Materials Science in Semiconductor Processing最新文献

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New insights in vertical GaN-on-GaN Schottky diode by Raman, cathodoluminescence and electrical characterizations 垂直GaN-on-GaN肖特基二极管的拉曼、阴极发光和电学表征新见解
IF 4.2 3区 工程技术
Materials Science in Semiconductor Processing Pub Date : 2025-06-05 DOI: 10.1016/j.mssp.2025.109681
Vishwajeet Maurya , Daniel Alquier , Maroun Dagher , Camille Sonneville , Dominique Planson , Hala El Rammouz , Thomas Kaltsounis , Eric Frayssinet , Yvon Cordier , Nevine Rochat , Matthew Charles , Julien Buckley
{"title":"New insights in vertical GaN-on-GaN Schottky diode by Raman, cathodoluminescence and electrical characterizations","authors":"Vishwajeet Maurya ,&nbsp;Daniel Alquier ,&nbsp;Maroun Dagher ,&nbsp;Camille Sonneville ,&nbsp;Dominique Planson ,&nbsp;Hala El Rammouz ,&nbsp;Thomas Kaltsounis ,&nbsp;Eric Frayssinet ,&nbsp;Yvon Cordier ,&nbsp;Nevine Rochat ,&nbsp;Matthew Charles ,&nbsp;Julien Buckley","doi":"10.1016/j.mssp.2025.109681","DOIUrl":"10.1016/j.mssp.2025.109681","url":null,"abstract":"<div><div>This article compares the impact of different freestanding GaN substrates on the material and electrical properties of Schottky diodes. Material characterization using cathodoluminescence and Raman spectroscopy was performed to analyze defects in the wafers. Randomly distributed clusters of dislocations were observed in one sample, whereas the other sample was free of such clusters. Schottky diodes were subsequently fabricated on these wafers and electrically characterized to investigate the influence of material characteristics on key device parameters, including barrier height, ideality factor, on-resistance, leakage current, and breakdown voltage. A lower barrier height, higher ideality factor, and lower breakdown voltage were observed in the sample with clusters.</div></div>","PeriodicalId":18240,"journal":{"name":"Materials Science in Semiconductor Processing","volume":"198 ","pages":"Article 109681"},"PeriodicalIF":4.2,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144212662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
High temperature resistance and wide-spectrum detection flexible photodetectors based on PbS quantum dots/Bi2S3 nanorods 基于PbS量子点/Bi2S3纳米棒的耐高温广谱探测柔性光电探测器
IF 4.2 3区 工程技术
Materials Science in Semiconductor Processing Pub Date : 2025-06-05 DOI: 10.1016/j.mssp.2025.109738
Shenjiali Wang , Jian Wen , Luwei Feng , Xiaozhan Yang
{"title":"High temperature resistance and wide-spectrum detection flexible photodetectors based on PbS quantum dots/Bi2S3 nanorods","authors":"Shenjiali Wang ,&nbsp;Jian Wen ,&nbsp;Luwei Feng ,&nbsp;Xiaozhan Yang","doi":"10.1016/j.mssp.2025.109738","DOIUrl":"10.1016/j.mssp.2025.109738","url":null,"abstract":"<div><div>High temperature resistance and broadband detection are crucial in the application of flexible photodetectors, and it is still challenging to achieve high quality performance using low-cost and simple fabrication methods. To widen the spectral response range and improve the photoperformance, a photoconductive PbS quantum dots (QDs)/Bi<sub>2</sub>S<sub>3</sub> flexible photodetector was fabricated through physical vapor deposition and drop-coating processes on a flexible polyimide. This design is due to the excellent photoresponse of Bi<sub>2</sub>S<sub>3</sub> in the ultraviolet and visible regions, and the remarkable tunability and respond of PbS QDs in the infrared band. The device has a broadband photoresponse under 365–1550 nm. The device has the maximum responsivity (<em>R</em>) of 3.59 mA/W and detectivity (<em>D∗</em>) of 4.34 × 10<sup>10</sup> Jones under 638 nm illumination with a light intensity of 0.6 mW/cm<sup>2</sup>. And the response/recovery times are 0.35 s/0.45 s. The device exhibits excellent photoperformance even after multiple bends. When bent by 55 %, the photocurrent remains over 94 % of the initial value. Compared to Bi<sub>2</sub>S<sub>3</sub> devices, PbS QDs/Bi<sub>2</sub>S<sub>3</sub> flexible photodetectors have a 220-fold increase in on/off ratio. Moreover, the device can operate normally at 180 °C, demonstrating excellent temperature resistance characteristics. This work offers a new approach for designing high-performance flexible electronic devices with high temperature resistance and broadband response.