Materials Science and Engineering: B最新文献_第10页

Study on the uniformity of microcrystalline glass processing via magnetorheological polishing 微晶玻璃磁流变抛光均匀性研究

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2026-04-01 Epub Date: 2026-01-02 DOI: 10.1016/j.mseb.2025.119162

Mingming Lu, Pengfei Xu, Jieqiong Lin, Yongsheng Du, Limin Zhang, Bowen Yang

To address the challenge of achieving surface uniformity in microcrystalline glass magnetorheological polishing (MRP), this study proposes a method for predicting and evaluating surface uniformity based on the motion trajectories of abrasive particles. First, a mathematical model of abrasive particle trajectories was established based on kinematic principles. COMSOL magnetic field simulations defined the physical boundaries of the effective polishing zone under Halbach ring arrays. The coefficient of variation (Cv) of particle trajectory density was innovatively introduced as a new metric for quantifying trajectory uniformity. Second, the numerical simulation system reveals the influence mechanisms of three key process parameters-workpiece speed, polishing disc speed, and eccentricity-on surface uniformity: increasing workpiece speed extends the abrasive particle trajectory path but tends to cause trajectories to cluster toward the workpiece center; polishing disc speed significantly affects trajectory overlap rate and distribution range; reducing eccentricity promotes dense abrasive particle distribution in the workpiece center region, thereby enhancing overall uniformity. Through systematic optimization, the study identified the optimal parameter combination: workpiece speed of 700 r/min, polishing disc speed of 60 r/min, and eccentricity of 28.6 mm. At these settings, the simulated Cv value was minimized, and the abrasive particle trajectory distribution was most uniform. Experimental validation demonstrated that under different process parameters, the trends in the coefficient of variation (Cv) of workpiece surface roughness and surface light transmittance closely matched the simulated Cv trends, confirming the validity of the established model and simulation experiments.

为了解决微晶玻璃磁流变抛光（MRP）中实现表面均匀性的挑战，本研究提出了一种基于磨料颗粒运动轨迹预测和评估表面均匀性的方法。首先，基于运动学原理建立了磨料颗粒运动轨迹的数学模型。COMSOL磁场模拟定义了Halbach环阵列下有效抛光区的物理边界。创新性地引入粒子轨迹密度变异系数（Cv）作为量化轨迹均匀性的新指标。其次，数值模拟系统揭示了工件速度、抛光盘速度和偏心距三个关键工艺参数对表面均匀性的影响机理：工件速度的增加使磨料颗粒轨迹路径延长，但往往导致轨迹向工件中心聚集；抛光盘转速显著影响轨迹重叠率和分布范围；减小偏心率有利于磨料颗粒在工件中心区域的密集分布，从而提高整体的均匀性。通过系统优化，确定了最优参数组合：工件转速700 r/min，抛光盘转速60 r/min，偏心距28.6 mm。在此条件下，模拟Cv值最小，磨粒轨迹分布最均匀。实验验证表明，在不同工艺参数下，工件表面粗糙度和表面透光率的变异系数（Cv）的变化趋势与仿真Cv的变化趋势非常吻合，验证了所建立模型和仿真实验的有效性。

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引用次数: 0

Crystal growth of CdZnO thin films: a combined numerical and experimental study in a two-inlet horizontal MOCVD reactor CdZnO薄膜的晶体生长：双入口水平MOCVD反应器中数值与实验相结合的研究

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2026-04-01 Epub Date: 2026-01-20 DOI: 10.1016/j.mseb.2026.119207

Javier Yeste, Vicente Muñoz-Sanjosé

This work presents a combined numerical and experimental study of Cd₁₋ₓZnₓO thin film growth in a two-inlet horizontal MOCVD reactor. A three-dimensional model was used to analyse flow patterns, temperature fields, and precursor transport, enabling a direct comparison between helium and nitrogen as carrier gases. It was determined that helium produces smooth, centrally directed longitudinal flow, higher diffusion coefficients, and more uniform temperature fields, but results in larger film composition variations. In contrast, nitrogen induces longitudinal convective rolls that generate heterogeneous temperature zones, enhanced convective mixing, and a reduced effective boundary-layer thickness, leading to smoother zinc composition gradients at the expense of sharper thickness variations. These trends were experimentally validated through the deposition of CdZnO films on 2-in. r-sapphire substrates and the spatial characterization of their thickness and composition.

