Materials Science and Engineering: B最新文献

{"title":"Impact of triiodide ion incorporation on the absorption and photovoltaic efficiency of Bismuth-Based hybrid compounds","authors":"César Tablero-Crespo","doi":"10.1016/j.mseb.2025.118007","DOIUrl":"10.1016/j.mseb.2025.118007","url":null,"abstract":"<div><div>To determine whether the incorporation of triiodide ions into Bi-based hybrid compounds can serve as a substitute for iodoplumbates perovskites without diminishing photovoltaic efficiency, we analyzed the contributions of anions and triiodide ions to the absorption coefficients and conversion efficiencies across several compounds, both with and without triiodide ions. The electronic properties and absorption coefficients were obtained from first principles. To determine and quantify the key contributors to the optical gaps, the absorption coefficients and solar cell efficiencies are split as exact many-species expansions. The results reveal that while the triiodide contribution to the absorption coefficients and efficiencies is substantial, the primary distinction between compounds is attributed to the Bi-Bi interatomic distances. Nevertheless, the introduction of triiodide ions results in an increase in efficiency compared to the precursor compounds that lack triiodide ions.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"314 ","pages":"Article 118007"},"PeriodicalIF":3.9,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optical performance enhancement of a blocked-impurity-band photodetector integrated with terahertz metalenes","authors":"Feifei Lu ,&nbsp;Lianfei Yao ,&nbsp;Chixian Liu ,&nbsp;Jingwei Ling ,&nbsp;Huiyong Deng","doi":"10.1016/j.mseb.2025.118010","DOIUrl":"10.1016/j.mseb.2025.118010","url":null,"abstract":"<div><div>The terahertz (THz) band is widely utilized in space exploration. However, the size of traditional THz detectors impedes their integration into focal plane arrays (FPAs). Advances in metasurface technology have enabled the miniaturization and large-scale integration of THz FPAs. This study demonstrates the integration of a high-resistance silicon metalens with a germanium (Ge)-based blocked-impurity-band (BIB) detector. The metalens, featuring high transmittance, focuses THz light onto a compact photosensitive element, significantly enhancing performance. The focused spot size approaches the diffraction limit, with an average focusing efficiency of 42.22 %. A 3 × 3 metalenses array exhibits excellent optical crosstalk, averaging only 1.2 %. Integration with the metalens reduces the size of the Ge-based BIB detector’s photosensitive element to 153.85 μm, achieving an absorptance of 10.12 %, which is 30.35 times higher than that without the metalens. The ultra-thin metalens promotes the miniaturization of BIB detectors, facilitating their large-scale integration into FPAs.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"314 ","pages":"Article 118010"},"PeriodicalIF":3.9,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low-dimensional structures synthesized from titanium sand: The isomorphic impurities effect on photocatalytic properties","authors":"Olga B. Kotova,&nbsp;Alexey V. Ponaryadov","doi":"10.1016/j.mseb.2025.118008","DOIUrl":"10.1016/j.mseb.2025.118008","url":null,"abstract":"<div><div>Design of affordable photocatalytically active materials is of a great interest, but overcoming the bandgap limitation of catalysts to shift the photocatalytic effect of titanium dioxide from the characteristic UV to the visible region of the spectrum is a major challenge. Advanced materials based on nanostructures can be obtained from natural raw materials with isomorphous impurities. Titania 1D structures have been synthesized from the non-magnetic component of titanium-bearing sandstone (Pizhemskoe deposit, Middle Timan, Russia). The presence of Fe and V as isomorphic impurities included in its composition leads to the formation of allowed levels in the bandgap of the catalyst, which enhance its activity. The photocatalytic efficiency has been evaluated on the example of the test reaction of trichlorofnol decomposition in aqueous medium. Titania nanotubes synthesized from commercially available chemically pure precursor were used as reference material to compare the efficiency of the photocatalyst derived from natural raw material.