Journal of Materials Science: Materials in Electronics最新文献

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Bismuth molybdate-bismuth sulfide/poly (2-aminobenzene-1-thiol) nanocomposite impact on hydrogen generation from wastewater without external electrolyte 钼酸铋-硫化铋/聚(2-氨基苯-1-硫醇)纳米复合材料对无外部电解质废水制氢的影响
IF 2.8 4区 工程技术
Journal of Materials Science: Materials in Electronics Pub Date : 2026-04-27 DOI: 10.1007/s10854-026-17029-x
Mohamed Rabia, Fatemah H. Alkallas, Amira Ben Gouider Trabelsi, K. S. Almugren
{"title":"Bismuth molybdate-bismuth sulfide/poly (2-aminobenzene-1-thiol) nanocomposite impact on hydrogen generation from wastewater without external electrolyte","authors":"Mohamed Rabia,&nbsp;Fatemah H. Alkallas,&nbsp;Amira Ben Gouider Trabelsi,&nbsp;K. S. Almugren","doi":"10.1007/s10854-026-17029-x","DOIUrl":"10.1007/s10854-026-17029-x","url":null,"abstract":"<div><p>Hydrogen gas (H<sub>2</sub>) production from sanitation water represents a groundbreaking approach to utilizing an unconventional yet sustainable electrolyte source for green hydrogen generation. In this study, an innovative photocathode is synthesized using a nanocomposite of bismuth molybdate, bismuth sulfide, and poly(2-aminobenzene-1-thiol) (Bi<sub>2</sub>MoO<sub>6</sub>–Bi<sub>2</sub>S<sub>3</sub>/P2ABT). The synthesis involved a two-step process: first, the preparation of Bi<sub>2</sub>MoO<sub>6</sub>, and then the oxidation of 2-aminobenzenethiol to form the complete composite. The resulting nanocomposite exhibits exceptional optical properties, including a broad absorption spectrum and an optimal optical bandgap of 1.8 eV that estimate a promising photocatalytic application, particularly in harnessing solar energy to drive hydrogen evolution reactions. The photocathode is applied inside a three-electrode cell under full-spectrum white light, at different specific wavelengths, and in complete darkness. Under white light illumination, the current density (J<sub>ph</sub>), which correlates directly with hydrogen gas production, is − 0.19 mA.cm<sup>−2</sup> that decreased slightly under monochromatic light conditions, registering − 0.18 mA.cm<sup>−2</sup> at 340 nm and − 0.16 mA.cm<sup>−2</sup> at 730 nm, demonstrating the photocathode's responsiveness to different wavelengths. In dark conditions, the J<sub>ph</sub> dropped significantly, highlighting the photocatalytic nature of the hydrogen production process. The evaluated H<sub>2</sub> rate under white light is 5.0 µmol/h per 10 cm<sup>2</sup>. Notably, the photocathode’s fabrication process is cost-effective and straightforward, making it aviable candidate for large-scale applications. Utilizing sanitation water offers a dual benefit through its applications as an electrolyte: sustainable energy production and wastewater valorization.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"37 12","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147796418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of argon ion beam irradiation on the structure, optical, and dielectric properties of the flexible PEO/CeO2 nanocomposite film 氩离子束辐照对柔性PEO/CeO2纳米复合膜结构、光学和介电性能的影响
IF 2.8 4区 工程技术
Journal of Materials Science: Materials in Electronics Pub Date : 2026-04-27 DOI: 10.1007/s10854-026-17245-5
M. M. Abdelhamied, A. M. Abdelreheem, H. M. Abdel-hamid
{"title":"Influence of argon ion beam irradiation on the structure, optical, and dielectric properties of the flexible PEO/CeO2 nanocomposite film","authors":"M. M. Abdelhamied,&nbsp;A. M. Abdelreheem,&nbsp;H. M. Abdel-hamid","doi":"10.1007/s10854-026-17245-5","DOIUrl":"10.1007/s10854-026-17245-5","url":null,"abstract":"<div><p>In the present work, low energy argon ion beams were utilized to change the structure, optical, and dielectric properties of the flexible polyethylene oxide/cerium oxide (PEO/CeO<sub>2</sub>) nanocomposite film, which was fabricated using the solution-casting method. The XRD