boundaries and along the deformation bands. Moreover, corrosion damage is stronger in cold deformed steels in comparison to the thermomechanically treated specimens. EDS analysis revealed that corrosion pits preferentially nucleated on MnS and AlN inclusions or complex oxysulphides. The morphology of corrosion damage in 3.5% NaCl supports the data registered in potentiodynamic tests.

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4

Grajcar, A., D. Woźniak und A. Kozłowska. „Non-Metallic Inclusions and Hot-Working Behaviour of Advanced High-Strength Medium-Mn Steels“. Archives of Metallurgy and Materials 61, Nr. 2 (01.06.2016): 811–20. http://dx.doi.org/10.1515/amm-2016-0137.

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AbstractThe work addresses the production of medium-Mn steels with an increased Al content. The special attention is focused on the identification of non-metallic inclusions and their modification using rare earth elements. The conditions of the thermomechanical treatment using the metallurgical Gleeble simulator and the semi-industrial hot rolling line were designed for steels containing 3 and 5% Mn. Hot-working conditions and controlled cooling strategies with the isothermal holding of steel at 400°C were selected. The effect of Mn content on the hot-working behaviour and microstructure of steel was addressed. The force-energetic parameters of hot rolling were determined. The identification of structural constituents was performed using light microscopy and scanning electron microscopy methods. The addition of rare earth elements led to the total modification of non-metallic inclusions, i.e., they replaced Mn and Al forming complex oxysulphides. The Mn content in a range between 3 and 5% does not affect the inclusion type and the hot-working behaviour. In contrast, it was found that Mn has a significant effect on a microstructure.

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5

Gamanyuk, S. B., M. V. Kirilichev und G. V. Babin. „Investigation of Formation Features of Sulphide Inclusions and their Distribution inside the Grain Depending upon the Conditions of Steel 20 Deoxidation“. Materials Science Forum 945 (Februar 2019): 592–97. http://dx.doi.org/10.4028/www.scientific.net/msf.945.592.

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The paper reports laboratory test findings on the impact of steel oxidation level on distribution features of non-metallic inclusions in low-alloyed structural steels. An analysis of the effect of various oxidation methods of steel on the distribution and formation of non-metallic inclusions is made. The results reveal a relation between the amount of sulphide and oxisulphide inclusions formed and steel oxidation level. The release of oxisulphide from the melt is accompanied with a decrease in the amount of both oxygen and sulphur. After oxygen content has achieved an equilibrium value, only “pure” sulphides are formed, which may deteriorate steel plastic properties. Thus, sulphides start precipitating only when oxygen content in the melt falls to a very low value. An increase in the amount of oxysulphides is accompanied with a decrease in sulphur concentration in the melt which reduces sulphide phase concentration at grain boundaries and stabilizes plastic properties. Thus the negative effect of sulphur can be reduced not only by decreasing its content in steel through expensive secondary steelmaking methods but also by controling the amount, shape and types of oxide, sulphide and oxisulphide inclusions in steel.

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6

Kucha, Henryk, und Johann G. Raith. „Gold-oxysulphides in copper deposits of the Greywacke Zone, Austria: A mineral chemical and infrared fluid inclusion study“. Ore Geology Reviews 35, Nr. 1 (März 2009): 87–100. http://dx.doi.org/10.1016/j.oregeorev.2008.10.004.

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7

Almohaimeed, Ziyad M., Shumaila Karamat, Rizwan Akram, Saira Sarwar, Asad Javaid und Ahmet Oral. „An Effective Route for the Growth of Multilayer MoS2 by Combining Chemical Vapor Deposition and Wet Chemistry“. Advances in Condensed Matter Physics 2022 (09.02.2022): 1–7. http://dx.doi.org/10.1155/2022/3233252.