本文介绍了在双入口水平MOCVD反应器中Cd₁ₓZnₓO薄膜生长的数值和实验研究。三维模型用于分析流动模式、温度场和前体输运，从而可以直接比较氦气和氮气作为载气的情况。结果表明，氦能产生平滑的、集中定向的纵向流动、较高的扩散系数和更均匀的温度场，但导致膜成分变化较大。相反，氮诱导纵向对流卷产生非均匀温度区，增强对流混合，减少有效边界层厚度，导致锌成分梯度更平滑，而厚度变化则更剧烈。这些趋势通过在2-in表面沉积CdZnO薄膜得到了实验验证。r-蓝宝石衬底及其厚度和组成的空间表征。

引用次数: 0

Design of ZnAl-layered double hydroxide-based composite through in situ growth of ZIF-67 for enhanced photocatalytic performance 通过原位生长ZIF-67设计zno层状双氢氧化物基复合材料以增强光催化性能

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2026-04-01 Epub Date: 2026-01-18 DOI: 10.1016/j.mseb.2026.119202

Isna Nurmilatul Azizah, Widyan Muhammad Naufal, Sayekti Wahyuningsih, Witri Wahyu Lestari

The design of heterojunction-based photocatalysts offers a promising way to enhance photocatalytic efficiency. This study focuses on synthesizing and characterizing a ZIF-67@mixed metal oxide (ZIF-67@MMO) composite to investigate the effect of ZIF-67 incorporation on its structural and optical properties. ZnAl-layered double hydroxide (ZnAl-LDH) was synthesized using the co-precipitation method with Zn/Al molar ratios of 2, 3, and 4, followed by calcination at 800 °C to obtain MMO. XRD analysis revealed that a Zn/Al ratio of 3 produced optimal ZnO and ZnAl₂O₄ spinel phases. ZIF-67, a cobalt-based metal-organic framework, was then grown in-situ on MMO surfaces with mass ratios of 5%, 10%, and 15%. Structural and optical characterizations confirmed that all composites retained their crystalline integrity while exhibiting reduced band gap energies, thereby improving light absorption and charge separation. The ZIF-67@MMO composites enhanced electron-hole transfer efficiency, resulting in superior photocatalytic activity. The MZ67–15% composite, with 15% ZIF-67 loading, achieved nearly complete degradation of the indigo carmine (IC) dye within 120 min, showing a first-order rate constant of 31.6 × 10⁻³ min⁻¹, 6.7 times higher than that of pure MMO. Therefore, surface modification of MMO with ZIF-67 via-in situ growth is an effective strategy to develop high-performance photocatalysts for dye degradation.

异质结型光催化剂的设计为提高光催化效率提供了一条很有前途的途径。本研究的重点是合成和表征ZIF-67@mixed金属氧化物（ZIF-67@MMO）复合材料，研究ZIF-67掺入对其结构和光学性能的影响。采用共沉淀法，在Zn/Al摩尔比为2,3和4的条件下合成了znal -层状双氢氧化物（ZnAl-LDH），并在800℃下煅烧得到MMO。XRD分析表明，当Zn/Al比为3时，ZnO和ZnAl2O4尖晶石相最优。ZIF-67是一种钴基金属有机骨架，然后以5%、10%和15%的质量比在MMO表面原位生长。结构和光学表征证实，所有复合材料都保持了其晶体完整性，同时表现出降低的带隙能量，从而改善了光吸收和电荷分离。ZIF-67@MMO复合材料提高了电子-空穴转移效率，具有优异的光催化活性。MZ67-15%复合材料在添加15% ZIF-67的情况下，在120 min内几乎完全降解了靛蓝胭脂（IC）染料，一级速率常数为31.6 × 10−3 min−1，是纯MMO的6.7倍。因此，利用ZIF-67原位生长对MMO进行表面改性是开发高性能染料降解光催化剂的有效策略。