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"314 ","pages":"Article 118008"},"PeriodicalIF":3.9,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular engineering of PMMA-based quasi-solid-state electrolytes for dye-sensitized solar cells: Tailoring ion conductivity and thermal stability through salt-ratio modulation","authors":"Fakiha Sarwar ,&nbsp;Sofia Siddique ,&nbsp;Muhammad Younas ,&nbsp;Syed Ezaz Haider Gillani ,&nbsp;Muhammad M. Zeeshan Akram ,&nbsp;Bisma Saleem ,&nbsp;Umer Mehmood","doi":"10.1016/j.mseb.2025.118013","DOIUrl":"10.1016/j.mseb.2025.118013","url":null,"abstract":"<div><div>This study investigated the potential of polymer gel electrolytes (PGE) as a replacement for conventional liquid electrolytes in dye-sensitized solar cells (DSSCs) to enhance efficiency, stability, and long-term performance. Polymethyl methacrylate (PMMA) was utilized as the base polymer to improve the mechanical integrity of the gel electrolyte, while ammonium iodide salt was incorporated to enhance ionic conductivity. A comprehensive set of characterization techniques was employed: Scanning electron microscopy (SEM) provided detailed analysis of the surface morphology and uniformity of the electrolyte, X-ray diffraction (XRD) examined the crystalline structure and phase composition, thermal gravimetric analysis (TGA) evaluated the thermal stability, and electrochemical impedance spectroscopy (EIS) quantified the ionic conductivity. The results demonstrated that salt concentration significantly affected ionic conductivity, which in turn impacted the electrochemical performance of the DSSC. The optimized PGE achieved an energy conversion efficiency of 4.68%, with improved long-term stability compared to traditional liquid electrolytes, which exhibited an efficiency of 6.03%. However, the longevity of traditional liquid electrolyte-based DSSCs was significantly lower compared to PGE-based DSSCs. This work establishes PMMA-based PGEs as a viable alternative to liquid electrolytes, offering superior ionic conductivity, enhanced DSSC performance, greater durability, and extended longevity, positioning them for advanced renewable energy applications.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"314 ","pages":"Article 118013"},"PeriodicalIF":3.9,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermophysical properties and Optimization of modified palm Oil-Amine reinforced biocomposites for lightweight and insulating applications","authors":"Hakan Şahal ,&nbsp;Ercan Aydoğmuş ,&nbsp;Hasan Arslanoğlu","doi":"10.1016/j.mseb.2025.118012","DOIUrl":"10.1016/j.mseb.2025.118012","url":null,"abstract":"<div><div>The aim of this study is to investigate various thermophysical properties of modified palm oil-amine (MPOA) reinforced biocomposites to optimize these materials to meet the requirements of lightness and insulation. The effects of MPOA addition to biocomposites on bulk density, surface hardness, thermal conductivity coefficient, and activation energy have been evaluated. In addition, the structural and physical properties of these biocomposites are aimed to determine their potential use as lightweight and thermal insulation materials. The results show that MPOA incorporation significantly affects the bulk density, Shore A hardness, thermal conductivity, and thermal stability of biocomposites. The addition of MPOA provides significant benefits for lightweight biomaterials by reducing bulk density. However, high MPOA content decreases the surface hardness of the biocomposite, and with zirconium silicate (ZrSiO₄), this drawback is eliminated and the curing time is reduced. Increasing MPOA ratios also improve the insulation properties of biocomposites by reducing the thermal conductivity coefficient. Thermal decomposition experiment results show that higher MPOA content reduces thermal stability. Scanning electron microscopy (SEM) reveals that high levels of MPOA lead to increased surface porosity and irregularities, negatively affecting surface morphology. An optimal MPOA reinforcement level of 5 wt% provides a balance between desirable properties such as reduced density and improved thermal insulation while minimizing adverse morphological effects. Fourier-transform infrared spectroscopy (FTIR) confirms the presence of epoxy resin and the successful chemical modification of palm oil to create bioepoxy feedstock. MPOA reinforcement offers benefits such as reduced bulk density and improved thermal insulation while addressing challenges in surface morphology, mechanical properties, and thermal stability. The study concludes that biocomposites with 5 wt% MPOA provide optimum stability, making them suitable for applications requiring lightweight and thermally insulating materials without significantly compromising structural integrity. This research, the long-term performance of biocomposites, and future investigations into their potential applications will further expand their practical applicability.