Applied Physics A最新文献_第6页

Structural, electronic, and magnetic characteristics of Cd0.5Ni0.5TiO3: a perovskite compound

IF 2.5 4区材料科学

Applied Physics A Pub Date : 2025-02-10 DOI: 10.1007/s00339-025-08317-0

Senthilkumar C, Winfred Shashikanth F

{"title":"Structural, electronic, and magnetic characteristics of Cd0.5Ni0.5TiO3: a perovskite compound","authors":"Senthilkumar C, Winfred Shashikanth F","doi":"10.1007/s00339-025-08317-0","DOIUrl":"10.1007/s00339-025-08317-0","url":null,"abstract":"<div>This study investigates the structural, optical, and magnetic properties of a perovskite material, Cd0.5Ni0.5TiO3 (CNTO), synthesized via the solid-state reaction method. The structural analysis of CNTO samples revealed a dependence on calcination conditions. Rietveld refinement of X-ray diffraction patterns showed that the sample calcinated at 800 °C for 5 h exhibited a trigonal structure with space group R3 (#148) and a minor secondary phase of TiO2 with a tetragonal rutile structure (P4₂/mnm, #136). In contrast, calcination at 900 °C for 10 h yielded a pure rhombohedral ilmenite phase with no detectable secondary phase. Fourier Transform Infrared Spectroscopy (FTIR) confirmed the formation of metal-oxygen bonds, and UV-Vis spectroscopy coupled with Tauc plot analysis determined a direct bandgap of 3.0 (± 0.015) eV. Magnetic measurements indicated room temperature paramagnetism (PM), suggesting a unique combination of optical and magnetic properties. These results position CNTO as a promising candidate for optoelectronic devices and magnetic sensor applications.</div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 3","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00339-025-08317-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143373402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving the electrochemical performance of Ag-doped Ni-rich Li (Ni0.88 Co0.09 Al0.03)1−x O2 layered cathode material

IF 2.5 4区材料科学

Applied Physics A Pub Date : 2025-02-10 DOI: 10.1007/s00339-025-08310-7

Yulong Kang, Yibo Zhang, Liang Zhao, Yongkuan Zhang, Hao Tang, Yuan Xu, Yan Tan, Xiaoyi Hou, Jiatai Wang

{"title":"Improving the electrochemical performance of Ag-doped Ni-rich Li (Ni0.88 Co0.09 Al0.03)1−x O2 layered cathode material","authors":"Yulong Kang, Yibo Zhang, Liang Zhao, Yongkuan Zhang, Hao Tang, Yuan Xu, Yan Tan, Xiaoyi Hou, Jiatai Wang","doi":"10.1007/s00339-025-08310-7","DOIUrl":"10.1007/s00339-025-08310-7","url":null,"abstract":"<div>High-nickel ternary cathode materials are highly regarded for their high capacity and low cost, making them among the most promising materials for development and research. However, the development of cathode materials is hindered by the long-term capacity loss and side reactions during charging and discharging. Here, we prepared Ag+-doped LiNi0.88Co0.09Al0.03O2 cathode materials via the high-temperature solid-state method, which exhibited higher discharge capacity and capacity retention compared to the undoped cathode materials. The results show that the initial discharge capacity of 2.0 mol% Ag+-doped Li(Ni0.88Co0.09Al0.03)1−xO2 is 225.4 mAh g− 1, which is 16.5% higher than that of the undoped cathode material (193.5 mAh g− 1), and the initial coulomb efficiency is 98.8% at 0.1 C. Furthermore, the initial discharge specific capacity was 223.4 mAh g− 1, and after 100 cycles at indoor temperature at 0.2 C, the specific capacity was still 177.8 mAh g− 1, and the capacity retention rate was as high as 95.5%. This work provides a new strategy to improve the electrochemical performance of nickel-rich cathode materials.</div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 3","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143373215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A modified Johnson–Cook model for 304 stainless steel