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引用次数: 0

Gemini surfactant and L-tyrosine derived luminescent ionic liquid crystals for effective iodine capture Gemini表面活性剂和l -酪氨酸衍生的发光离子液晶用于有效的碘捕获

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2026-04-01 Epub Date: 2026-01-03 DOI: 10.1016/j.mseb.2025.119174

Muhammad Bilal Ahmad , Rabia Arif , Arifa Shaheen , Ritu Bala

In this study, luminescent ionic liquid crystals (ILCs) composed of a gemini surfactant (16-3-16) and an amino acid L-tyrosine (L-Tyr) were rationally designed and synthesized for the efficient removal of hazardous iodine. The structural and bonding features of the synthesized [16-3-16]∙2Tyr ILCs were confirmed using FT-IR, ¹H NMR, ¹³C NMR, mass spectral, SAXS and XRD techniques. Confocal laser scanning microscopy (CLSM) and dynamic light scattering (DLS) revealed that the synthesized ILCs in aqueous solution exhibit strong green luminescence and self-assemble into multilayers and vesicles. The photoluminescence (PL) quantum yield of the [16-3-16]∙2Tyr ILCs was found to be 32.51 %. These ILCs exhibited exceptional iodine adsorption capacities of 3.29 ± 0.12 g g⁻¹ in the vapour phase and 1.728 ± 0.09 g g⁻¹ in solution. The adsorption kinetics follow a pseudo-second-order model, and the thermodynamic analysis confirms that the process is endothermic in nature. Remarkably, the material retained its performance over five reuse cycles following simple ethanol washing. The adsorption mechanism was elucidated through FT-IR, Raman spectroscopy, XPS and SEM-EDX techniques. The results suggest that iodine capture is primarily driven by charge transfer and strong acid-base interactions, facilitated by the aromatic nature of the ILCs, which enables the formation of stable iodine–π complexes. This study presents an innovative and recyclable ILC-based system for capturing iodine, offering a promising approach for environmental remediation applications.

本研究合理设计合成了由gemini表面活性剂（16-3-16）和氨基酸l -酪氨酸（L-Tyr）组成的发光离子液晶（ILCs），用于高效去除有害碘。采用FT-IR、1H NMR、13C NMR、质谱、SAXS和XRD等技术对合成的[16-3-16]∙2Tyr ILCs的结构和键合特征进行了表征。共聚焦激光扫描显微镜（CLSM）和动态光散射（DLS）结果表明，合成的ILCs在水溶液中表现出强烈的绿色发光，并自组装成多层和囊泡。结果表明，[16-3-16]∙2Tyr ILCs的光致发光量子产率为32.51%。这些ILCs在气相和溶液中分别表现出3.29±0.12 g g−1和1.728±0.09 g g−1的优异的碘吸附能力。吸附动力学符合准二阶模型，热力学分析证实了吸附过程的吸热性质。值得注意的是，在简单的乙醇洗涤后，该材料在重复使用五次后仍保持其性能。通过FT-IR、拉曼光谱、XPS和SEM-EDX等技术对其吸附机理进行了研究。结果表明，碘捕获主要由电荷转移和强酸碱相互作用驱动，并由ilc的芳香性质促进，从而形成稳定的碘-π配合物。本研究提出了一种创新的、可回收的基于ilc的碘捕获系统，为环境修复应用提供了一种有前途的方法。

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引用次数: 0

Magnetostructural properties of rare earth substituted strontium hexaferrites 稀土取代锶六铁体的磁结构性质