</div></div>","PeriodicalId":18240,"journal":{"name":"Materials Science in Semiconductor Processing","volume":"198 ","pages":"Article 109738"},"PeriodicalIF":4.2,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Size evolution of silver nanowires under thermal field and its application in nano-healing: A molecular dynamics study 热场下银纳米线的尺寸演化及其在纳米愈合中的应用:分子动力学研究
IF 4.2 3区 工程技术
Materials Science in Semiconductor Processing Pub Date : 2025-06-03 DOI: 10.1016/j.mssp.2025.109743
Yu Shu , Hui Wan , Hao Cao , Chengqun Gui , Shuo Chen , Deming Wang
{"title":"Size evolution of silver nanowires under thermal field and its application in nano-healing: A molecular dynamics study","authors":"Yu Shu ,&nbsp;Hui Wan ,&nbsp;Hao Cao ,&nbsp;Chengqun Gui ,&nbsp;Shuo Chen ,&nbsp;Deming Wang","doi":"10.1016/j.mssp.2025.109743","DOIUrl":"10.1016/j.mssp.2025.109743","url":null,"abstract":"<div><div>Laser-induced nano-healing plays a pivotal role in repairing structural defects in devices, primarily attributed to localized thermal fields generated by photothermal effects, which reduce nanogap sizes. However, the phenomenon of nanomaterial contraction into spheres under thermal fields indicates that the underlying mechanisms of nano-healing under thermal influence remain incompletely understood. This study employs molecular dynamics simulations to investigate the size evolution of silver nanowires under thermal fields, aiming to explore the effects of temperature on nanomaterial size changes and to further elucidate the mechanisms of nano-healing applications. The findings reveal that temperatures during the surface melting phase, below the melting point, promote the attainment of larger axial sizes in silver nanowires. The axial dimensions of silver nanowires are influenced not only by temperature-induced lattice spacing but also by the transport of atoms toward the central regions of end faces driven by surface melting. The study demonstrates that temperatures during the surface melting phase are more favorable for the healing of nanogaps, with higher temperatures enhancing the surface diffusion healing of nanoscale pits. These results provide valuable insights into the utilization of thermal fields for nano-healing and the subsequent repair of device defects.</div></div>","PeriodicalId":18240,"journal":{"name":"Materials Science in Semiconductor Processing","volume":"198 ","pages":"Article 109743"},"PeriodicalIF":4.2,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144195825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Enhanced luminescent intensity and the thermometric properties of Ag and Pd-decorated YVO4: Bi3+ nanophosphors Ag和pd修饰的YVO4: Bi3+纳米荧光粉的发光强度和测温性能
IF 4.2 3区 工程技术
Materials Science in Semiconductor Processing Pub Date : 2025-06-03 DOI: 10.1016/j.mssp.2025.109745
Lesole A. Ramolise, Simon N. Ogugua, Hendrik C. Swart, David E. Motaung