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Molybdenum disulfide (MoS2) is an actively pursuing material of the 2D family due to its semiconducting characteristics, making it a potential candidate for nano and optoelectronics application. MoS2 growth from molybdenum and sulphur precursors by chemical vapor depositions (CVD) is used widely, but molybdates’ conversion into MoS2 via CVD is overlooked previously. Direct growth of MoS2 on the desired pattern not only reduces the interfacial defects but also reduces the complexities in device fabrication. In this work, we combine the wet synthesis and chemical vapor deposition method where sodium molybdate and L-cysteine are used to make a solution. With the dip coating, the mixture is coated on the substrates, and then, chemical vapor deposition is used to convert the chemicals into MoS2. Raman spectroscopy revealed the presence of oxysulphides (peaks number value) other than A 1 g and E 2 g 1 , where heat treatment was performed in the presence of Ar gas flow only. On the other hand, the films reducing in the presence of sulphur and argon gas promote only A 1 g and E 2 g 1 peaks of MoS2, which confirms complete transformation. XRD diffraction showed a very small change in the diffraction peaks and value of strain, whereas SEM imaging showed the flakes formation for MoS2 samples which were heated in the presence of sulphur. X-ray photoelectron spectroscopy is also performed for the chemical composition and to understand the valence state of Mo, S, and O and other species.

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8

Schleid, Thomas, und Falk Lissner. „M10S14O-type oxysulphides (M  La, Ce, Pr, Nd, Sm) as an “oxygen trap” in oxidation reactions of reduced lanthanide chlorides with sulphur“. Journal of the Less Common Metals 175, Nr. 2 (Oktober 1991): 309–19. http://dx.doi.org/10.1016/0022-5088(91)90017-x.

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9

Kalasina, Saran, Ketsuda Kongsawatvoragul, Nutthaphon Phattharasupakun, Phitchayapha Phattharaphuti und Montree Sawangphruk. „Cobalt oxysulphide/hydroxide nanosheets with dual properties based on electrochromism and a charge storage mechanism“. RSC Advances 10, Nr. 24 (2020): 14154–60. http://dx.doi.org/10.1039/d0ra01714k.

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10

Messaddeq, S. H., I. Schripachev, S. J. L. Ribeiro und Y. Messaddeq. „Photoexpansion and photorefraction in oxysulphide glasses“. Solid State Ionics 180, Nr. 32-35 (26.11.2009): 1491–96. http://dx.doi.org/10.1016/j.ssi.2009.09.011.

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11

Barnier, S., M. Palazzi, M. Guittard und C. Julien. „Vibrational studies of the oxysulphide (LaO)4GaS4.5“. Journal of Materials Science 28, Nr. 14 (01.01.1993): 3761–63. http://dx.doi.org/10.1007/bf00353175.

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12

Zan, Ling, Jiashen Zhong und Qirong Luo. „New oxysulphide glasses from the Sb2O3–Sb2S3·MxS system“. Journal of Non-Crystalline Solids 256-257 (Oktober 1999): 396–99. http://dx.doi.org/10.1016/s0022-3093(99)00473-1.

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13

Abdel-Kader, A., und M. M. Elkholy. „Cathodoluminescence emission spectra of trivalent europium-doped yttrium oxysulphide“. Journal of Materials Science 27, Nr. 11 (1992): 2887–95. http://dx.doi.org/10.1007/bf01154096.

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14

CHANGMING, F., G. HAICHUN, H. YAN, C. ZENGLIANG und Z. YI. „Oxysulphide glasses-a new kind of lithium ion conductors“. Solid State Ionics 48, Nr. 3-4 (November 1991): 289–93. http://dx.doi.org/10.1016/0167-2738(91)90045-d.

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15

Amoretti, G., A. Blaise, R. Caciuffo, J. M. Fournier, J. Larroque und R. Osborn. „A neutron spectroscopy study of magnetic excitations in uranium oxysulphide“. Journal of Physics: Condensed Matter 1, Nr. 33 (21.08.1989): 5711–20. http://dx.doi.org/10.1088/0953-8984/1/33/014.

