Solid State Sciences最新文献

{"title":"Insights on the electrooxidation of formaldehyde over bimetallic Co2V2O7 nanorod and its implication towards water electrolysis","authors":"S. Ashoka ,&nbsp;H.M. Akshaya ,&nbsp;M. Shirisha ,&nbsp;N.S. Venkataramanan ,&nbsp;K. Yogesh ,&nbsp;Narayana Sanaga ,&nbsp;R.T. Yogeeshwari","doi":"10.1016/j.solidstatesciences.2025.107903","DOIUrl":"10.1016/j.solidstatesciences.2025.107903","url":null,"abstract":"<div><div>Potential electrocatalytic system based on monoclinic Co₂V₂O₇ nanorods (Co₂V₂O₇ NRs) is proposed to realize formaldehyde (H₂CO) assisted green hydrogen production at ultra-low overpotential in an alkaline electrolyte. The mechanistic knowledge of H₂CO assisted hydrogen production over Co₂V₂O₇ NR surface is gained by the combination of experimental and density functional theory. The computational studies confirm that the Co₂V₂O₇ surface exhibit highest adsorption energy of −0.185 eV towards H₂CO oxidation compared to V₂O₅ (−0.144 eV) and Co₃O₄ (−0.108 eV). The Co₂V₂O₇ NRs renders kinetically more favorable surface for selective oxidation of H₂CO (SOF) compared to its counterparts Co₃O₄ and V₂O₅. The SOF over Co₂V₂O₇ NR surface results in green hydrogen at ultra-low overpotential and high-valued low-cost chemical formic acid. The Co₂V₂O₇ NRs exhibit an ultra-low onset potential of 1.26 V vs RHE towards FOR in three electrode configuration while Co₂V₂O₇ NRs || Co₂V₂O₇ cell needs a low cell potential of only 1.48 V at 10 mA cm⁻² in H₂CO assisted hydrogen production. The proposed research opens a new way to treat H₂CO contaminated water with simultaneous production of green hydrogen.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"163 ","pages":"Article 107903"},"PeriodicalIF":3.4,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermoelectric properties of Zn/Sc codoped GeTe prepared by melt-spinning method","authors":"Lin Cheng ,&nbsp;Hongxia Liu ,&nbsp;Lu Gao ,&nbsp;Lijun Zhai ,&nbsp;Junsong He ,&nbsp;Zhongyuan Yang ,&nbsp;Minghao Lv ,&nbsp;Yan Zhang ,&nbsp;Zhigang Sun","doi":"10.1016/j.solidstatesciences.2025.107904","DOIUrl":"10.1016/j.solidstatesciences.2025.107904","url":null,"abstract":"<div><div>GeTe thermoelectrics have received widespread attention due to their excellent thermoelectric performance. In this paper, GeTe samples are prepared by a melt spinning process combined with hot-pressing. The samples have a lower carrier concentration compared to those prepared by the traditional melting method, and the enhanced grain boundary scattering leads to a reduction in thermal conductivity. Zn doping is found to increase the density of states effective mass, leading to an enhanced Seebeck coefficient while maintaining a high mobility. The intensified phonon scattering of point defects and stacking faults in Ge_1-<em>x</em>Zn_<em>x</em>Te samples leads to significantly reduced lattice thermal conductivity, with a minimum value of only ∼0.51 Wm⁻¹K⁻¹ at 775 K. The Ge_0.98Zn_0.02Te sample achieves a maximum <em>zT</em>∼1.4 at 775 K. The further introduced Sc not only enhances the phonon scattering from multi-scale microstructures to reduce the lattice thermal conductivity, resulting in the lowest value of ∼0.29 Wm⁻¹K⁻¹, but also improves the Vickers hardness, which is about 43 % higher than the Zn doped samples. This work demonstrates the Zn and Sc co-doped GeTe samples as excellent thermoelectric materials for practical applications.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"163 ","pages":"Article 107904"},"PeriodicalIF":3.4,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143637325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anchoring of liquid crystal molecules on multi-walled carbon nanotubes and their effects on enhanced photoluminescence dynamics, fluorescence decay and distinctive electrical properties","authors":"Nidhi Manhas ,&nbsp;Lalita S. Kumar ,&nbsp;Pankaj Kumar ,&nbsp;Vandna Sharma ,&nbsp;Rajeev S. Joshi ,&nbsp;Rangappa Keri ,&nbsp;A.K. Swetha ,&nbsp;Vinayak Adimule","doi":"10.1016/j.solidstatesciences.2025.107905","DOIUrl":"10.1016/j.solidstatesciences.2025.107905","url":null,"abstract":"<div><div>In the present work, self-organized