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"314 ","pages":"Article 118012"},"PeriodicalIF":3.9,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design high-performance symmetrical electrode of stable double perovskite oxides with in situ exsolved nanoparticles for solid oxide cells","authors":"Yibei Wang ,&nbsp;Chenchen Shi ,&nbsp;Biao Wang ,&nbsp;Renjie Tu ,&nbsp;Chunling Lu ,&nbsp;Bingbing Niu ,&nbsp;Tao Feng","doi":"10.1016/j.mseb.2025.117998","DOIUrl":"10.1016/j.mseb.2025.117998","url":null,"abstract":"<div><div>Solid oxide cells (SOCs) represent a potential device for the clean and efficient conversion of chemical energy into electrical energy. Double perovskite oxides, which can be flexibly controlled according to the need of crystal structure, have attracted widespread attention as electrode materials of SOCs. In this study, Sr_1.8FeTa_1-<em>_x</em>Ni<em>_x</em>O_6-δ has been designed and thoroughly investigated as a potential symmetric electrode for SOCs. Sr_1.8FeTa_0.6Ni_0.4O_6-δ (SFTN4) can be obtained in air and it can in-situ exsolved Ni-Fe alloy nanoparticles in reducing condition. The SFTN4 sample exhibited good structural stability in pure CO₂ environments. At 800 ℃, the polarization impedance (<em>R_p</em>) values of SFTN4 sample measured in air and H₂ are 0.052 and 0.185 Ω cm², respectively. At 850 ℃, the electrolyte-supported single cells with SFTN4 symmetrical electrode show maximum power densities of 1041.6, 613.9, 554.6 and 415.1 mW cm⁻² when using H₂, liquid C₂H₅OH, C₃H₈ and solid carbon as fuels, respectively. At 1.3 V, the current density for the electrolysis of pure CO₂ is −2.117 A cm⁻², while the current density for the electrolysis of seawater is −0.713 A cm⁻² with same single cell. Summary, SFTN4 material shows great potential as a symmetrical electrode for SOCs.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"314 ","pages":"Article 117998"},"PeriodicalIF":3.9,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of three-dimensional anodes for SO2 depolarized electrolyzers by growing Pt clusters on graphite felt fibers","authors":"Luyao Xie ,&nbsp;Ru Tian ,&nbsp;Peng Xiao ,&nbsp;Laijun Wang ,&nbsp;Yingxia Li ,&nbsp;Yongshui Qu ,&nbsp;Ping Zhang ,&nbsp;Songzhe Chen","doi":"10.1016/j.mseb.2025.118004","DOIUrl":"10.1016/j.mseb.2025.118004","url":null,"abstract":"<div><div>SO₂-depolarized electrolysis (SDE) is the key step of the hybrid sulfur (HyS) process, which is a promising hydrogen-producing thermochemical water splitting cycle. The conventional 2D anode limits the performance of SDE cells. In this work, 3D anodes were prepared by impregnation–reduction method, reducing H₂PtCl₆ with HCOOH under mild conditions for the direct growth of Pt particles on high void content graphite felt (GF). The SEM, XPS, and ICP-OES tests confirm that the Pt clusters are effectively loaded on the fibers of GF. The effects of H₂PtCl₆ reduction temperature and time length on the SDE performance were investigated. The 3D anode prepared by H₂PtCl₆ reduction at 65 °C for 5 h gives the highest performance to the electrolyzer, achieving current density of 1.54 A/cm² at 1.2 V cell voltage, 80 °C and anolyte flow rate of 360 mL/min. This performance is significantly higher than that of the conventional SDE cell applying 2D anode.