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16

Ma, Jianxin, Ming Fang und Ngai Ting Lau. „The catalytic reduction of SO2 by CO over lanthanum oxysulphide“. Applied Catalysis A: General 150, Nr. 2 (März 1997): 253–68. http://dx.doi.org/10.1016/s0926-860x(96)00312-2.

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17

Karna, Sunil K., Chin-Wei Wang, Chun-Ming Wu, Chien-Kang Hsu, Daniel Hsu, Chih-Jen Wang, Wen-Hsien Li, Raman Sankar und Fang-Cheng Chou. „Spin, charge and lattice couplings in Cu-deficient oxysulphide BiOCu0.94S“. Journal of Physics: Condensed Matter 24, Nr. 26 (07.06.2012): 266004. http://dx.doi.org/10.1088/0953-8984/24/26/266004.

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18

Salak, Andrei N., Oleg V. Ignatenko, Aliaksandr L. Zhaludkevich, Aleksey D. Lisenkov, Maksim Starykevich, Mikhail L. Zheludkevich und Mário G. S. Ferreira. „High-pressure zinc oxysulphide phases in the ZnO-ZnS system“. physica status solidi (a) 212, Nr. 4 (20.01.2015): 791–95. http://dx.doi.org/10.1002/pssa.201431820.

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19

Kukli, K., M. Peussa, L. S. Johansson, E. Nykänen und L. Niinistö. „Controlled Growth of Yttrium Oxysulphide Thin Films by Atomic Layer Deposition“. Materials Science Forum 315-317 (Juli 1999): 216–21. http://dx.doi.org/10.4028/www.scientific.net/msf.315-317.216.

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20

Giakoumakis, G. E., C. D. Nomicos, E. N. Yiakoumakis und E. K. Evangelou. „Absolute efficiency of rare earth oxysulphide screens in reflection mode observation“. Physics in Medicine and Biology 35, Nr. 7 (01.07.1990): 1017–23. http://dx.doi.org/10.1088/0031-9155/35/7/015.

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21

Makhloufi, Rachid, Ahmed Boutarfaia und Marcel Poulain. „New oxysulphide glasses in Sb2S3–MmOn and Sb2S3–Sb2O3–MmOn systems“. Journal of Alloys and Compounds 398, Nr. 1-2 (August 2005): 249–55. http://dx.doi.org/10.1016/j.jallcom.2005.02.013.

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22

HAYASHI, Shoji, und Yoshiaki IGUCHI. „Activities of Components in Iron oxysulphide Melt in Equilibrium with Solid Iron“. Tetsu-to-Hagane 74, Nr. 4 (1988): 656–63. http://dx.doi.org/10.2355/tetsutohagane1955.74.4_656.

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23

Gamon, Jacinthe, Arnaud J. Perez, Leanne A. H. Jones, Marco Zanella, Luke M. Daniels, Rhun E. Morris, Chiu C. Tang et al. „Na2Fe2OS2, a new earth abundant oxysulphide cathode material for Na-ion batteries“. Journal of Materials Chemistry A 8, Nr. 39 (2020): 20553–69. http://dx.doi.org/10.1039/d0ta07966a.

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24

Martin-Litas, I., P. Vinatier, A. Levasseur, J. C. Dupin und D. Gonbeau. „Electrochemical properties of tungsten oxysulphide thin films as positive electrodes for lithium microbatteries“. Bulletin of Materials Science 26, Nr. 7 (Dezember 2003): 673–81. http://dx.doi.org/10.1007/bf02706762.

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25

Alsalme, Ali, Malak Faisal Altowairqi, Afnan Abdullah Alhamed und Rais Ahmad Khan. „Optimization of Photovoltaic Performance of Pb-Free Perovskite Solar Cells via Numerical Simulation“. Molecules 28, Nr. 1 (27.12.2022): 224. http://dx.doi.org/10.3390/molecules28010224.