{"title":"Enhanced luminescent intensity and the thermometric properties of Ag and Pd-decorated YVO4: Bi3+ nanophosphors","authors":"Lesole A. Ramolise,&nbsp;Simon N. Ogugua,&nbsp;Hendrik C. Swart,&nbsp;David E. Motaung","doi":"10.1016/j.mssp.2025.109745","DOIUrl":"10.1016/j.mssp.2025.109745","url":null,"abstract":"<div><div>In this study, we report on the synthesis and comprehensive characterization of Y<sub>0.99</sub>VO<sub>4</sub>:0.01Bi<sup>3+</sup> nanophosphors decorated with different concentrations of Ag and Pd nanoparticles. X-ray diffraction analysis confirmed that all the samples crystallized in the pure tetragonal YVO<sub>4</sub> phase. Field emission scanning electron microscopy images revealed monodispersed spherical particles with uniform size distribution. Photoluminescent excitation spectra exhibited a broad band with a maximum of 306 nm, while the emission spectra displayed a broad yellow band at 567 nm. Notably, the effects of noble metal decorations were observed, with both 1 mol% Ag/Y<sub>0.99</sub>VO<sub>4</sub>:0.01Bi<sup>3+</sup> and 0.5 mol% Pd/Y<sub>0.99</sub>VO<sub>4</sub>:0.01Bi<sup>3+</sup> samples demonstrating luminescent intensities approximately two-fold and three-fold higher than the undecorated Y<sub>0.99</sub>VO<sub>4</sub>:0.01Bi<sup>3+</sup>, respectively. The Pd-decorated sample exhibited a maximum relative sensitivity of 2.0 % °C<sup>−1</sup> at 149 °C, while the Ag-decorated sample showed a sensitivity of 1.75 % °C<sup>−1</sup> at 92 °C and 1.23 % °C<sup>−1</sup> at room temperature (∼27 °C). These findings underscore the potential of metal-decorated Y<sub>0.99</sub>VO<sub>4</sub>:0.01Bi<sup>3+</sup> nanophosphors for imaging applications.</div></div>","PeriodicalId":18240,"journal":{"name":"Materials Science in Semiconductor Processing","volume":"198 ","pages":"Article 109745"},"PeriodicalIF":4.2,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144205341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Investigations on HfO2/n-GaAs(110) interface, in-situ obtained by Oxide-MBE 氧化物- mbe原位获得的HfO2/n-GaAs(110)界面研究
IF 4.2 3区 工程技术
Materials Science in Semiconductor Processing Pub Date : 2025-06-03 DOI: 10.1016/j.mssp.2025.109746
Constantin Catalin Negrila , Costel Cotirlan , Alexandru-Cristi Iancu , Dana Georgeta Popescu , Catalin Palade , Lucian Trupina
{"title":"Investigations on HfO2/n-GaAs(110) interface, in-situ obtained by Oxide-MBE","authors":"Constantin Catalin Negrila ,&nbsp;Costel Cotirlan ,&nbsp;Alexandru-Cristi Iancu ,&nbsp;Dana Georgeta Popescu ,&nbsp;Catalin Palade ,&nbsp;Lucian Trupina","doi":"10.1016/j.mssp.2025.109746","DOIUrl":"10.1016/j.mssp.2025.109746","url":null,"abstract":"<div><div>Hafnium oxide (HfO<sub>2</sub>) thin films were deposited on n-type gallium arsenide (GaAs) substrates by Oxide-Molecular Beam Epitaxy (Oxide-MBE) method using Hafnium (Hf) metallic flow in an oxidizing atmosphere of 10<sup>-6</sup> mbar molecular oxygen. The Hf metallic flow was provided by an e-beam evaporator and a deposition rate of ∼ 10 nm/h was established. Semiconductor surface preparation was done prior to deposition, beginning with chemical wet etching and aggressively adjusted by in-situ treatments until a desired stoichiometry was reached. Heterojunctions with HfO<sub>2</sub> thin layers of 1 nm, 3 nm, 10 nm and 20 nm were fabricated. X-Ray Photoelectron Spectroscopy (XPS) and ARXPS(Angle Resolved XPS) in-situ analyses provided a clear picture of the structure of the interfaces, the chemical bonds and their composition. The interfaces are chemically stable and abrupt. A small amount of Ga<sub>2</sub>O<sub>3</sub> provides a passivating effect of the semiconductor surface. The electrical properties of the heterostructures were determined using the Kraut method and Reflection Electron Energy Loss Spectroscopy (REELS) technique. Band offsets of ΔE<sub>C</sub>=1.75 eV and ΔE<sub>V</sub>=2.62 eV confirm a high application potential. Additionally, data on the morphology and continuity of the layers were obtained by Atomic Force Microscopy (AFM) technique while the amorphous growth was monitored by XRD(X-ray Diffraction), GIXRD (Grazing Incidence XRD) and XRR(X-ray Reflectivity) measurements. The dielectric layers showed values of the constant k in the range of 19-22, established by electrical measurements on MOS type capacitors.</div></div>","PeriodicalId":18240,"journal":{"name":"Materials Science in Semiconductor Processing","volume":"198 ","pages":"Article 109746"},"PeriodicalIF":4.2,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144205342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