IF 2.5 4区材料科学

Applied Physics A Pub Date : 2025-02-10 DOI: 10.1007/s00339-025-08276-6

Hongyan Duan, Yuanji Gao, Yang Liu, Rongzhen Di, Yan Shi

{"title":"A modified Johnson–Cook model for 304 stainless steel","authors":"Hongyan Duan, Yuanji Gao, Yang Liu, Rongzhen Di, Yan Shi","doi":"10.1007/s00339-025-08276-6","DOIUrl":"10.1007/s00339-025-08276-6","url":null,"abstract":"<div>304 stainless steel (SS 304), as a high-temperature resistant material, has attracted widespread attention. To investigate the high-temperature rheological behavior of SS 304, isothermal hot compression tests were conducted using the Gleeble-3800 thermal simulation machine at temperatures ranging from 800 to 1200 °C, strain rates of 0.01 to 10(:{s}^{-1}), and a deformation of 60%. Based on the experimental data, the Johnson–Cook (JC) constitutive model was established and modified. By incorporating the coupling effects of strain, strain rate, and temperature, a more accurate constitutive equation was proposed. The results show that the modified JC model provides better predictions of the rheological behavior of SS 304, with a correlation coefficient (Rco) of 0.9884 and an average absolute relative error (AARE) of 8.452%, indicating high prediction accuracy. The modified model was validated using ABAQUS. This study provides important theoretical references for the hot processing of SS 304 and help accurately calculate the material’s stress response at high temperatures, thereby optimizing processing parameters and enhancing material performance.</div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 3","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143373400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The effect of tin droplet impact velocity and stainless steel substrate temperature on droplet splashing behavior

IF 2.5 4区材料科学

Applied Physics A Pub Date : 2025-02-10 DOI: 10.1007/s00339-025-08300-9

Mingkang Wang, Fengfeng Wang, Xiwushan Wang, Baoqing Yang, Weiyuan Yu

{"title":"The effect of tin droplet impact velocity and stainless steel substrate temperature on droplet splashing behavior","authors":"Mingkang Wang, Fengfeng Wang, Xiwushan Wang, Baoqing Yang, Weiyuan Yu","doi":"10.1007/s00339-025-08300-9","DOIUrl":"10.1007/s00339-025-08300-9","url":null,"abstract":"<div>Thermal spraying technology plays a crucial role in industrial production, but the splashing phenomenon during spraying wastes raw materials, damages the cleanliness of the substrate surface, and affects the quality and adhesion strength of coatings. Therefore, controlling the splashing behavior is key to improving coating quality and reducing costs. In this study, Sn and 304 SS, representing a typical non-reactive wetting system, were selected as the research objects. A numerical model of droplet impact on a metal substrate was established based on the CLSVOF method, and the model was validated by comparing the simulation results with experimental data. The effects of droplet impact velocity and substrate temperature on splashing behavior were investigated, and the role and regulatory mechanism of solidification phenomena during spreading and wetting were explored. Additionally, the energy changes during the splashing process were analyzed. The results show that an increase in droplet impact velocity intensifies the splashing behavior, while changes in substrate temperature have a more complex effect due to the interaction of droplet phase transition effects. Specifically, the solidification at the droplet edge can become a disturbance that promotes splashing, but the change in surface tension and viscosity of the droplet driven by substrate temperature plays the dominant role. These findings provide insights into the splashing control mechanism and offer a theoretical basis for optimizing thermal spraying technology, with potential to improve coating quality, reduce material waste, and expand the application of thermal spraying in industrial production.</div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 3","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143373238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sequentially timed all-optical mapping photography with thin-plate-based spectral broadening for advanced laser ablation system compatibility