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Recently, the simulation of perovskite solar cells (PSCs) via SCAPS-1D has been widely reported. In this study, we adopted SCAPS-1D as a simulation tool for the numerical simulation of lead-free (Pb-free) PSCs. We used methyl ammonium germanium iodide (MAGeI3) as a light absorber, zinc oxysulphide (ZnOS) as an electron transport layer (ETL), and spiro-OMeTAD as a hole transport layer. Further, the thickness of the ZnOS, MAGeI3, and spiro-OMeTAD layers was optimized. The optimal thicknesses of the ZnOS, MAGeI3, and spiro-OMeTAD layers were found to be 100 nm, 550 nm, and 100 nm, respectively. The optimized MAGeI3-based PSCs exhibited excellent power conversion efficiency (PCE) of 21.62%, fill factor (FF) of 84.05%, and Jsc of 14.51 mA/cm2. A fantastic open circuit voltage of 1.77 V was also obtained using SCAPS-1D. We believe that these theoretically optimized parameters and conditions may help improve the experimental efficiency of MAGeI3-based PSCs in the future.

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26

Olofinjana, B., G. O. Egharevba, M. A. Eleruja, C. Jeynes, A. V. Adedeji, O. O. Akinwunmi, B. A. Taleatu, C. U. Mordi und E. O. B. Ajayi. „Synthesis and Some Properties of Metal Organic Chemical Vapour Deposited Molybdenum Oxysulphide Thin Films“. Journal of Materials Science & Technology 26, Nr. 6 (Juni 2010): 552–57. http://dx.doi.org/10.1016/s1005-0302(10)60084-9.

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27

McColl, Kit, und Furio Corà. „Fast lithium-ion conductivity in the ‘empty-perovskite’ n = 2 Ruddlesden–Popper-type oxysulphide Y2Ti2S2O5“. Journal of Materials Chemistry A 9, Nr. 11 (2021): 7068–84. http://dx.doi.org/10.1039/d0ta11358a.

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Lithium ions reside on a square network of sites in empty ReO₃-like units within the Li-ion anode material Y₂Ti₂S₂O₅ and move with activation barriers of only 64 meV under dilute conditions, providing fast 2D mobility.

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28

Parvathavarthini, N., Ram Kishor Gupta, A. Vinod Kumar, S. Ramya und U. Kamachi Mudali. „Interpretation of Electrochemical Potentiokinetic Reactivation data in the presence of sulphide/oxysulphide inclusions in 316LN stainless steel“. Corrosion Science 53, Nr. 10 (Oktober 2011): 3202–14. http://dx.doi.org/10.1016/j.corsci.2011.05.065.

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29

Sabbah, Hussein, Jack Arayro und Rabih Mezher. „Simulation and Investigation of 26% Efficient and Robust Inverted Planar Perovskite Solar Cells Based on GA0.2FA0.78SnI3-1%EDAI2 Films“. Nanomaterials 12, Nr. 21 (03.11.2022): 3885. http://dx.doi.org/10.3390/nano12213885.

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A hybrid tin-based perovskite solar cell with p-i-n inverted structure is modeled and simulated using SCAPS. The inverted structure is composed of PEDOT:PSS (as hole transport layer—HTL)/GA0.2FA0.78SnI3-1% EDAI2 (as perovskite absorber layer)/C60-fullerene (as electron transport layer—ETL). Previous experimental studies showed that unlike conventional tin-based perovskite solar cells (PSC), the present hybrid tin-based PSC passes all harsh standard tests and generates a power conversion efficiency of only 8.3%. Despite the high stability that this material exhibits, emphasis on enhancing its power conversion efficiency (PCE) is crucial. To that end, various ETL and HTL materials have been rigorously investigated. The impact of energy level alignment between HTL/absorber and absorber/ETL interfaces have been elucidated. Moreover, the thickness and the doping concentration of all the previously mentioned layers have been varied to inspect their effect on the photovoltaic performance of the PSC. The optimized structure with CuI (copper iodide) as HTL and ZnOS (zinc oxysulphide) as ETL scored a PCE of 26%, which is more than three times greater than the efficiency of the initial structure. The current numerical simulation on GA0.2FA0.78SnI3-1% EDAI2 could greatly increase its chance for commercial development.