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2026-04-01 Epub Date: 2026-01-03 DOI: 10.1016/j.mseb.2026.119179

M.F. Ramírez-Ayala , A. Lobo Guerrero , Umapada Pal , J.L. Pérez-Mazariego , J. León-Flores , M.L. Marquina , F.R. Barrientos Hernández

M-type strontium hexaferrites, with partial substitution of Sr²⁺ by rare earth ions (RE³⁺ = La, Pr, Nd, Sm and Gd) were synthesized via the Pechini method, following the formula Sr_1-xRE_xFe₁₂O₁₉ (0.01 ≤ x ≤ 0.1). The influence of rare earth substitution on the structural, vibrational, and magnetic properties was systematically investigated using X-ray diffraction (XRD), Scanning electron microscopy, Fourier-transform infrared spectroscopy (FTIR), Vibrant sample magnetometry, and Mössbauer spectroscopy. XRD analysis confirmed the formation of a single-phase hexagonal M-type ferrite. Even at low RE³⁺ concentrations, notable variations were observed in lattice parameters. FTIR analysis revealed outstanding changes in metal‑oxygen stretching vibrations, particularly at tetrahedral sites, indicating the incorporation of rare earth ions. Mössbauer spectroscopy further confirmed RE incorporation and revealed notable alterations in hyperfine parameters at the 4f₁, 4f₂, and 2a sites, indicating changes in the local electronic and magnetic environments of Fe nuclei. In addition, morphology and magnetic properties were evaluated as a function of the rare earth substitution, highlighting the critical role of RE³⁺ dopants in tailoring the structural and magnetic behavior of strontium hexaferrites.

采用Pechini法合成了Sr2+被稀土离子（RE3+ = La, Pr, Nd， Sm和Gd）部分取代的m型锶六铁体，分子式为Sr1-xRExFe12O19（0.01≤x≤0.1）。采用x射线衍射（XRD）、扫描电镜（sem）、傅里叶变换红外光谱（FTIR）、动态样品磁强计（dsm）和Mössbauer光谱等方法系统地研究了稀土取代对结构、振动和磁性能的影响。XRD分析证实形成了单相六方m型铁氧体。即使在较低的RE3+浓度下，晶格参数也会发生显著变化。FTIR分析揭示了金属氧拉伸振动的显著变化，特别是在四面体位置，表明稀土离子的掺入。Mössbauer光谱进一步证实了RE的掺入，并揭示了4f1, 4f2和2a位点的超精细参数的显著变化，表明Fe原子核的局部电子和磁性环境发生了变化。此外，形貌和磁性能作为稀土取代的函数进行了评估，突出了RE3+掺杂剂在调整锶六铁体结构和磁性能方面的关键作用。

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引用次数: 0

Boron-induced amorphization in In2O3 enabling flexible transparent conductive films 硼诱导的In2O3非晶化使柔性透明导电薄膜成为可能

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2026-04-01 Epub Date: 2026-01-09 DOI: 10.1016/j.mseb.2026.119201

Shun Mori, Yuya Yasaki, Kanta Kibishi, Shinya Aikawa

We investigated the effects of boron concentration and post-deposition annealing temperature on the electrical properties of indium boron oxide (IBO), demonstrating a high-performance transparent conducting oxide film that rivals indium tin oxide (ITO), even when deposited at room temperature without any post-deposition annealing. Optimal performance was obtained at a boron content of 2.5 at.%, yielding a resistivity of 3.6 × 10⁻⁴ Ω cm, Hall mobility of 47.2 cm² V⁻¹ s⁻¹, and carrier density of 3.6 × 10²⁰ cm⁻³. Although the carrier concentration was comparable to that of non-doped In₂O₃, the mobility was notably enhanced. This improvement is attributed to the fact that boron, having the same valence as indium, does not introduce excess carriers, while its smaller ionic radius enhances the overlap of In 5 s orbitals, facilitating more efficient carrier transport. Because IBO is compatible with room-temperature processing, films were also deposited on poly(ethylene terephthalate) substrates to evaluate their potential as flexible transparent conductors in comparison with ITO. The increase in resistance under mechanical bending was less than one-third that of ITO, suggesting superior mechanical durability for IBO. This difference may originate from the highly amorphous nature of the IBO film. Furthermore, nanoindentation measurements revealed Young's moduli of 70.0 and 130.8 GPa for IBO and ITO, respectively, indicating that amorphous IBO possesses high mechanical flexibility, consistent with the bending resistance test results.