IF 2.5 4区材料科学

Applied Physics A Pub Date : 2025-02-10 DOI: 10.1007/s00339-025-08311-6

Keitaro Shimada, Huijie Sun, Takao Saiki, Yusuke Ito, Keiichi Nakagawa

{"title":"Sequentially timed all-optical mapping photography with thin-plate-based spectral broadening for advanced laser ablation system compatibility","authors":"Keitaro Shimada, Huijie Sun, Takao Saiki, Yusuke Ito, Keiichi Nakagawa","doi":"10.1007/s00339-025-08311-6","DOIUrl":"10.1007/s00339-025-08311-6","url":null,"abstract":"<div>Sequentially timed all-optical mapping photography (STAMP) is a powerful technique for capturing the poorly reproducible ablation dynamics induced by ultrashort laser pulses. However, its application in ablation visualization is limited by system complexities and the need for a broad probe wavelength band. In this paper, we present a compact STAMP solution employing thin-plate-based spectral broadening, which enables seamless integration into conventional narrowband pump-probe imaging systems for laser ablation. The system is organized into three modules: spectral broadening using a CaF2 thin plate, pulse stretching with a grating pair or spectrum shuttle, and 2D spectral imaging using a spectral filtering system. This setup allows for the single-shot acquisition of 24-frame sequential images, with a temporal window of up to 400 ps in the 515-nm wavelength band, which corresponds to the second harmonic of Yb-based lasers. The system demonstrated ultrafast imaging of laser ablation in glass using the 800-nm fundamental band of a Ti:sapphire laser for ablation and the 515-nm band generated via optical parametric amplification for probing. Finally, the system applicability to narrow-bandwidth light sources was validated by integrating the packaged STAMP system into a Yb:KGW laser setup and extending the second harmonic’s bandwidth from 5 to 9 nm. The compatibility of this STAMP system with various laser ablation systems opens new avenues for investigating complex ablation dynamics, offering single-shot imaging in a more accessible and versatile format.</div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 3","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00339-025-08311-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143373401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Significance analysis of laser quenching parameters the rack based on the Koistinen-Marburger model

IF 2.5 4区材料科学

Applied Physics A Pub Date : 2025-02-10 DOI: 10.1007/s00339-025-08299-z

Jiangtao Zhao, Chang Li, Hao Zhan, Menghui Yu, Xing Han

{"title":"Significance analysis of laser quenching parameters the rack based on the Koistinen-Marburger model","authors":"Jiangtao Zhao, Chang Li, Hao Zhan, Menghui Yu, Xing Han","doi":"10.1007/s00339-025-08299-z","DOIUrl":"10.1007/s00339-025-08299-z","url":null,"abstract":"<div>According to the Koistinen-Marburger model, the evolution mechanism of the hardened layer during laser quenching can be quantitatively revealed. This is of great significance for improving the laser quenching effect and optimizing the process parameters. This study thoroughly investigated the distribution of the hardened layer and the transient temperature evolution during laser quenching of the rack by numerical simulations. Under the premise of considering the angle of incidence of the laser beam, the focus is on exploring the significant influence of the laser overlap rate on the size of the tempering softening zone and the uniformity of the hardened layer. The results indicate a positive correlation between the laser beam’s incident angle and the hardened layer’s surface width, and an inverse correlation with its depth. It was found that as the laser overlap rate increases, the hardened layer distribution becomes more uniform and the tempered softening region expands. In-depth comparison shows that changes in tempering width are more pronounced than those in depth. Finally, Considering the efficiency of laser processing and the specific parameters of the gear rack, it was determined that the optimal quenching effect is achieved when the incident angle of the gear rack laser quenching is 35 ° and the overlap rate is 40%. The numerical simulation’s validity is confirmed by comparing its results with experimental data. The Koistinen-Marburger model-based numerical simulation offers substantial theoretical support for optimizing machining process parameters, significantly enhancing the rack’s service life.</div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 3","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143373214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of crystalline structure type on the optical and catalytic performance of zinc molybdate nanoparticles for hydrogen production