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Chakradhar, R. P. S., Bharathibai J. Basu und R. V. Lakshmi. „Effect of particle size and dopant concentration on photophysical properties of Eu3+-doped rare earth oxysulphide phosphor coatings“. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 78, Nr. 2 (Februar 2011): 783–87. http://dx.doi.org/10.1016/j.saa.2010.12.018.

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31

Darby, M. S. B., R. E. Simpson, T. C. May-Smith, D. W. Hewak und R. W. Eason. „Influence of deposition parameters on composition and refractive index of femtosecond and nanosecond pulsed laser deposited gallium lanthanum oxysulphide“. Journal of Non-Crystalline Solids 354, Nr. 40-41 (Oktober 2008): 4582–88. http://dx.doi.org/10.1016/j.jnoncrysol.2008.06.005.

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32

Popovici, Elisabeth-Jeanne, Laura Muresan, Amalia Hristea-Simoc, Emil Indrea, Marilena Vasilescu, Mihail Nazarov und Duk Young Jeon. „Synthesis and characterisation of rare earth oxysulphide phosphors. I. Studies on the preparation of Gd2O2S:Tb phosphor by the flux method“. Optical Materials 27, Nr. 3 (Dezember 2004): 559–65. http://dx.doi.org/10.1016/j.optmat.2004.07.006.

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33

Arayro, Jack, Rabih Mezher und Hussein Sabbah. „Comparative Simulation Study of the Performance of Conventional and Inverted Hybrid Tin-Based Perovskite Solar Cells“. Coatings 13, Nr. 7 (17.07.2023): 1258. http://dx.doi.org/10.3390/coatings13071258.

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A hybrid tin-based (GA0.2FA0.78SnI3-1% EDAI2) perovskite solar cell (PSC) with a p-i-n inverted structure has been reported to pass all the rigorous standard tests successfully and achieve a certified power conversion efficiency (PCE) of 8.3%. Our previous numerical study showed that this PCE could be considerably increased to 24.1% by engineering and controlling the interfaces of the cell. The aim of the current study is to compare the performance of a conventional n-i-p structure with its inverted p-i-n analog quantitatively, and demonstrate that, by improving the conventional structure, it can achieve a PCE score approximately equal to the inverted p-i-n structure. To that end, the absorber layer was chosen to be GA0.2FA0.78SnI3-1% EDAI2, while four ETL (electron transport layer) materials (TiO2, WS2, SnO2, and ZnOS), and four HTL (hole transport layer) materials (PEDOT:PSS, Cu2O, CuSCN, and CuI) were considered. Most used ETL/HTL combinations have been rigorously investigated with the aim of finding the ultimate configuration, providing the highest photovoltaic properties. Additionally, the effect of the layers’ thicknesses and their doping concentrations were inspected, and their impact on the photovoltaic properties of the PSC was investigated. The optimized structure with CuI (copper iodide) as the HTL and ZnOS (zinc oxysulphide) as the ETL scored a PCE of 24.1%, which is comparable to the value found with the inverted structure (26%). The current numerical simulation on GA0.2FA0.78SnI3-1% EDAI2 could be considered as a milestone in its chances for commercial development.

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Wuille Bille, Brian Alan, und Jesús M. Velázquez. „From Ln₂O₂S to Ln₁₀OS₁₄: Exploring the sulphur spectrum of trivalent lanthanoid oxysulphides“. Dalton Transactions, 2024. http://dx.doi.org/10.1039/d4dt00294f.

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While Ln2O2S oxysulphides have increasingly gained attention for their structural and optoelectronic properties, an expansive compositional space lies beyond as the sulphur-to-oxygen ratio increases. In these oxysulphides, the compounded effect...