我们研究了硼浓度和沉积后退火温度对氧化铟硼（IBO）电学性能的影响，证明了即使在室温下沉积而不进行沉积后退火，也能获得与氧化铟锡（ITO）相媲美的高性能透明导电氧化膜。硼含量为2.5 at时性能最佳。%，电阻率为3.6 × 10−4 Ω cm，霍尔迁移率为47.2 cm2 V−1 s−1，载流子密度为3.6 × 1020 cm−3。虽然载流子浓度与未掺杂的In2O3相当，但迁移率明显提高。这一改进是由于硼与铟具有相同的价态，没有引入多余的载流子，而其较小的离子半径增强了In 5s轨道的重叠，促进了更有效的载流子传输。由于IBO与室温处理兼容，因此还将薄膜沉积在聚对苯二甲酸乙酯基板上，以与ITO相比，评估其作为柔性透明导体的潜力。机械弯曲下的阻力增加不到ITO的三分之一，表明IBO具有优异的机械耐久性。这种差异可能源于IBO薄膜的高度无定形性质。此外，纳米压痕测量结果显示，IBO和ITO的杨氏模量分别为70.0和130.8 GPa，表明非晶IBO具有较高的机械柔韧性，与抗弯曲测试结果一致。

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引用次数: 0

Sustainable biochar-MOF composites for the removal of tetracycline: Insights into batch and continuous studies 可持续生物炭- mof复合材料去除四环素：批量和连续研究的见解

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2026-04-01 Epub Date: 2026-01-08 DOI: 10.1016/j.mseb.2025.119150

Pooja Saini , Nandana Chakinala , Meena Chowdhary , Praveen K. Surolia , Anand Gupta Chakinala

This study focuses on the development of advanced biochar-based composite materials for the efficient removal of tetracycline (TC) from aqueous systems. Bread waste was repurposed as a sustainable biomass source to produce biochar, which was further modified with ZIF-67, a cobalt-based metal-organic framework (MOF), to enhance its adsorption performance. Two synthesis routes were employed: direct calcination to produce non-activated biochar (NAC) and chemical activation with potassium carbonate to produce activated biochar (AC). Batch adsorption studies revealed that NAC-30MOF exhibited the highest adsorption capacity, achieving nearly 100 % TC removal with a maximum capacity of 2033 mg⋅g⁻¹ and a BET surface area is 514.78 m²⋅g⁻¹ with a pore size of 3.83 nm. Adsorption kinetics were best described by the pseudo-second-order model (R² = 0.995), indicating chemisorption as the dominant mechanism. Thermodynamic analysis confirmed the endothermic and spontaneous nature of the adsorption process, with positive enthalpy (ΔH°) and entropy (ΔS°) values. Column studies demonstrated the superior performance of NAC-30MOF, with longer breakthrough and exhaustion times compared to AC and NAC, highlighting its potential for continuous water treatment applications. Additionally, NAC-30MOF retained excellent reusability, maintaining nearly 100 % removal efficiency over three adsorption-desorption cycles. This work highlights the effectiveness of MOF-modified biochar composites, particularly NAC-30MOF, as cost-effective and sustainable adsorbents for water treatment. The integration of biochar with MOFs significantly enhances adsorption capacity and efficiency, offering a promising approach to the development of advanced materials for environmental remediation.