analysis confirmed the change in film structure upon irradiation through the decrease in peaks intensity and significant broadening, reflecting a reduction in crystallinity. Moreover, the FTIR also revealed the alteration in structure of the treated films due to the reduction in peaks intensity and peaks shift. The SEM images confirmed the progressive increase in roughness and porosity of the treated films. Meanwhile, the interaction of energetic Ar⁺ ions with PEO/CeO<sub>2</sub> nanocomposite films was simulated using SRIM and TRIM codes. These changes in structure led to improving the optical and dielectric properties of the treated films compared to pristine film. In which, the optical band gap decreased from 4.70 eV of the untreated film to 4.59, 4.49, and 4.24 eV of the treated PEO/CeO<sub>2</sub> films at fluence 2 × 10<sup>16</sup>, 4 × 10<sup>16</sup>, and 6 × 10<sup>16</sup> ions/cm<sup>2</sup>, respectively. This reduction in values of band gap were accompanied by an increase in Urbach energy from 1.88 eV to 2.00, 2.14, and 2.31 eV, respectively. In addition, at 0.1 Hz, a great increase in dielectric constant (<i>ε</i>′) and dielectric loss (<i>ε</i>″) values were noticed after irradiation, which led to improving the discharged energy density (U) of the untreated film from 0.054 to 0.16 J/m<sup>3</sup> of the treated film by 6 × 10<sup>16</sup> ions/cm<sup>2</sup>, respectively. At 100 Hz, the Ac conductivity of the pristine film also increased from 7.62 × 10<sup>–7</sup> S/m to 1.84 × 10<sup>–6</sup> S/m upon irradiation using 6 × 10<sup>16</sup> ions/m<sup>2</sup>. In opposite, the electric modulus and complex impedance behaviors decreased with an increase in fluence of ion beam irradiation. Besides, a respectively reduction in relaxation time (τ<sub>m</sub>) from 4.9 × 10<sup>–7</sup> s to 3 × 10<sup>–7</sup>, 2.3 × 10<sup>–7</sup>, and 1.8 × 10<sup>–7</sup> s was observed with increasing the Ar<sup>+</sup> ion beam fluence. The reported enhancements in this work would open the road for appropriating the irradiated (PEO/CeO<sub>2</sub>) films for voltaic and energy storage applications.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"37 12","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147796419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development and physicochemical evaluation of 2-amino-6-methylpyridinium hemifumarate dihydrate for advanced optical limiting devices 先进光学限制器件用2-氨基-6-甲基半马酸二水合吡啶的研制及理化评价
IF 2.8 4区 工程技术
Journal of Materials Science: Materials in Electronics Pub Date : 2026-04-27 DOI: 10.1007/s10854-026-17226-8
G. Ahila, M. Divya Bharathi, M. Jayachandiran, P. Vani, P. Vijayakumar, A. Raja, Paavai. Era, Mohd Afzal, V. Viswanathan, RO.MU. Jauhar
{"title":"Development and physicochemical evaluation of 2-amino-6-methylpyridinium hemifumarate dihydrate for advanced optical limiting devices","authors":"G. Ahila,&nbsp;M. Divya Bharathi,&nbsp;M. Jayachandiran,&nbsp;P. Vani,&nbsp;P. Vijayakumar,&nbsp;A. Raja,&nbsp;Paavai. Era,&nbsp;Mohd Afzal,&nbsp;V. Viswanathan,&nbsp;RO.MU. Jauhar","doi":"10.1007/s10854-026-17226-8","DOIUrl":"10.1007/s10854-026-17226-8","url":null,"abstract":"<div><p>The present work aims to focus on the synthesis, growth, and characterization of a slow-evaporation-grown 2-amino-6-methylpyridinium hemifumarate dihydrate. X-ray diffraction analysis confirmed the crystalline quality of the compound with lattice parameters of a = 9.7112(10) Å, b = 14.4343(12) Å, c = 7.4723(7) Å and volume = 1040 Å<sup>3</sup>. Verification of the presence of functional groups was achieved through FTIR and FT-Raman studies. The identification of carbon and hydrogen molecules was confirmed via NMR analysis. UV–vis–NIR spectral studies were employed to determine the optical transmittance range and cut-off wavelength. The luminescent properties of the 2AF crystal were explored, while the dielectric properties of the 2AF crystal were analyzed through dielectric studies. Thermal analysis indicated stability up to 104 °C, with subsequent decomposition stages observed through differential thermal analysis (DTA). The crystal exhibited reverse saturable absorption (RSA) behavior, crucial for applications in optical limiting and laser protection. The microhardness analysis indicated that the crystal is classified as a soft material.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"37 12","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147796639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