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35

Sun, Li, Xuan-Wei Lei, Yu Zhang und Chao-Bin Lai. „Solubility products of rare earth oxysulphides in liquid iron“. Canadian Metallurgical Quarterly, 05.06.2023, 1–13. http://dx.doi.org/10.1080/00084433.2023.2219954.

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36

Hou, Keren, Bingguo Liu, Zhonghua Zhou, Chao Yuwen, Siyu Gong, Jianping Liu, Yunfei An, Wang Chen, Bangjian Wu und Zihu Liu. „Phase Transformation Analysis and Process Optimisation of Low-Grade Lead–Zinc Oxysulphide Ore Carbothermal Reduction“. New Journal of Chemistry, 2023. http://dx.doi.org/10.1039/d3nj01779f.

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The continuous exploitation of zinc blend resources leads to primary resources may not be sufficient for future requirements. The abundant low-grade lead–zinc oxysulphide ore will become a crucial source of...

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37

Khalil, Mohammed H., Raghad Y. Mohammed und Mohammed A. Ibrahem. „INFLUENCE OF ANNEALING TEMPERATURE ON ZINC OXYSULPHIDE THIN FILMS PROPERTIES DEPOSITED BY THERMAL SPRAY TECHNIQUE“. Science Journal of University of Zakho 11, Nr. 4 (28.12.2023). http://dx.doi.org/10.25271/sjuoz.2023.11.4.1192.

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This article studies the effects of annealing temperatures on the stoichiometry, structure, and optical characteristics of Zinc Oxysulphide thin films deposited on glass substrates using the thermal spray method. The annealing was done in the air under a temperature of 150 ºC, 250 ºC and 350 ºC. Field Emission Scanning Electron Microscopy (FESEM), X-ray diffractometry (XRD), and a UV-Vis Spectrophotometer were utilized to examine the thin films' morphological, structure, and optical characteristics as grown and annealed samples. It has been observed that the film thickness decreases as the annealing temperature increases. The XRD pattern demonstrates that as-prepared and annealed samples at 250C, and 350C are amorphous, while film annealed at 150 C is crystalline with the hexagonal phase and orientated along (110) plane. FESEM image of the as-prepared Zinc Oxysulphide thin films shows flower-like sheet nanostructures. However, for the annealed samples, the FESEM images show cone-like with a combination of sheets and aggregate nanoparticles. EDX analysis reveals the presence of Zn, O as well as sulfur. The transmittance of the film decreases from 63% to 37% and the band gap energy reduces slightly from 3.99 to 3.92 eV as the annealing temperature increase.

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„Synthesis and Luminescence Properties of La2O2S:RE3+ (RE3+ = Ce3+, Dy3+, Eu3+ and Tb3+) Submicron Size Phosphors for Lamp Industry“. International Journal of Innovative Technology and Exploring Engineering 9, Nr. 4 (10.02.2020): 1898–907. http://dx.doi.org/10.35940/ijitee.d1657.019420.

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RE3+(RE3+ = Ce3+, Dy3+, Eu3+ and Tb3+) doped La2O2S phosphors was synthesized by solid state flux fusion method and their down conversion spectral properties were studied as a function different RE3+ concentrations and reported in this paper. The solid state flux fusion results in well crystallized hexagonal shaped phosphor particles. The samples were characterized by XRD, SEM, FT-IR photoluminescence (PL) and CIE colour co-ordinates techniques. The lanthanum oxysulphide (La2O2S) phosphor doped with Ce3+ shows broad band emission with peak at 390 nm and 415 nm when excited at 340 nm excitation. La2O2S:Dy3+ shows efficient blue and yellow band emissions at 480 nm and 572 nm. La2O2S:Eu3+ phosphor shows an orange and red emission at 590 nm and 615 nm. Whereas La2O2S:Tb3+ phosphor shows weak blue emission at 488 nm and strong green 545 nm. The excitation spectra used for the La2O2S:RE3+ (where RE3+ = Ce3+, Dy3+, Eu3+ and Tb3+) phosphors is in the near UV region extending from 350 to 400 nm, which is characteristics of near UV excited LED. The effect of the RE3+ (RE3+= Ce3+, Dy3+ , Eu3+ and Tb3+) concentration on the luminescence properties of La2O2S:RE3+ phosphors were also studied. The investigated prepared La2O2S phosphors may be suitable for a near UV excited W-LED. Keywords: Oxysulphide, SEM, FT-IR, PL, SSL, CIE.