non-polar liquid crystalline (LC) molecules (3b, 3c) were anchored by multi-walled carbon nanotubes (MWCNTs) to enhance optical and electrical properties. The 3b, 3c@MWCNTs LC-intercalated systems (IS) exhibited co-axial distribution of MWCNTs with orderly arrangement showing well-aligned interference colors with banded patterns in the textures, as observed using a polarizing optical microscope. Steady state photoluminescence studies unveiled sharp emission peaks around blue, yellow and red bands, and a broad emission peaks around violet band for 3b, 3c@MWCNTs LC-IS. Further, the Stoke's shifts were observed larger indicating that LC-IS can be used for display applications with high contrast ratio. Fluorescence decay studies demonstrated that average lifetime (τ) was in the range of 0.200ns–0.089ns and 0.087–0.139ns for 3b@MWCNTs and 3c@MWCNTs LC-IS, respectively and were lower than pure 3b, 3c LCs. Due to which it influenced the faster recombination of the excited photons, enabling effective charge transfer rates, and aid in the attainment of quantum equilibrium states quickly in the LC matrix. Furthermore, capacitance-voltage measurements of 3b@MWCNTs LC-IS showed quasi-static complete alignment at 42 °C and 3.2V, however, stable at 10V with relative dielectric permittivity of 0.023. The polarization studies confirmed asymmetric nature of 3b@MWCNTs LC-IS, showing saturation value of 41.8 μC/cm² with remnant polarization of 21.4 μC/cm². PFUND studies evidenced that polarization of 3b@MWCNTs LC-IS followed the rate of pulse and the delay at 40 °C and 42 °C with 2V of bias voltage. In contrast, 3c@MWCNTs LC-IS mild reorientation was seen at 2.4V and 7V with breakdown at 10V and polarization didn't follow rate of pulse and delay at any applied voltages. From the reported research work a new pathway has been opened for further exploration of electro-optical properties of various LC molecules, and can serve as a reference to improve electrical and optical properties of LC-IS systems for advanced display applications.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"163 ","pages":"Article 107905"},"PeriodicalIF":3.4,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phase formation under hydrothermal conditions and thermodynamics properties in the GdPO4-YPO4 system","authors":"M.O. Enikeeva ,&nbsp;O.V. Proskurina ,&nbsp;S.I. Lopatin ,&nbsp;V.V. Gusarov","doi":"10.1016/j.solidstatesciences.2025.107899","DOIUrl":"10.1016/j.solidstatesciences.2025.107899","url":null,"abstract":"<div><div>Phase formation in the GdPO₄-YPO₄ system has been studied. The samples were synthesized under hydrothermal conditions at a temperature of 503 K and a pressure of approximately 10 MPa for 28 days of isothermal holding. The results of thermal treatment of the obtained samples at 1473 and 1673 K and the results of thermal treatment of GdPO₄ at 1873 K are presented. It is shown that in the system, solid solutions Gd_1-<em>x</em>Y_<em>x</em>PO₄ are formed based on phases with monoclinic structure GdPO₄ and xenotime structure YPO₄. The range of existence of two solid solutions at temperatures 503–1473 K lies in the range of compositions from <em>x</em>≈0.20 to <em>x</em>≈0.40. At a temperature of 1673 K, the formation of a phase with anhydrite structure is observed at <em>x</em>≈0.26, and the beginning of transformation of GdPO₄ from monoclinic to xenotime structure. Using Knudsen effusion mass spectrometry (KEMS), the qualitative and quantitative composition of the vapor over the (1-<em>x</em>)GdPO₄-<em>x</em>YPO₄ system has been determined, which consists of a mixture of PO, PO₂, and O₂. The enthalpy value of the vaporization reaction and the standard formation enthalpies for the GdPO₄ and YPO₄, as well as the activity of P₄O₁₀ in the condensed phase of the (1-<em>x</em>)GdPO₄-<em>x</em>YPO₄ system, were determined in the temperature range 1650–1850 K.