本研究的重点是开发先进的生物炭基复合材料，以有效地去除水中的四环素。利用面包垃圾作为可持续生物质来源生产生物炭，并进一步用钴基金属有机骨架（MOF） ZIF-67改性生物炭，以提高其吸附性能。采用直接煅烧法制备非活性生物炭（NAC）和碳酸钾化学活化法制备活性生物炭（AC）两种合成路线。批吸附研究表明，NAC-30MOF的吸附量最高，最大吸附量为2033 mg⋅g−1，对TC的去除率接近100%，BET表面积为514.78 m2⋅g−1，孔径为3.83 nm。拟二阶吸附动力学模型（R2 = 0.995）表明化学吸附是主要吸附机理。热力学分析证实了吸附过程的吸热和自发性质，焓值（ΔH°）和熵值（ΔS°）为正。柱状研究表明，NAC- 30mof具有优异的性能，与AC和NAC相比，突破和耗尽时间更长，突出了其在连续水处理应用中的潜力。此外，NAC-30MOF保留了出色的可重复使用性，在三个吸附-解吸循环中保持了近100%的去除效率。这项工作强调了mof改性生物炭复合材料的有效性，特别是NAC-30MOF，作为一种具有成本效益和可持续的水处理吸附剂。生物炭与mof的结合显著提高了吸附能力和效率，为开发先进的环境修复材料提供了一条有前景的途径。

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引用次数: 0

Unraveling broadened spectral response in 2D quantum dot solar cells via Sb2Se3/CaZrS3 dual chalcogenide absorbers: Insights from SCAPS-1D 通过Sb2Se3/CaZrS3双硫族吸收剂揭示二维量子点太阳能电池的宽光谱响应：来自SCAPS-1D的见解

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2026-04-01 Epub Date: 2026-01-19 DOI: 10.1016/j.mseb.2026.119216

Smriti Baruah , Janmoni Borah

This work presents an optimized dual chalcogenide perovskite absorber-based quantum dot solar cell (QD-CPSC) configuration, emphasizing the impact of bandgap engineering, layer thickness, dopant concentration, and defect density on both absorbers and quantum dot charge collection layers. Antimony Selenide (Sb₂Se₃) and Calcium Zirconium Trisulfide (CaZrS₃) absorbers were coupled with two-dimensional (2D) quantum dot Tungsten disulfide (WS₂), Copper Oxide (Cu₂O), and Molybdenum oxide (MoO_x) quantum dot electron and hole collection layers, achieving ideal energy band alignment that enhances optoelectronic conversion efficiency (OECE) and broadens spectral response. At a cumulative dual absorber width of 1.2 μm, 0.01 μm for each quantum dot charge collection layer, and uniform defect density of 10¹⁶ cm⁻³, the proposed FTO/WS₂/CaZrS₃/Sb₂Se₃/Cu₂O/MoOx/Au dual absorber device configuration attains a peak optoelectronic conversion (OECE) of 33.16%, short circuit current density (J_sc) of 34 mA/cm², open circuit voltage (V_oc) of 1.36 V and fill factor (FF) of 86%.This surpasses the 13.1% and 27% of OECE,11.5 mA/cm² and 31.5 mA/cm² of J_sc, 1.36 V and 1.046 V of Voc 83.8% and 84% of FF attained by CaZrS₃ and Sb₂Se₃ single-absorber counterparts. The proposed dual-absorber QD- CPSC extends the spectral response to 1100 nm with 90% quantum efficiency, outperforming the CaZrS₃ single-absorber chalcogenide solar cell (CSC) limit of 700 nm. While Sb₂Se₃ single-absorber CPSC achieves a comparable spectral range to the proposed dual absorber configuration, its quantum efficiency is lower at 55.5%. Temperature-dependent analyses revealed exceptional thermal stability, preserving its efficiency up to 31% even under elevated temperatures of 400 K.