One-pot synthesis and blue-shifted emission of In(Ga)P quantum dots In(Ga)P量子点的一锅合成及蓝移发射
IF 2.8 4区 工程技术
Journal of Materials Science: Materials in Electronics Pub Date : 2026-04-27 DOI: 10.1007/s10854-026-17283-z
Yohan Ahn, Thuy Truong, Jianne Kim, Bright Walker, Jang Hyuk Kwon
{"title":"One-pot synthesis and blue-shifted emission of In(Ga)P quantum dots","authors":"Yohan Ahn,&nbsp;Thuy Truong,&nbsp;Jianne Kim,&nbsp;Bright Walker,&nbsp;Jang Hyuk Kwon","doi":"10.1007/s10854-026-17283-z","DOIUrl":"10.1007/s10854-026-17283-z","url":null,"abstract":"<div><p>Despite the versatile photophysical properties of quantum dots (QDs), the toxicity, potential health risks, and environmental impacts of widely used Cd or Pb-based QDs have motivated a search for QDs based on nontoxic alternatives. Indium phosphide (InP) QDs are one of the most promising types of III–V semiconducting nanocrystals due to the wide tunability of their emission wavelength and the non-toxicity of InP. Although InP QDs have desirable properties, it is difficult to achieve blue emission with pure InP QDs. Alloying with other elements to increase the bandgap is one approach to achieve blue emission. Ga is in the same group as In; GaP has a larger bandgap (2.27 eV) compared to InP (1.35 eV) but shares the same zinc blende crystal structure, so we explored the use of Ga as an alloying element in InP QDs. InGaP alloys have previously been reported in multi-step processes involving ion-exchange; in this work, we demonstrate the synthesis of InGaP QDs using a one-pot method using a stoichiometric excess of Ga, while limiting the amount of In in the reaction. InGaP cores were synthesized at different ratios of In to Ga and blue-shifts of absorption peaks were confirmed with increasing Ga content. After shell growth of high Ga-content cores, InGaP QDs showed sky-blue fluorescence, close to the blue emission necessary for display applications and blue-shifted compared to pure InP QDs. The photoluminescence quantum yield and full-width at half-maximum of the emission from InGaP QDs were 49.9% and 60 nm at 491 nm, respectively.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"37 12","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147796413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Regulation of oxygen vacancy concentration and grain refinement via Sm2O3 doping for synergistic enhancement of energy storage performance of NN-BMT-based ceramics 通过Sm2O3掺杂调控氧空位浓度和晶粒细化以协同增强nn - bmt基陶瓷的储能性能
IF 2.8 4区 工程技术
Journal of Materials Science: Materials in Electronics Pub Date : 2026-04-26 DOI: 10.1007/s10854-026-17337-2
Hanlv Li, Xiusheng Wu, Hongjuan Wen, Naiji Zhou, Jufang Cao, Xuejun Xin
{"title":"Regulation of oxygen vacancy concentration and grain refinement via Sm2O3 doping for synergistic enhancement of energy storage performance of NN-BMT-based ceramics","authors":"Hanlv Li,&nbsp;Xiusheng Wu,&nbsp;Hongjuan Wen,&nbsp;Naiji Zhou,&nbsp;Jufang Cao,&nbsp;Xuejun Xin","doi":"10.1007/s10854-026-17337-2","DOIUrl":"10.1007/s10854-026-17337-2","url":null,"abstract":"<div><p>To further improve the energy storage performance of NaNbO<sub>3</sub>-based ceramics, which are widely regarded as promising candidates for advanced energy storage devices, Sm<sub>2</sub>O<sub>3</sub> was doped into 0.9NaNbO<sub>3</sub>—0.1BiMg<sub>0.5</sub>Ti<sub>0.5</sub>O<sub>3</sub> ceramic