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"163 ","pages":"Article 107899"},"PeriodicalIF":3.4,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Scintillation properties of Eu3+ doped Lu3Al5O12 single crystals","authors":"Toshiaki Kunikata ,&nbsp;Kenichi Watanabe ,&nbsp;Hiromi Kimura ,&nbsp;Kai Okazaki ,&nbsp;Takumi Kato ,&nbsp;Daisuke Nakauchi ,&nbsp;Noriaki Kawaguchi ,&nbsp;Takayuki Yanagida","doi":"10.1016/j.solidstatesciences.2025.107902","DOIUrl":"10.1016/j.solidstatesciences.2025.107902","url":null,"abstract":"<div><div>Lutetium aluminum garnet single crystals doped with different concentrations of Eu (0.5, 1.0, 5.0, 10.0, 15.0 %) were grown using the floating zone method, and their optical and scintillation properties were investigated. Several sharp peaks due to 4f-4f transitions of Eu³⁺ ions were observed at 580–710 nm in photoluminescence (PL) and scintillation spectra, and the PL and scintillation decay times were estimated to be 2.9–3.8 ms. We measured the pulse height spectra under γ-ray irradiation from ¹³⁷Cs (662 keV) using the setup for scintillators with slow decay times, and the light yields of the samples were estimated. The 5.0 % Eu-doped lutetium aluminum garnet sample showed the highest light yield of 30,000 photons/MeV among the samples.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"163 ","pages":"Article 107902"},"PeriodicalIF":3.4,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143611595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization of (HfTiZrTaM)B2 (M=Mn/Mo/W/Cr) high entropy diboride ceramics with five/six components prepared via powder metallurgy","authors":"İlayda Süzer ,&nbsp;Esin Aysel ,&nbsp;Kübra Gürcan Bayrak ,&nbsp;Sıddıka Mertdinç-Ülküseven ,&nbsp;Duygu Ağaoğulları","doi":"10.1016/j.solidstatesciences.2025.107898","DOIUrl":"10.1016/j.solidstatesciences.2025.107898","url":null,"abstract":"<div><div>This study shows the possibility of synthesizing five/six constituent high entropy (HfTiZrTaM)B₂ (M=Mn/Mo/W/Cr) diboride ceramics via mechanical alloying (MA) assisted spark plasma sintering (SPS). Firstly, metal borides as starting materials were synthesized in-house via mechanochemical synthesis (MCS) and leaching using optimum conditions. Secondly, metal borides were mixed in equimolar ratios to consist of five or six components, and then MA was used to hybridize the mixture for 6 h. SPS (2000 °C, 30 MPa) was used to convert the hybridized powders into densified structures. The compositional, microstructural, physical, mechanical and thermal analyses were conducted. Based on the results, the main HEB phase and low amount of (Hf, Zr) oxides were detected. Also, there was a secondary phase in the (HfTiZrTaCrW)B₂ composition. Approximately 8.19 g/cm³ and 6.72 g/cm³ were found as the highest and the lowest Archimedes’ densities for the (HfTiZrTaCrW)B₂ and (HfTiZrTaCrMo)B₂ samples, respectively. (HfTiZrTaCrMn)B₂ had the lowest hardness value nearly 22 GPa, and (HfTiZrTaCrW)B₂ had the highest hardness value at about 24 GPa. (HfTiZrTaCrW)B₂ had the highest wear rate (∼6.85x10⁻⁶ mm³/Nm), and (HfTiZrTaCrMo)B₂ had the lowest wear rate (∼5.95x10⁻⁷ mm³/Nm). Based on the thermal tests, the highest weight gain up to 1100 °C was found for the (HfTiZrTaCrMn)B₂ sample</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"163 ","pages":"Article 107898"},"PeriodicalIF":3.4,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Production of high capacity porous nickel borides via novel molten salt electrolysis","authors":"Mehtap Arslan-Kaba,&nbsp;Servet Timur,&nbsp;Guldem Kartal Sireli","doi":"10.1016/j.solidstatesciences.2025.107889","DOIUrl":"10.1016/j.solidstatesciences.2025.107889","url":null,"abstract":"<div><div>This work focused on producing Ni-boride powders via the novel boron diffusion method called CRTD-Bor (cathodic reduction and thermal diffusion-based boriding) and their electrochemical examinations. The nickel specimens with mesh geometry were borided through the whole cross-section at 1000 °C and 200 mA/cm² for 2 h and held inside of the molten electrolyte for 1 h of phase homogenization. After the boriding treatment, the fully boron diffused specimens were ground via a ball mill and cold-pressed. The structural characterizations of the Ni-boride powders were carried out by using X-ray diffractometry (XRD), scanning electron microscopy (SEM). The results demonstrated that the powders were composed of NiB, Ni₄B₃, Ni₂B, and