本文提出了一种优化的基于双硫系钙钛矿吸收剂的量子点太阳能电池（QD-CPSC）结构，强调了带隙工程、层厚度、掺杂剂浓度和缺陷密度对吸收剂和量子点电荷收集层的影响。硒化锑（Sb2Se3）和三硫化锆钙（CaZrS3）吸收剂与二维（2D）量子点二硫化钨（WS2）、氧化铜（Cu2O）和氧化钼（MoOx）量子点电子和空穴收集层耦合，实现了理想的能带排列，提高了光电转换效率（OECE），拓宽了光谱响应。在累积双吸收体宽度为1.2 μm，每个量子点电荷收集层为0.01 μm，均匀缺陷密度为1016 cm−3的情况下，所提出的FTO/WS2/CaZrS3/Sb2Se3/Cu2O/MoOx/Au双吸收体器件结构的峰值光电转换（OECE）为33.16%，短路电流密度（Jsc）为34 mA/cm2，开路电压（Voc）为1.36 V，填充因子（FF）为86%。这超过了CaZrS3和Sb2Se3单吸收剂分别达到的OECE的13.1%和27%，Jsc的11.5 mA/cm2和31.5 mA/cm2， Voc的1.36 V和1.046 V， FF的83.8%和84%。所提出的双吸收体QD- CPSC将光谱响应扩展到1100 nm，量子效率为90%，优于CaZrS3单吸收体硫系太阳能电池（CSC） 700 nm的极限。虽然Sb2Se3单吸收体CPSC的光谱范围与所提出的双吸收体结构相当，但其量子效率较低，为55.5%。与温度相关的分析显示出优异的热稳定性，即使在400k的高温下，其效率也保持在31%。

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引用次数: 0

Effect of Bi/V ratio in the precursor on structural, optical, and photovoltaic properties of bismuth vanadium oxide thin films by spin coating 前驱体中Bi/V比对自旋镀膜氧化铋钒薄膜结构、光学和光伏性能的影响

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2026-04-01 Epub Date: 2026-01-21 DOI: 10.1016/j.mseb.2026.119231

Dev Bahadur Khadka , Suresh Sagadevan , Md Arif Ul Islam , Shinya Kato , Tetsuo Soga

Bismuth vanadate (BiVO₄) is an n-type semiconductor of bismuth-based oxide perovskite nature, characterized by a relatively low bandgap of (2.2–2.5) eV. This material is primarily explored in photoanodes, electrodes, and photocatalysis phenomena. Nanostructures, greater availability, and a stable nature of BiVO₄ have been demonstrated significantly in recent studies. The surface morphology, structure, optical properties, and electrical properties are considered for the effect of the bismuth to vanadium ratio in the precursor solutions. A simple and time-efficient spin coating at a moderate speed was used to synthesize the thin films. In our study, a low Bi/V ratio results in a single layer of BiVO₄; however, a higher Bi/V ratio exhibits a heterostructure of BiVO₄ and Bi₄V₂O₁₁ by a single spin coating.Further increasing the Bi/V ratio yields almost a single layer of Bi₄V₂O₁₁. The open circuit voltage is increased from 0.39 V at the single-phase BiVO₄ to nearly twofold, 0.63 V with BiVO₄/Bi₄V₂O₁₁ heterostructure due to ferroelectric properties. Interestingly, the existence of BiVO₄ on Bi₄V₂O₁₁ promoted an additional voltage to the open circuit voltage, exhibiting a small remanent voltage.