An adaptive near-infrared photodetector for depth sensing and real-time gesture recognition 用于深度传感和实时手势识别的自适应近红外光电探测器
IF 4.2 3区 工程技术
Materials Science in Semiconductor Processing Pub Date : 2025-06-03 DOI: 10.1016/j.mssp.2025.109734
Mohit Kumar , Hyunmin Dang , Hyungtak Seo
{"title":"An adaptive near-infrared photodetector for depth sensing and real-time gesture recognition","authors":"Mohit Kumar ,&nbsp;Hyunmin Dang ,&nbsp;Hyungtak Seo","doi":"10.1016/j.mssp.2025.109734","DOIUrl":"10.1016/j.mssp.2025.109734","url":null,"abstract":"<div><div>The rapid evolution of real-time, energy-efficient sensing technologies is paramount for innovations in fields such as 3D imaging, gesture recognition, and human-machine interaction. However, conventional photodetectors are limited by their slow response to sudden changes in light and high-power consumption during continuous monitoring, while event sensors excel in detecting instantaneous changes but are ineffective at capturing gradual intensity shifts. To address these critical limitations, we present a ‘<em>hybrid’</em> near-infrared (NIR) Au/Ga<sub>2</sub>O<sub>3</sub>/<em>n</em>-Si/Au photodetector, designed to simultaneously detect both instantaneous events and gradual light intensity variations. Our single-pixel NIR photodetector leverages capacitance changes for rapid event detection and photocurrent generation at the junction to monitor continuous light variations. This dual-functionality architecture allows for real-time adaptability in dynamic and static environments. We further demonstrate its capability in real-time z-distance sensing, integrating a deep neural network for precise depth measurements. Additionally, the hybrid single-pixel photodetector facilitates real-time sign language recognition, translating gestures into word, thereby offering a new paradigm in human-machine interaction. By bridging the gap between traditional and event-based sensors, this hybrid NIR device not only meets the demands of next-generation sensing technologies but also redefines the potential for innovation in the fields, such as in object classification, gesture recognition, and beyond.</div></div>","PeriodicalId":18240,"journal":{"name":"Materials Science in Semiconductor Processing","volume":"198 ","pages":"Article 109734"},"PeriodicalIF":4.2,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144205343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Wrinkled PDMS/MXene composites: A pathway to high-efficiency triboelectric nanogenerators 皱褶PDMS/MXene复合材料:高效摩擦电纳米发电机的途径
IF 4.2 3区 工程技术
Materials Science in Semiconductor Processing Pub Date : 2025-06-03 DOI: 10.1016/j.mssp.2025.109739
K. Aiswarya , Madathil Navaneeth , Lakshakoti Bochu , Prakash Kodali , Rajaboina Rakesh Kumar , Siva Kumar Reddy
{"title":"Wrinkled PDMS/MXene composites: A pathway to high-efficiency triboelectric nanogenerators","authors":"K. Aiswarya ,&nbsp;Madathil Navaneeth ,&nbsp;Lakshakoti Bochu ,&nbsp;Prakash Kodali ,&nbsp;Rajaboina Rakesh Kumar ,&nbsp;Siva Kumar Reddy","doi":"10.1016/j.mssp.2025.109739","DOIUrl":"10.1016/j.mssp.2025.109739","url":null,"abstract":"<div><div>The increased demand for sustainable and green energy harvesting technologies has led to significant progress in triboelectric nanogenerators (TENGs) technology. However, conventional TENGs have drawbacks that limit their practical use, such as low power output, poor surface contact, and restricted charge production. The majority of problems come from the triboelectric layers' intrinsic smoothness of the surfaces, which lowers the effective contact area, resulting in poor performance of the TENGs. Surface engineering strategies have been explored to overcome this challenge and enhance charge transfer and TENG performance. In the