matrix via a conventional solid-state reaction method. The results show that Sm<sup>3</sup>⁺ ions can effectively regulate the phase composition of the ceramics, significantly improve their relaxation behavior, refine the grain size, and effectively reduce the concentration of oxygen vacancies, thereby optimizing the overall energy storage properties. At the doping amount of x = 0.03, the ceramic sample achieved a recoverable energy storage density (W<sub>rec</sub>) of 5.51 J/cm<sup>3</sup> and an energy storage efficiency of 80.2% under an electric field of 450 kV/cm, with excellent temperature stability over a wide range. Meanwhile, it also exhibited an ultrafast discharge rate of 20.8 ns, a high current density of 984.64 A/cm<sup>2</sup>, and a superior power density of 89.71 MW/cm<sup>3</sup>, indicating great application potential in high-power energy storage fields.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"37 12","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147796701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Exploring the electrochemical performance of α-CoMoO4 nanoflakes for energy storage applications α-CoMoO4纳米片储能性能研究
IF 2.8 4区 工程技术
Journal of Materials Science: Materials in Electronics Pub Date : 2026-04-26 DOI: 10.1007/s10854-026-17232-w
V. Maithreyee, C. Karnan
{"title":"Exploring the electrochemical performance of α-CoMoO4 nanoflakes for energy storage applications","authors":"V. Maithreyee,&nbsp;C. Karnan","doi":"10.1007/s10854-026-17232-w","DOIUrl":"10.1007/s10854-026-17232-w","url":null,"abstract":"<div><p>In this study, α-CoMoO<sub>4</sub> is prepared from β-CoMoO<sub>4</sub> using the piezochromic property which involves a color change from purple to green upon the application of pressure. The prepared material is characterized using XRD, FTIR, Raman spectroscopy, XPS, SEM–EDX, BET, and BJH analyses to elucidate the crystal structure, the functional groups, oxidation states, surface morphology, and elemental composition. The working electrode prepared using α-CoMoO<sub>4</sub> is evaluated in a three-electrode system with 1 M KOH as electrolyte to understand the electrochemical performance. The specific capacitance and the capacity of α-CoMoO<sub>4</sub> calculated from GCD curves are 316.5 F/g and 183.6 C/g at 1 A/g current density, respectively. The specific capacitance from the CV at 1 mV/s scan rate is 329.4 F/g. The CV curves are used to interpret the quasi-reversible redox reactions at the working electrode–electrolyte interface. The prevalence of diffusion-controlled redox processes in the material is confirmed using power law analysis. The nanoflake structure ensures higher ion interaction at the interfaces of the electrode and electrolyte. The R<sub>ct</sub> after stability is determined to be 21.7 Ω from the EIS analyses. Furthermore, the α-CoMoO<sub>4</sub> working electrode exhibits a stability of 69% with a coulombic efficiency of 95.5% after 6000 charge–discharge cycles.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"37 12","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147796703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Exploring the photocatalytic potential of novel binary ZnSe/NiWO4 heterostructure towards acid red 94 degradation: unveiling the kinetics and mechanistic perspectives 探索新型二元ZnSe/NiWO4异质结构对酸性红94降解的光催化潜力:揭示动力学和机理观点
IF 2.8 4区 工程技术
Journal of Materials Science: Materials in Electronics Pub Date : 2026-04-26 DOI: 10.1007/s10854-026-17340-7
Ruhit Kumar Paul, Saptarshi Roy, Akbar Hussain, Mohammed Ahmaruzzaman