Ni₃B, where Ni₄B₃ was dominant. To examine the electrochemical behaviors of produced electrodes, cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD) techniques were performed through the standard three-electrode system. The CV experiment was conducted within the potential range of 0–0.45 V, over 2000 cycles at 200 mV/s. While a 76 % increase in areal capacitance (Ca) was detected until the 1000th cycle, this value remained constant afterward. Ca was calculated as 1500 mF/cm² at 10 mV/s. At different scan rate experiments, the b value was found as 0.65, representing the system was under mixed control, namely both capacitive and faradaic. The charge/discharge behavior was investigated via GCD at different current densities (0.1–0.01 A/cm²). According to data obtained from GCD, the energy and power density values were calculated as 57.5 mWh/cm² and 3450 mW/cm² at 0.01 A/cm², respectively.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"163 ","pages":"Article 107889"},"PeriodicalIF":3.4,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143561740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"G-C3N4-based multi-metal oxide nanocomposites: A new frontier in catalytic performance","authors":"Tayaba Tahseen ,&nbsp;Nosheen Farooq ,&nbsp;Wardah Iman ,&nbsp;Ayesha Hareem ,&nbsp;Ravia Irshad ,&nbsp;Talib K. Ibrahim ,&nbsp;Aboud Ahmed Awadh Bahajjaj ,&nbsp;Rajesh Kumar Manavalan ,&nbsp;Shahid Hussain","doi":"10.1016/j.solidstatesciences.2025.107890","DOIUrl":"10.1016/j.solidstatesciences.2025.107890","url":null,"abstract":"<div><div>Pollution affects land, air, and water, posing serious threats to humanity and other living things. Planning and treating polluted water are essential to safeguarding future generations since water pollution is especially harmful. Current research focuses on the vitiation of organic dyes extracted from industry and drained from water reservoirs. In this work, g-C₃N₄/Fe₂O₃/NiO/Dy₂O₃ and g-C₃N₄/CeO₂/BaO/Al₂O₃ nanocomposites are synthesized for photocatalysis application. Co-precipitation and ultra-sonication were the synthetic techniques utilized to prepare the g-C₃N₄/Fe₂O₃/NiO/Dy₂O₃ and g-C₃N₄/CeO₂/BaO/Al₂O₃ nanocomposites. The dyes Rhodamine B (RhB) and Phenol Red (PR) were selected to investigate the nanomaterial's degradation efficiency. The g-C₃N₄/Fe₂O₃/NiO/Dy₂O₃ nanocomposite demonstrated the highest efficiency, 86.37 % degradation RhB and 78 % phenol red, respectively, which showing that it is a strong contender for the treatment of contaminated water. Scavengers' tests were also conducted to establish the primary agent responsible for dye degradation. The results clearly show that hydroxyl radicals are responsible behind the degradation of these organic colors. A unique paradigm of utilizing distinct metal combinations to highlight the practical relevance in the realm of catalytic performances.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"163 ","pages":"Article 107890"},"PeriodicalIF":3.4,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring the luminescence and photometric behavior of green emitting NUV excited Er3+ doped Ca9Y(PO4)7 nanophosphor: A promising material for solid-state illumination applications","authors":"Pooja Chhillar,&nbsp;Priti Boora Doon","doi":"10.1016/j.solidstatesciences.2025.107885","DOIUrl":"10.1016/j.solidstatesciences.2025.107885","url":null,"abstract":"<div><div>The unparalleled ability of nanosized rare-earth activated phosphors stimulated by near ultraviolet (nUV) light to provide efficient visible emission has garnered huge interest as excellent sources for next-generation solid-state illumination devices. Herein, we have proposed bright green emitting Er³⁺ doped Ca₉Y(PO₄)₇ nanomaterials for application prospects in optoelectronic technology owing to its magnificent down-conversion luminescence. The phase purity and structure, surface morphology, photophysical features (e.g., excitation and emission spectra, concentration quenching, decay curves, optical energy band gap etc.) of Ca₉Y(PO₄)₇: Er³⁺ nanophosphors were investigated systematically. Phase purity and space group (trigonal with <em>R3c(161</em>)) of synthesized