present work, we present a wrinkled PDMS/MXene composite-based TENG, where the introduction of microstructured wrinkles on the surface effectively enhances contact electrification and TENG performance. The surface engineering of triboelectric layer was achieved using simple sandpaper in the present work. A comparative analysis between wrinkled and non-wrinkled PDMS/MXene composites was conducted, revealing that the wrinkled structure significantly amplifies the triboelectric output. The optimized device, incorporating 6 wt% MXene in PDMS, achieved an impressive open-circuit voltage of ∼790 V and short-circuit current of 140 μA, outperforming its non-wrinkled pure PDMS counterpart by 3.2 and 7 times in voltage and current, respectively. Additionally, a peak power density of 17.10 W/m<sup>2</sup> was attained at an optimal load resistance of 5 MΩ, demonstrating its capability for efficient energy conversion. Finally, the prepared TENG is used to power LEDs and LED lamps, and it is also investigated for a self-powered weighing machine application.</div></div>","PeriodicalId":18240,"journal":{"name":"Materials Science in Semiconductor Processing","volume":"198 ","pages":"Article 109739"},"PeriodicalIF":4.2,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144196343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Role of hole transport layers in normal and inverted bulk heterojunction organic solar cells: A light intensity dependent capacitance-voltage analysis 正反体异质结有机太阳能电池中空穴传输层的作用:光强相关的电容电压分析
IF 4.2 3区 工程技术
Materials Science in Semiconductor Processing Pub Date : 2025-06-03 DOI: 10.1016/j.mssp.2025.109736
Shailendra Kumar Gupta , Durgesh C. Tripathi , Amit Kumar , Neha Garg , Chinmay K. Gupta , Vandana Yadav , Sandeep Sharma , Sanjeev Kumar , Ashish Garg
{"title":"Role of hole transport layers in normal and inverted bulk heterojunction organic solar cells: A light intensity dependent capacitance-voltage analysis","authors":"Shailendra Kumar Gupta ,&nbsp;Durgesh C. Tripathi ,&nbsp;Amit Kumar ,&nbsp;Neha Garg ,&nbsp;Chinmay K. Gupta ,&nbsp;Vandana Yadav ,&nbsp;Sandeep Sharma ,&nbsp;Sanjeev Kumar ,&nbsp;Ashish Garg","doi":"10.1016/j.mssp.2025.109736","DOIUrl":"10.1016/j.mssp.2025.109736","url":null,"abstract":"<div><div>In organic solar cells (OSC) hole transport layers (HTL) are essential for boosting the power conversion efficiency (PCE); therefore, it is crucial to determine the underlying mechanisms. In the present manuscript, we report a study that examines the effects of two HTL such as PEDOT:PSS and MoO<sub>3</sub>, on the electrical characteristics of P3HT:PC<sub>61</sub>BM (active layer) based bulk heterojunction (BHJ) in normal (ITO/PEDOT:PSS/P3HT:PCBM/Al) and inverted (ITO/ZnO/P3HT:PCBM/MoO<sub>3</sub>/Ag) configurations. Current density-voltage (<em>J-V</em>) and illumination intensity dependent capacitance-voltage (<em>C-V)</em> measurements have been performed and compared for with and without HTL (PEDOT:PSS in normal and MoO<sub>3</sub> in inverted) devices. Results suggest that the extracted photovoltaic parameters (short circuit current density (<em>J</em><sub><em>sc</em></sub>), open circuit voltage (<em>V</em><sub><em>oc</em></sub>) and fill factor (<em>FF</em>)) of HTL containing devices are superior to without HTL devices in both normal and inverted OSC, due to unfavourable charge carrier accumulation and band bending in HTL free devices. Such charge build-up at active layer/anode interface generates photovoltage contributing as loss factor to PCE and has been investigated in <em>C-V</em> characteristics measured under varied illumination intensities (0/dark, 50 and 100 mWcm<sup>−2</sup>). Parameters such as built-in-voltage (V<sub><em>bi</em></sub>), effective built-in-voltage (V<sub><em>bi, eff</em></sub>), accumulated carrier concentration and surface photovoltage (V<sub><em>spv</em></sub> = V<sub><em>bi, eff</em></sub> - V<sub><em>bi</em></sub>) are extracted as a function of illumination intensity. Our findings reveal that HTL free devices, in both conventional and inverted OSCs structures, marked with low J<sub>sc</sub>, V<sub>oc</sub> and FF values generate higher <em>SPV</em>. The <em>SPV</em> calculation method used here has been proven to be crucial in recommending a suitable HTL for OSC device architectures.