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Kataria, Vanjula, und Dalip Singh Mehta. „Multispectral harvesting rare-earth oxysulphide based highly efficient transparent luminescent solar concentrator“. Journal of Rare Earths, Oktober 2020. http://dx.doi.org/10.1016/j.jre.2020.09.021.

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40

Iqbal, Naseer, Ibrahim Khan, Asghar Ali und Ahsanullhaq Qurashi. „A sustainable molybdenum oxysulphide-cobalt phosphate photocatalyst for effectual solar-driven water splitting“. Journal of Advanced Research, August 2021. http://dx.doi.org/10.1016/j.jare.2021.08.006.

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41

Dhara, Soumen, S. R. Mohapatra und Ravi K. Biroju. „Fast UV photoresponse from Aluminum doped zinc oxysulphide composite nanowires by efficient charge-exchange interactions“. Journal of Luminescence, Juli 2022, 119138. http://dx.doi.org/10.1016/j.jlumin.2022.119138.

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42

Woulfe, P., F. J. Sullivan, L. Byrne, A. J. Doyle, W. Kam, M. Martyn und S. O’Keeffe. „Optical fibre based real-time measurements during an LDR prostate brachytherapy implant simulation: using a 3D printed anthropomorphic phantom“. Scientific Reports 11, Nr. 1 (27.05.2021). http://dx.doi.org/10.1038/s41598-021-90880-6.

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AbstractAn optical fibre sensor based on radioluminescence, using the scintillation material terbium doped gadolinium oxysulphide (Gd2O2S:Tb) is evaluated, using a 3D printed anthropomorphic phantom for applications in low dose-rate (LDR) prostate brachytherapy. The scintillation material is embedded in a 700 µm diameter cavity within a 1 mm plastic optical fibre that is fixed within a brachytherapy needle. The high spatial resolution dosimeter is used to measure the dose contribution from Iodine-125 (I-125) seeds. Initially, the effects of sterilisation on the sensors (1) repeatability, (2) response as a function of angle, and (3) response as a function of distance, are evaluated in a custom polymethyl methacrylate phantom. Results obtained in this study demonstrate that the output response of the sensor, pre- and post-sterilisation are within the acceptable measurement uncertainty ranging from a maximum standard deviation of 4.7% pre and 5.5% post respectively, indicating that the low temperature sterilisation process does not damage the sensor or reduce performance. Subsequently, an LDR brachytherapy plan reconstructed using the VariSeed treatment planning system, in an anthropomorphic 3D printed training phantom, was used to assess the suitability of the sensor for applications in LDR brachytherapy. This phantom was printed based on patient anatomy, with the volume and dimensions of the prostate designed to represent that of the patient. I-125 brachytherapy seeds, with an average activity of 0.410 mCi, were implanted into the prostate phantom under trans-rectal ultrasound guidance; following the same techniques as employed in clinical practice by an experienced radiation oncologist. This work has demonstrated that this sensor is capable of accurately identifying when radioactive I-125 sources are introduced into the prostate via a brachytherapy needle.

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Brlec, Katarina, Kieran B. Spooner, Jonathan Skelton und David O. Scanlon. „Y₂Ti₂O₅S₂ -- a promising n-type oxysulphide for thermoelectric applications“. Journal of Materials Chemistry A, 2022. http://dx.doi.org/10.1039/d2ta04160j.

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Thermoelectric materials offer an unambiguous solution to the ever-increasing global demand for energy by harnessing the Seebeck effect to convert waste heat to electrical energy. Mixed-anion materials are ideal candidate...

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