IF 2.5 4区材料科学

Applied Physics A Pub Date : 2025-02-10 DOI: 10.1007/s00339-025-08322-3

Zein K. Heiba, M. M. Ghannam, M. Abdellatief, Ali Badawi, Mohamed Bakr Mohamed

{"title":"Impact of crystalline structure type on the optical and catalytic performance of zinc molybdate nanoparticles for hydrogen production","authors":"Zein K. Heiba, M. M. Ghannam, M. Abdellatief, Ali Badawi, Mohamed Bakr Mohamed","doi":"10.1007/s00339-025-08322-3","DOIUrl":"10.1007/s00339-025-08322-3","url":null,"abstract":"<div>Two distinct methodologies have been employed for the synthesis of ZnMoO4 nanoparticles, specifically sol-gel and hydrothermal techniques. The sol-gel approach resulted in the formation of a singular-phase triclinic α-ZnMoO4, in contrast, the hydrothermal technique produced a monoclinic β-ZnMoO4. Synchrotron x-ray diffraction patterns were measured and full crystal structure determination for both phases was achieved utilizing Rietveld refinement method. Further structural investigation was performed employing Raman spectroscopy. A comparative study of the optical properties of obtained samples was performed utilizing diffuse reflectance spectroscopic measurements. The band gap energy was determined for the triclinic phase, 4.29 eV, whereas for the monoclinic is 3.0 eV. Both phases have a similar broad photoluminescence spectrum but with some differences in positions of subpeaks; the PL peak intensity of the α-phase is almost half that of β-phase. The α- and β-phases of the ZnMoO4 system are regarded as effective catalysts for hydrogen production utilizing sodium borohydride (NaBH4). ZnMoO4 sample with a triclinic structure has the maximum hydrogen production rate (7.64 mL s− 1g− 1). The rates of hydrogen volume developed at the different temperatures were performed. The activation energy, enthalpy of activation and the entropy of activation were estimated for α-phase ZnMoO4 sample.</div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 3","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143373398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of special gate metals on polarization Coulomb field scattering in AlGaN/GaN high electron mobility transistors

IF 2.5 4区材料科学

Applied Physics A Pub Date : 2025-02-10 DOI: 10.1007/s00339-025-08327-y

Zhiliang Gao, Qianding Cheng, Yanhui Han, Ming Yang, Yafei Yuan, Ruojue Wang, Jihao He, Feng Yan, Xu Tang, Weihong Zhang, Zijun Hu, Jingguo Mu

{"title":"Effect of special gate metals on polarization Coulomb field scattering in AlGaN/GaN high electron mobility transistors","authors":"Zhiliang Gao, Qianding Cheng, Yanhui Han, Ming Yang, Yafei Yuan, Ruojue Wang, Jihao He, Feng Yan, Xu Tang, Weihong Zhang, Zijun Hu, Jingguo Mu","doi":"10.1007/s00339-025-08327-y","DOIUrl":"10.1007/s00339-025-08327-y","url":null,"abstract":"<div>AlGaN/GaN HEMTs were fabricated using two special gate metals, Hf and W, as gate Schottky contact materials. Based on the measured I-V data and two-dimensional scattering theory, the electron mobility corresponding to polarization Coulomb field (PCF) scattering and other scattering mechanisms was calculated. The additional polarization charge (APC) due to the inverse piezoelectric effect (IPE) was also calculated. The differences in the effects of two special gate metals, Hf and W, on the PCF scattering intensity are analyzed from the aspects of Young’s modulus and work function of the metal. It was found that compared with W metal, Hf metal has a smaller Young’s modulus and weaker ability to resist elastic deformation, which makes the AlGaN barrier layer in contact with Hf more easily deformed due to IPE, resulting in more APC under the Hf metal Schottky contact. On the other hand, Hf has a smaller work function compared to W metal, so the 2DEG density is higher. The influence of special gate metals Hf and W on the PCF scattering intensity is the result of the combined effect of these two factors. This study is of great significance for understanding the electron transport mechanisms of AlGaN/GaN HEMTs with special gate metals such as Hf and W, and for further improving the electrical performance and stability of the devices.</div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 3","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143373399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","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 morphological variations on the microscopic, structural, and magnetotransport characteristics of La0.67Ba0.33MnO3 compounds