nanophosphors Ca₉Y(PO₄)₇: Er³⁺ were confirmed by high quality powder X-ray diffraction data. The scanning electron microscope (SEM) and high-resolution transmission electron microscope (HRTEM) images have been captured to examine surface characteristics and crystallite dimensions of Ca₉Y(PO₄)₇: Er³⁺ nanoparticles. Constituent elements of phosphors were determined by EDAX spectroscopy to depict high purity. Ca₉Y(PO₄)₇: Er³⁺ nanophosphors perform bright green emission under NUV excitation of 381 nm. The greenish light emitted at 564 nm is attributed to the transition ⁴S_3/2 → ⁴I_15/2 of Er³⁺ ions. The optimal activator concentration is 10 mol %, beyond which concentration quenching attributed to electric multipolar interactions was observed as studied via Dexter's and Van-Uitert's theoretical model. The conducting performance of the Ca₉Y(PO₄)₇: Er³⁺ nanophosphors is authenticated by their optical energy gap calculation using Kubleka-Munk and Tauc's hypothesis which falls in wide band-gap semiconductor regime. Decay curve and photoluminescent lifespan analysis using Auzel's model established high quantum efficiency of synthesized nanophosphors. The photometric features like CIE color coordinates, CCT suggested the exceptional potential of Ca₉Y(PO₄)₇: Er³⁺ nanophosphors for use as a bright green emitting segment in NUV based cool pc-WLEDs. Such NPs have interesting applications in emerging optoelectronic devices, hence rendering them of profound utility in the near future as promising contenders for near-ultraviolet (NUV) chip-based WLEDs and solid-state lighting surpassing the commercially available traditional light sources.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"163 ","pages":"Article 107885"},"PeriodicalIF":3.4,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143592047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optical response characteristics & radiation shielding properties of Sm3+ ions activated tungsten alkali borate glasses for visible laser & radiation shielding applications","authors":"G. Dedeepya ,&nbsp;Sk Mahamuda ,&nbsp;K. Swapna ,&nbsp;M. Venkateswarlu ,&nbsp;A.S. Rao","doi":"10.1016/j.solidstatesciences.2025.107888","DOIUrl":"10.1016/j.solidstatesciences.2025.107888","url":null,"abstract":"<div><div>Trivalent samarium oxide doped Tungsten Alkali Borate (TAB) glasses were synthesized by melt-quenching technique and their structural and luminescence properties were studied. The amorphous nature of prepared TAB glass was confirmed by XRD. The presence of various borate functional groups was identified from Raman Spectra. The optical band gap energies evaluated from absorption spectra were found to be 2.24, 2.25, 2.28, 2.30, 2.34 and 2.36 eV increased with the increase of Sm³⁺ ion concentration. The JO parameters were found to be high (Ω₂ = 85.6 × 10⁻²², Ω₄ = 242 × 10⁻²² &amp; Ω₆ = 313 × 10⁻²²) for TABSm1.0 glass. These parameters were then employed to assess the radiative properties of the significant fluorescent transitions ⁴G_5/2 → ⁶H_5/2, ⁴G_5/2 → ⁶H_7/2 and ⁴G_5/2 → ⁶H_9/2 of TABSm glasses. From the PL decay spectra experimental lifetimes calculated and found to be 1224, 1198, 1137, 928, 688 and 596 μs decreased due to energy transfer between neighbouring Sm³⁺ ions. Highest quantum efficiency about 92% observed for TABSm1.0 glass compared to other TABSm glasses. The CIE colour chromaticity coordinates obtained for TABSm1.0 glass - (0.58, 0.41) also confirmed the reddish-orange emission. Many shielding characteristics like “Mass Attenuation coefficient (MAC), Effective Atomic Number (Z_eff), Half Value Layer (HVL), Tenth Value Layer (TVL), Mean Free Path (MFP), Equivalent Atomic Number (Z_eq), and Exposure build-up factor” were evaluated to understand the shielding capacity of present glasses. It was found that TABSm2.5 glass possesses higher values of the radiation shielding parameters which make the TABSm2.5 glass suitable for radiation shielding applications.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"163 ","pages":"Article 107888"},"PeriodicalIF":3.4,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143561860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}