</div></div>","PeriodicalId":18240,"journal":{"name":"Materials Science in Semiconductor Processing","volume":"198 ","pages":"Article 109736"},"PeriodicalIF":4.2,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144205344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
In-situ hydrothermal synthesis of Bi2S3 nanoribbons to construct Bi2S3/BiVO4/TiO2 composite films with 96.1 % Cr(VI) reduction 原位水热合成Bi2S3纳米带构建Bi2S3/BiVO4/TiO2复合膜,Cr(VI)还原率为96.1%
IF 4.2 3区 工程技术
Materials Science in Semiconductor Processing Pub Date : 2025-06-03 DOI: 10.1016/j.mssp.2025.109740
Xinli Li, Hongwei Wang, Yuan Cheng, Pengyu Zhang, Minghui Tan, Renhong Yu, Yunfei Zang, Zhiping Mao
{"title":"In-situ hydrothermal synthesis of Bi2S3 nanoribbons to construct Bi2S3/BiVO4/TiO2 composite films with 96.1 % Cr(VI) reduction","authors":"Xinli Li,&nbsp;Hongwei Wang,&nbsp;Yuan Cheng,&nbsp;Pengyu Zhang,&nbsp;Minghui Tan,&nbsp;Renhong Yu,&nbsp;Yunfei Zang,&nbsp;Zhiping Mao","doi":"10.1016/j.mssp.2025.109740","DOIUrl":"10.1016/j.mssp.2025.109740","url":null,"abstract":"<div><div>With the rapid industrialization deteriorating heavy metal water pollution, photocatalytic technology has emerged as a promising solution. In this study, a novel in-situ hydrothermal technique enabled the integration of Bi<sub>2</sub>S<sub>3</sub> nanoribbons and BiVO<sub>4</sub> particles with TiO<sub>2</sub> forming a stable Bi<sub>2</sub>S<sub>3</sub>/BiVO<sub>4</sub>/TiO<sub>2</sub> composite film, and utilized sulfur (S) source concentration to regulate Bi<sub>2</sub>S<sub>3</sub> morphology to enhance photocatalytic property of TiO<sub>2</sub>. The results show that with the introduction of S source, the morphology of Bi<sub>2</sub>S<sub>3</sub> showed obvious evolution law. Under the low concentration of S source (1 mmol), Bi<sub>2</sub>S<sub>3</sub> formed nanospines, evolving into nanoribbons (3,5 mmol) and nanosheets (7 mmol), with agglomeration observed at 10 mmol. When the amount of S source was 5 mmol (SVT-5), Bi<sub>2</sub>S<sub>3</sub> nanoribbons was the most suitable morphology, and exhibited enhanced visible-light absorption and the narrowest bandgap (2.76 eV). SVT-5 demonstrated superior photoelectrochemical property: highest photocurrent density, lowest impedance, maximum carrier concentration, and prolonged carrier lifetime (15.2 ms). Under simulated solar light, SVT-5 achieved a reduction efficiency of 96.1 % and a reduction rate of 0.0336 min<sup>−1</sup> for 5 mg/L Cr(VI) after 100 min, outperforming TiO<sub>2</sub> and BiVO<sub>4</sub>/TiO<sub>2</sub>. Additionally, SVT-5 maintained 90 % efficiency after four cycles, highlighting its stability. This work provides a morphology-regulation strategy to enhance TiO<sub>2</sub>-based photocatalysts, offering a viable approach for heavy metal wastewater treatment and advancing applications in optoelectronics and environmental remediation.</div></div>","PeriodicalId":18240,"journal":{"name":"Materials Science in Semiconductor Processing","volume":"198 ","pages":"Article 109740"},"PeriodicalIF":4.2,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144195826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
N-doped graphene-like coating for improved microcapacitance of nanoporous silicon 改进纳米多孔硅微电容的n掺杂类石墨烯涂层
IF 4.2 3区 工程技术
Materials Science in Semiconductor Processing Pub Date : 2025-06-03 DOI: 10.1016/j.mssp.2025.109741
Daria M. Sedlovets , Vitaly V. Starkov , Vassa V. Ulianova
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