钒酸铋（Bismuth vanadate, BiVO4）是一种铋基氧化物钙钛矿性质的n型半导体，具有（2.2 ~ 2.5）eV的较低带隙。这种材料主要在光阳极、电极和光催化现象中进行探索。在最近的研究中，BiVO4的纳米结构、更高的可用性和稳定性得到了显著的证明。研究了铋钒比对前驱体溶液表面形貌、结构、光学性质和电学性质的影响。采用一种简单、省时的中速自旋镀膜方法合成薄膜。在我们的研究中，低Bi/V比导致单层BiVO4；而当Bi/V比较高时，单次自旋涂层呈现出BiVO4和Bi4V2O11的异质结构。进一步提高Bi/V比，可以得到几乎单层的Bi4V2O11。由于铁电特性，BiVO4/Bi4V2O11异质结构的开路电压从单相BiVO4的0.39 V提高到近两倍的0.63 V。有趣的是，BiVO4在Bi4V2O11上的存在促进了开路电压的附加电压，表现出很小的剩余电压。

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引用次数: 0

Comments on “tuning electrical conductivity in lithium-doped sodium titanate via sonochemical synthesis” “通过声化学合成调整掺锂钛酸钠的电导率”评述

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2026-04-01 Epub Date: 2026-01-19 DOI: 10.1016/j.mseb.2026.119218

Tosapol Maluangnont

da Silva et al. (Mater. Sci. Eng. B 323 (2026) 118836) recently reported the sonochemical synthesis of lithium-doped sodium titanate Na_2-xLi_xTi₃O₇ (x = 0, 0.01, 0.02 and 0.03). They proposed three-phase products: (i) lithium-doped Na_2-xLi_xTi₃O₇ with the layered structure, (ii) undoped Na₂Ti₆O₁₃ with tunnel structure, and (iii) the NaLiTi₃O₇ impurity (at high x). It is argued that that the formation of Na_2-xLi_xTi₃O₇ is unlikely. Two major products could be assigned as undoped Na₂Ti₃O₇ and undoped Na₂Ti₆O₁₃. Also, the NaLiTi₃O₇ impurity (which has completely different structure from the layered alkali titanate) could be the structurally related Li₄Ti₅O₁₂ spinel. The present interpretation can explain the invariant unit cell parameters, the decrease of optical band gap, and the improvement of electrical conductivity observed by the original authors.

达席尔瓦等人。科学。Eng。b323(2026) 118836)最近报道了声化学合成掺锂钛酸钠Na2-xLixTi3O7 （x = 0,0.01, 0.02和0.03）。他们提出了三相产物：(i)具有层状结构的锂掺杂Na2-xLixTi3O7，（ii）具有隧道结构的未掺杂Na2Ti6O13，以及（iii） NaLiTi3O7杂质（高x）。认为Na2-xLixTi3O7不可能形成。两种主要产物分别为未掺杂的Na2Ti3O7和未掺杂的Na2Ti6O13。与层状碱钛酸盐结构完全不同的NaLiTi3O7杂质可能是与Li4Ti5O12尖晶石结构相关的。本文的解释可以解释原作者观察到的单元胞参数不变、光学带隙减小、电导率提高等现象。

{"title":"Comments on “tuning electrical conductivity in lithium-doped sodium titanate via sonochemical synthesis”","authors":"Tosapol Maluangnont","doi":"10.1016/j.mseb.2026.119218","DOIUrl":"10.1016/j.mseb.2026.119218","url":null,"abstract":"<div><div>da Silva et al. (Mater. Sci. Eng. B 323 (2026) 118836) recently reported the sonochemical synthesis of lithium-doped sodium titanate Na2-xLixTi3O7 (x = 0, 0.01, 0.02 and 0.03). They proposed three-phase products: (i) lithium-doped Na2-xLixTi3O7 with the layered structure, (ii) undoped Na2Ti6O13 with tunnel structure, and (iii) the NaLiTi3O7 impurity (at high x). It is argued that that the formation of Na2-xLixTi3O7 is unlikely. Two major products could be assigned as undoped Na2Ti3O7 and undoped Na2Ti6O13. Also, the NaLiTi3O7 impurity (which has completely different structure from the layered alkali titanate) could be the structurally related Li4Ti5O12 spinel. The present interpretation can explain the invariant unit cell parameters, the decrease of optical band gap, and the improvement of electrical conductivity observed by the original authors.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"326 ","pages":"Article 119218"},"PeriodicalIF":4.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146023491","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}

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