Article
Materials Science, Multidisciplinary
Jianfeng He, Hongyu Chen, Qixiao Zhao, Yifan Wang, Yuan Pan, Shan Huang, Francis Chi-Chung Ling, Shuangpeng Wang, Shichen Su
Summary: Layer-structured beta-In2Se3 microwires were successfully prepared without a catalyst, serving as building blocks for high-performance photodetectors. A lateral p-n junction based on CuInSe2/In2Se3 microwire exhibited excellent photovoltaic characteristics with high rejection ratio and responsivity, offering new insights for the rational design of efficient and cost-effective photodetectors.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Wonjun Choi, Jongtae Ahn, Ki-Tae Kim, Hye-Jin Jin, Sungjae Hong, Do Kyung Hwang, Seongil Im
Summary: The highly crystalline 2D/3D-mixed p-transition metal dichalcogenide (TMD)/n-Ga2O3 heterojunction devices were fabricated by mechanical exfoliation, focusing on ambipolar channel transistors with two different types of channels in a single device architecture, with successful high-speed photo-sensing applications achieved.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jiamin Sun, Xinming Zhuang, Yibo Fan, Shuai Guo, Zichao Cheng, Dong Liu, Yanxue Yin, Yufeng Tian, Zhiyong Pang, Zhipeng Wei, Xiufeng Song, Lei Liao, Feng Chen, Johnny C. Ho, Zai-xing Yang
Summary: In this research, an efficient strategy using metal-semiconductor junction to enhance the hole mobility of p-channel devices was proposed. By depositing CMOS-compatible metals on the surface of GaSb nanowire field-effect transistors, the peak hole mobility was increased threefold. This approach was also effective for other p-channel devices like GaAs and WSe2, resulting in improved performance for CMOS inverters.
Article
Optics
Ying-Shi Guan, Jing Qiao, Yingying Liang, Hari Krishna Bisoyi, Chao Wang, Wei Xu, Daoben Zhu, Quan Li
Summary: In this study, high-performance n-type semiconductor nanosheets were fabricated and air-stable field-effect transistors, phototransistors, with wide spectral response were developed.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Yifei Wang, Zhenhua Lin, Jingli Ma, Yongyi Wu, Haidong Yuan, Dongsheng Cui, Mengyang Kang, Xing Guo, Jie Su, Jinshui Miao, Zhifeng Shi, Tao Li, Jincheng Zhang, Yue Hao, Jingjing Chang
Summary: Solar-blind photodetectors based on p-organic/n-Ga2O3 hybrid heterojunctions have been investigated. A multifunctional photodetector based on p-PCDTBT/n-Ga2O3 is fabricated and shown to work in both phototransistor mode and self-powered mode. The introduction of PCDTBT reduces the dark current and enhances the photoresponse parameters of the photodetector to solar-blind UV light. Moreover, the built-in field in the heterojunction enables self-powered behavior.
Article
Nanoscience & Nanotechnology
Dong Hun Lee, Honghwi Park, Michael Clevenger, Hyeonghun Kim, Chung Soo Kim, Mingyuan Liu, Giyong Kim, Han Wook Song, Kwangsoo No, Sung Yeol Kim, Dong-Kyun Ko, Anne Lucietto, Hongsik Park, Sunghwan Lee
Summary: This study demonstrates a simple processing route to fabricate oxide-based p-n heterojunctions with high rectification performance. By selecting appropriate materials and post-processing methods, high on/off rectification behavior, low saturation current, and small turn-on voltage were achieved in the heterojunctions.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Physics, Multidisciplinary
Maolin Zhang, Wanyu Ma, Qiong Zhang, Ang Bian, Zeng Liu, Lili Yang, Shan Li, Yufeng Guo, Weihua Tang
Summary: In this study, a heterojunction photodetector combining MAPbBr3 and GaN was constructed, and its detection capabilities were examined. The results demonstrated superior performance, including high rectification ratio and photo-to-dark current ratio. Additionally, the characteristics of the photodetector and possible methods for further performance enhancements were discussed.
Article
Chemistry, Multidisciplinary
Muhammad Hussain, Asif Ali, Syed Hassan Abbas Jaffery, Sikandar Aftab, Sohail Abbas, Muhammad Riaz, Thi Phuong Anh Bach, Muhammad Raza, Javed Iqbal, Sajjad Hussain, Zdenek Sofer, Jongwan Jung
Summary: Transparent semiconductor oxides with two-dimensional heterostructures have been extensively studied for their remarkable photovoltaic characteristics, and this study demonstrates a transparent near-infrared photodetector with high photoresponsivity and fast response time. The device shows wavelength-dependent photovoltaic behavior and the direction of the electric field polarity across the junction can be flipped.