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"314 ","pages":"Article 118004"},"PeriodicalIF":3.9,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improved resistive switching characteristics of Au/TiO2/Au memristors on PDMS substrates with pyramid arrays","authors":"Jaejun Lee ,&nbsp;Kibum Song ,&nbsp;Keun-Young Shin,&nbsp;Woongkyu Lee","doi":"10.1016/j.mseb.2025.117986","DOIUrl":"10.1016/j.mseb.2025.117986","url":null,"abstract":"<div><div>Memristors hold significant importance for future data storage and neuromorphic computing devices. However, complementary metal oxide semiconductor-compatible memristors on Si substrates suffer from harsh non-uniform resistance switching behavior due to the random ion movement that results in defect formation. To improve the uniformity of conducting filament formation/destruction through uniform ion movements, a memristor device on a pyramid-structured polydimethylsiloxane (PDMS) substrate was fabricated to induce electric field concentration at the top of the structure. The pyramid-structured PDMS not only serves as an electric field concentrator but also has lower crack density, enhancing the adhesion of memristor devices to the substrate. While memristors fabricated on the flat PDMS substrate showed no resistance switching, the pyramid-structured device was confirmed to operate for more than 1,000 resistive switching cycles, with set and reset voltages of 3.15 V ± 0.36 V and −1.44 V ± 0.35 V, respectively, and an on/off ratio exceeding 10⁶.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"314 ","pages":"Article 117986"},"PeriodicalIF":3.9,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Annealing temperature optimization for dip-coated Cu2SnS3 thin films: Sustainable pathway to CTS/Zn(O, S) solar cells via numerical simulation","authors":"Gadha Menon K. ,&nbsp;Anitha T.V. ,&nbsp;Prabeesh Punathil ,&nbsp;Vimalkumar T.V.","doi":"10.1016/j.mseb.2025.118003","DOIUrl":"10.1016/j.mseb.2025.118003","url":null,"abstract":"<div><div>Earth abundant Cu₂SnS₃ (CTS) films were fabricated on glass substrates using facile dip coating technique. For exploring the role of annealing temperature in the formation of CTS films, the deposited films were annealed in an inert atmosphere at various temperatures. XRD analysis confirmed the formation of Cu₂SnS₃ and its monoclinic structure was further identified by Raman spectroscopy. Hall measurements revealed the <em>p</em>–type nature of films and observed a carrier concentration of ∼ 10¹⁷ cm⁻³ for all the samples. High absorption coefficient value (α &gt; 10⁴ cm⁻¹) and direct band gap in the range of 1.43 eV − 1.75 eV make the samples a suitable candidate in the field of photovoltaics. The influence of these process parameters on a solar cell based on CTS was analyzed by the SCAPS simulation program. At an annealing temperature of 475 °C, the simulated solar cell demonstrated the best power conversion efficiency PCE of 19.77 %.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"314 ","pages":"Article 118003"},"PeriodicalIF":3.9,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"TiCw/TiC ceramics composites: SPS preparation, thermal and mechanical properties","authors":"Yongren Liang ,&nbsp;Hua Jiao ,&nbsp;Wendu Yang ,&nbsp;Jiwei Feng ,&nbsp;Qingxiang Wang ,&nbsp;Kang Zhao","doi":"10.1016/j.mseb.2025.118005","DOIUrl":"10.1016/j.mseb.2025.118005","url":null,"abstract":"<div><div>Plasma sintering (SPS) is an effective method for improving the strength and hardness properties of materials. A method for adding TiC whiskers is proposed to simultaneously enhance thermal and mechanical properties of TiC-based ceramic composites through discharge SPS technology. TiC whiskers (ranging from 0 to 5 wt%) were incorporated into commercial TiC-based ceramics as a reinforcement material. The results demonstrate that the addition of TiC whiskers significantly improves both the thermal and mechanical properties of the composites, with the material containing 5 wt% whiskers showing the best performance. Specifically, compared to the material without whisker addition, the flexural strength increased by 184.6 %, while the Vickers hardness reached 97.09 GPa, marking an increase of 194.7 %. The compressive strength achieved 532 MPa, and the Young’s modulus reached 14.67 GPa, representing increases of 188.0 % and 155.1 %, respectively. Furthermore, the inclusion of TiC whiskers also enhances thermal properties, with room temperature thermal diffusivity and thermal conductivity increasing by 12.9 % and 5.2 %, respectively, compared to the whisker-free material.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"314 ","pages":"Article 118005"},"PeriodicalIF":3.9,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}