{"title":"Exploring the photocatalytic potential of novel binary ZnSe/NiWO4 heterostructure towards acid red 94 degradation: unveiling the kinetics and mechanistic perspectives","authors":"Ruhit Kumar Paul,&nbsp;Saptarshi Roy,&nbsp;Akbar Hussain,&nbsp;Mohammed Ahmaruzzaman","doi":"10.1007/s10854-026-17340-7","DOIUrl":"10.1007/s10854-026-17340-7","url":null,"abstract":"<div><p>A novel binary ZnSe/NiWO<sub>4</sub> (ZS/NWO) nanocomposite was successfully fabricated via in-situ modification of ZnSe with NiWO<sub>4</sub>, resulting in a well-defined heterogeneous structure through a one-pot hydrothermal strategy, following a heterogeneous nucleation process. Morphological analysis revealed that pure ZnSe exhibited agglomerated particles, while pure NiWO<sub>4</sub> showed a compact block-like structure. In comparison to this, the fabricated composite showed an aggregated assembly of particles, without any clear distinction between the individual components, indicating strong interfacial integration between the two components. The incorporation of NiWO<sub>4</sub> into ZnSe was found to significantly enhance the visible-light absorption characteristics, as evidenced by the reduction in bandgap energy from 2.61 eV for pristine ZnSe to 2.48 eV for the ZS/NWO nanocomposite. Photoluminescence studies further demonstrated the efficient separation of photogenerated charge carriers, thereby mitigating recombination losses and augmenting the photocatalytic performance. The photocatalytic potential of the synthesized heterostructure was investigated through the sunlight-assisted degradation of Acid Red 94 dye, achieving a maximum degradation efficiency of 84% for a 30 mg/L solution within 90 minutes under optimized conditions at neutral pH, while on the other hand, pH study indicated an increased degradation efficiency at acidic pH. Kinetic investigations aligned with the pseudo-first-order kinetic model, exhibiting a rate constant of 0.02048 min<sup>−1</sup>, while mechanistic insights were elucidated through the identification of reactive oxygen species (ROS) and degradation intermediates using HR-LCMS, VB-XPS, and radical scavenging tests. Based on band alignment, a direct Z-scheme heterojunction mechanism is proposed, wherein photogenerated electrons in the conduction band of NiWO<sub>4</sub> recombine with holes in the valence band of ZnSe, resulting in the accumulation of electrons in ZnSe, while holes remains in the valence band of NiWO<sub>4</sub>, thereby enhancing charge separation and photocatalytic efficiency. Collectively, this research highlights the potential of ZS/NWO heterostructures as highly efficient visible-light-driven photocatalysts for environmental remediation in the days to come.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"37 12","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147796702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrochemical performance of ZnO:MnO:VO ternary metal oxide nanocomposite for supercapacitor applications 超级电容器用ZnO:MnO:VO三元金属氧化物纳米复合材料的电化学性能
IF 2.8 4区 工程技术
Journal of Materials Science: Materials in Electronics Pub Date : 2026-04-26 DOI: 10.1007/s10854-026-17257-1
Rekha Kumari, Pankaj Kumar Sharma, Vivek Kumar Shukla, Yogesh Kumar
{"title":"Electrochemical performance of ZnO:MnO:VO ternary metal oxide nanocomposite for supercapacitor applications","authors":"Rekha Kumari,&nbsp;Pankaj Kumar Sharma,&nbsp;Vivek Kumar Shukla,&nbsp;Yogesh Kumar","doi":"10.1007/s10854-026-17257-1","DOIUrl":"10.1007/s10854-026-17257-1","url":null,"abstract":"<div><p>Ternary transition metal oxides (TTMOs) have recently gained attention as promising electrode materials due to their rich redox chemistry, high theoretical capacitance, and synergistic effects among constituent metals. In particular, nanocomposites incorporating ZnO:MnO:VO (ZMV) phases offer enhanced electrochemical performance, structural stability, and ion transport properties. In this study, we report the successful synthesis of ZMV nanocomposites via a controlled hydrothermal route followed by thermal treatment. X-ray diffraction (XRD) analysis revealed that the synthesized material predominantly features the face-centered cubic (FCC) phase of MnO, along with the Wurtzite phase of ZnO and Orthorhombic VO, confirming the multiphase composite structure. Cyclic voltammetry (CV) analysis demonstrated a specific capacitance of 232.11 Fg⁻1. Fabricated devices possess good energy density of 20.6 WhKg<sup>−1</sup>, excellent power density 800 WKg<sup>−1</sup>, and superior cyclic stability of 97.2% after 5000 cycles of charge and discharge. These findings highlight the potential of ZnO:MnO:VO nanocomposites as efficient electrode materials in next-generation supercapacitors, contributing significantly to the development of advanced energy storage technologies.