IF 2.5 4区材料科学

Applied Physics A Pub Date : 2025-02-10 DOI: 10.1007/s00339-025-08326-z

Chinmay Sahu, Shubha Dubey, Kumud Dubey, Vineet Sahu, Anchit Modi, N. K. Gaur

{"title":"Influence of morphological variations on the microscopic, structural, and magnetotransport characteristics of La0.67Ba0.33MnO3 compounds","authors":"Chinmay Sahu, Shubha Dubey, Kumud Dubey, Vineet Sahu, Anchit Modi, N. K. Gaur","doi":"10.1007/s00339-025-08326-z","DOIUrl":"10.1007/s00339-025-08326-z","url":null,"abstract":"<div>In this study, the impact of morphological variations was investigated with respect to the structural, electrical transport, and magnetoresistance properties of La0.67Ba0.33MnO3 manganites, comparing their behaviours at both bulk and nanoscale levels. The structural analysis through Rietveld refinement confirmed the rhombohedral phase crystallization in both samples in R-3c space group. The SEM analysis revealed the crystalline nature of the bulk sample, while the nano sample exhibited particle agglomeration. Additionally, TEM imaging revealed a mean particle size 53.75 nm in the nano sample. The investigation of the metal-insulator transition (TMI) in the nano sample suggests an increase in electron-electron scattering at grain boundaries with diminishing grain size, resulting in a shift of the TMI to approximately 200 K. Below 50 K, the resistivity data indicated a Kondo-like transport behaviour. At the same time, the ferromagnetic-metallic region includes resistivity contributions from grain/domain boundaries, as well as electron-electron and electron-phonon scattering interactions. The conductive behaviour at temperatures above TMI was elucidated through the small polaron hopping (SPH) mechanism and the variable range hopping (VRH) model. Both bulk and nano LBMO samples showed resistivity dominance by grain boundary effects and electron-electron scattering, with the highest MR values recorded as 47.14 and 41.93, respectively, showing a decrease as grain size reduces.</div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 3","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143373173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of surface ultraviolet/ozone treatment on the electrical characteristics of Pt/Ga2O3/SiC Schottky diodes

IF 2.5 4区材料科学

Applied Physics A Pub Date : 2025-02-07 DOI: 10.1007/s00339-024-08198-9

Se-Rim Park, Tae-Hee Lee, Ji-Soo Choi, Hyun-Woo Lee, Seung-Hwan Chung, Min-Yeong Kim, Geon-Hee Lee, Michael A. Schweitz, Sang-Mo Koo

{"title":"Effects of surface ultraviolet/ozone treatment on the electrical characteristics of Pt/Ga2O3/SiC Schottky diodes","authors":"Se-Rim Park, Tae-Hee Lee, Ji-Soo Choi, Hyun-Woo Lee, Seung-Hwan Chung, Min-Yeong Kim, Geon-Hee Lee, Michael A. Schweitz, Sang-Mo Koo","doi":"10.1007/s00339-024-08198-9","DOIUrl":"10.1007/s00339-024-08198-9","url":null,"abstract":"<div>This study investigates the effects of ultraviolet/ozone (UV/O3) treatment on the electrical and morphological characteristics of Pt/Ga2O3 diodes. Surface treatment is crucial in gallium oxide (Ga₂O₃)-based devices due to its ability to reduce surface defects and improve interface quality, significantly enhancing device performance. Electrical characterization was performed using capacitance–voltage (C–V), current–voltage (I–V), breakdown voltage (BV), and temperature-dependent current–voltage (I–V–T) measurements. Surface analysis was performed via X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM). The UV/O₃-treated diodes exhibited improved performance, with the on/off ratio increasing from 5.60 × 103 to 2.49 × 104 and reduced reverse leakage current. Additionally, the treatment reduced Schottky barrier inhomogeneity, indicating a more uniform metal/semiconductor interface. These improvements are attributed to the reduction of oxygen vacancy defects and enhanced surface morphology, as confirmed by XPS and AFM. The results suggest that UV/O₃ treatment effectively enhances the performance of Ga₂O₃-based diodes by controlling interface properties.</div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 3","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0