Solid State Sciences最新文献

{"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}

{"title":"Electrocatalytic activity of Cu-Co prussian blue analogue and its calcined derivatives towards OER","authors":"Farnaz Kazemzadeh,&nbsp;Behzad Haghighi","doi":"10.1016/j.solidstatesciences.2025.107887","DOIUrl":"10.1016/j.solidstatesciences.2025.107887","url":null,"abstract":"<div><div>Cu-Co prussian blue analogue (Cu-Co:PBA) was synthesized, mixed with graphite and calcined at 550 °C for 4 h to prepare calcined derivative of Cu-Co:PBA and graphite (G@Cu-Co:PBA©). Also, graphite, Cu-Co:PBA and dopant (sodium hypophosphite, thiourea, melamine and glucose for P, S, N and O doping, respectively) were mixed and calcined at a similar procedure to prepare X-doped calcined derivatives of G@Cu-Co:PBA (X-doped:G@Cu-Co:PBA© where X = P, S, N, and O). Then, different modified carbon paste electrodes (CPEs) were fabricated with the prepared materials and their electrocatalytic activities towards oxygen evolution reaction (OER) were investigated in an alkaline medium. The anodic polarization curves of the modified CPEs were recorded and their corresponding Tafel plots were obtained to calculate their onset potentials, Tafel slopes and η₁₀ (the required overpotential to achieve the anodic current density of 10 mA cm⁻²) as the electrocatalytic performance's criteria to evaluate the effect of calcination and doping on their electrocatalytic activity towards OER. The results revealed that the electrocatalytic performance of CPEs modified with X-doped:G@Cu-Co:PBA© (where X = P, S, N, and O) towards OER improved and their onset potentials and Tafel slopes decreased when CPEs were modified with X-doped in the order O-doped, N-doped, S-doped and P-doped.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"163 ","pages":"Article 107887"},"PeriodicalIF":3.4,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577104","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":"Impact of concentration and excitation wavelength on fluorescence behaviour of CuInS2 QDs","authors":"Priya Chandra,&nbsp;K.S. Ojha","doi":"10.1016/j.solidstatesciences.2025.107886","DOIUrl":"10.1016/j.solidstatesciences.2025.107886","url":null,"abstract":"<div><div>Copper indium sulfide (CuInS₂) ternary quantum dots (QDs) offer tunable optical properties for displays, efficient solar cells, and advanced biomedical imaging. In this work, CuInS₂ QDs are prepared via a one-pot solvothermal route. The XRD has been performed for structural information, revealing the chalcopyrite structure of CuInS₂ with an average crystalline size of 8 nm, consistent with particle size calculated by the HRTEM image. The functional group analysis confirms the formation of CuInS₂ QDs. A blue shift in the energy gap of the prepared QDs has been found compared to the bulk. A narrow emission peak lying at 610 nm has been observed, showing Stoke's shift of 130 nm. The fluorescence behaviour of synthesized QDs with excitation wavelength and concentration has been investigated.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"163 ","pages":"Article 107886"},"PeriodicalIF":3.4,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143561859","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":"Potential use of ZnO anchored boron industrial waste microparticles as a novel eco-friendly activator in cis-polybutadiene /natural rubber composites","authors":"Deniz Akin Sahbaz ,&nbsp;Erol Goksu","doi":"10.1016/j.solidstatesciences.2025.107884","DOIUrl":"10.1016/j.solidstatesciences.2025.107884","url":null,"abstract":"<div><div>Boron industrial waste (BIW) is a commercially valuable raw material in many industries. The evaluation of BIW is of increasing importance because of the rapid and growing consumption of raw material resources in the world. In this study, the BIW was modified by ZnO and then the ZnO anchored boron industrial waste (ZnO_BIW) was used as an activator in the vulcanization of cis-polybutadiene/natural rubber (cis-PB/NR/ZnO_BIW) composites to reduce the amount of carbon dioxide released into nature in the rubber industry, as well as decrease the vulcanization time, resulting in energy saving. The composites were prepared using different loads of ZnO_BIW (1, 3, 5, 7 and 10 phr), whose optimum proportions of commercial ZnO are used in the rubber industry. BIW, ZnO_BIW and cis-PB/NR/ZnO_BIW composites were characterized by SEM, EDX, FTIR, and XRD. The effect of the ZnO_BIW incorporation amount on the rheological, structural, and physico-mechanical properties of the cis-PB/NR/ZnO_BIW composites was assessed and the properties of the rubber composites were compared with each other. According to the results, 5 phr of ZnO_BIW has been given significantly better performance in tensile strength (15.97 N/mm²), elongation at break (742.47 %), optimum cure time (12.26 min), and cure rate index (12.47 min⁻¹) in comparison with the other phr ratios. It was found that the new activator could be used as a curing activator and simultaneously reinforcing filler. The utilization of ZnO_BIW as an activator to produce rubber products can greatly promote rubber technology to be cost-effective and has ecological potentials.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"163 ","pages":"Article 107884"},"PeriodicalIF":3.4,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601176","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":"Corrigendum to “Optical and conduction mechanism study of lead-free CsMnCl3 perovskite” [Solid State Sci. 155 (2024) 107646]","authors":"Moufida Krimi ,&nbsp;Mehdi Akermi ,&nbsp;Rym Hassani ,&nbsp;Abdallah Ben Rhaiem","doi":"10.1016/j.solidstatesciences.2025.107837","DOIUrl":"10.1016/j.solidstatesciences.2025.107837","url":null,"abstract":"","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"161 ","pages":"Article 107837"},"PeriodicalIF":3.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143520076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}