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"37 12","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147796704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Structural transformation and dimensional control for high-performance photodetection in Cs3Bi2I9-xBrx perovskites 高性能光探测Cs3Bi2I9-xBrx钙钛矿的结构转变和尺寸控制
IF 2.8 4区 工程技术
Journal of Materials Science: Materials in Electronics Pub Date : 2026-04-26 DOI: 10.1007/s10854-026-17336-3
Zhiheng Liu, Kaimin Wang, Lang Gu, Rui Shi, Sancan Han
{"title":"Structural transformation and dimensional control for high-performance photodetection in Cs3Bi2I9-xBrx perovskites","authors":"Zhiheng Liu,&nbsp;Kaimin Wang,&nbsp;Lang Gu,&nbsp;Rui Shi,&nbsp;Sancan Han","doi":"10.1007/s10854-026-17336-3","DOIUrl":"10.1007/s10854-026-17336-3","url":null,"abstract":"<div><p>All-inorganic bismuth-based perovskites have emerged as promising candidates to replace lead-based perovskites due to their low toxicity and excellent environmental stability. However, the zero-dimensional (0D) structure of Cs<sub>3</sub>Bi<sub>2</sub>I<sub>9</sub> limits its charge transport capability, hindering its application in optoelectronic devices. In this work, a series of Br-doped Cs<sub>3</sub>Bi<sub>2</sub>I<sub>9-x</sub>Br<sub>x</sub> (x = 1–8) perovskite single crystals were successfully prepared via a modified anti-solvent vapor-assisted crystallization method, and their crystal structure, morphological evolution, and optoelectronic properties were systematically investigated. With increasing Br content, the crystals gradually transform from hexagonal prisms to hexagonal platelets, accompanied by a structural transformation from the 0D <i>P</i>6<sub>3</sub>/<i>mmc</i> phase to the 2D <i>P</i>–3<i>m</i> phase at the critical composition x = 3. At this transition point, Cs<sub>3</sub>Bi<sub>2</sub>I<sub>6</sub>Br<sub>3</sub> single crystals exhibit the highest crystallinity and the smallest band gap (1.86 eV), as confirmed by UV–vis spectroscopy and further supported by density functional theory (DFT) calculations (calculated band gap ~ 1.8 eV). Raman spectroscopy reveals the gradual disappearance of [Bi<sub>2</sub>I<sub>9</sub>]<sup>3−</sup> dimer vibrations and the emergence of Bi-Br vibrational modes, providing direct local structural evidence for the 0D → 2D transformation. A photodetector fabricated from the Cs<sub>3</sub>Bi<sub>2</sub>I<sub>6</sub>Br<sub>3</sub> single crystal exhibits a responsivity of 17.53 mA W⁻<sup>1</sup>, a specific detectivity of 4.5 × 10<sup>10</sup> Jones, an on/off ratio of 125, and an external quantum efficiency (EQE) of 5.7% at 380 nm. This study provides an effective strategy for regulating the dimensionality and band gap of bismuth-based perovskites, promoting their application in ultraviolet photodetection.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"37 12","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147796627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
SDS-directed WO3 NRs: a cost-effective dual-functional material for DSSC and photocatalysis sds定向WO3 NRs:一种高性价比的DSSC和光催化双功能材料
IF 2.8 4区 工程技术
Journal of Materials Science: Materials in Electronics Pub Date : 2026-04-26 DOI: 10.1007/s10854-026-17229-5
Rukhsar Bi Momin, Rekha Rajput, Gopika Rajan, Rahilah Shaikh, Rohidas B. Kale
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