Article
Energy & Fuels
Krishan Kumar, Reena Yadav, Sudhir Husale, Preetam Singh, Davinder Kaur
Summary: In this study, n-MoS2/p-Si and n-MoS2/AlN/p-Si Semiconductor-Insulator-Semiconductor (SIS) heterojunctions based photodetectors were fabricated using dc magnetron sputtering technique. The results showed that the insertion of an ultrathin insulating AlN layer significantly improved the responsivity and response time of the heterojunctions.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Chemistry, Multidisciplinary
Shi Fang, Liuan Li, Weiyi Wang, Wei Chen, Danhao Wang, Yang Kang, Xin Liu, Hongfeng Jia, Yuanmin Luo, Huabin Yu, Muhammad Hunain Memon, Wei Hu, Boon S. Ooi, Jr-Hau He, Haiding Sun
Summary: This research reports a bipolar-junction photoelectrode with a gallium nitride (GaN) p-n homojunction nanowire array, operating in electrolyte, and demonstrating bipolar photoresponse controlled by different wavelengths of light. By rationally decorating the nanowires with a ruthenium oxide (RuOx) layer, guided by theoretical modeling, the resulting RuOx/p-n GaN photoelectrode exhibits significantly boosted bipolar photoresponse compared to the pristine nanowires. The loading of the RuOx layer optimizes surface band bending, promotes charge transfer, and enhances the efficiency of redox reactions, leading to improved positive and negative photocurrents. Lastly, a dual-channel optical communication system is constructed using only one photoelectrode to decode encrypted dual-band signals.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Juan Yao, Ludan Zhang, Hongli Zhao, Zhitao Chen, Tengfei Bi, Huan He, Xiaoming Shen, Yuechun Fu
Summary: In this study, ZnO nanowires were successfully grown on p-Si substrates using the hydrothermal method, and a self-powered ultraviolet photodetector was constructed. The morphology and performance of the ZnO nanowires changed with increasing growth time.
Article
Chemistry, Multidisciplinary
Shuo Zhang, Kexin Guo, Hong Han, Haiyang Yu, Huanhuan Wei, Jiangdong Gong, Wentao Xu
Summary: This paper introduces a synaptic transistor that combines p-type and n-type semiconductor nanowires to emulate complex neural functions. By utilizing nanowires with different polarities, it is possible to simulate a variety of neural activities, providing important insights for the development of future neuromorphic electronics.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xuan Wang, Yehua Tang, Wanping Wang, Hao Zhao, Yanling Song, Chaoyang Kang, Kefan Wang
Summary: In this study, Bi2Se3 film was deposited onto silicon nanowires using vacuum evaporation method to create a bulk heterojunction, resulting in a self-powered photodetector with a wide detection range and fast response speed. This silicon-based photodetector shows promise for near- and mid-infrared applications, making it a potential candidate for future optoelectronic devices.
Article
Multidisciplinary Sciences
Mingchao Xiao, Jie Liu, Chuan Liu, Guangchao Han, Yanjun Shi, Chunlei Li, Xi Zhang, Yuanyuan Hu, Zitong Liu, Xike Gao, Zhengxu Cai, Ji Liu, Yuanping Yi, Shuai Wang, Dong Wang, Wenping Hu, Yunqi Liu, Henning Sirringhaus, Lang Jiang
Summary: Bulk heterojunctions in organic photovoltaic devices have complex structures, but highly-ordered organic p-n junctions are desirable for studying the nature of organic heterojunctions. By using a design rationale, the authors successfully fabricated p-n heterojunctions based on monolayer molecular crystals.
NATURE COMMUNICATIONS
(2021)
Article
Physics, Applied
Xiaochi Liu, Yuchuan Pan, Junqiang Yang, Deshun Qu, Huamin Li, Won Jong Yoo, Jian Sun
Summary: This study demonstrates a unique structure of two-dimensional p-MOSFET with controlled oxygen plasma-induced degenerate p-doping in contact areas, achieving excellent device performances including low threshold voltage, high on/off ratio, and high hole mobility.
APPLIED PHYSICS LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Kaige Wang, Di Wu, Dong Wang, Zixuan Deng, Yueyan Tian, Ligang Zhang, Libin Liu
Summary: This study investigated the effect of cooling rate on the mechanical properties of a beta titanium alloy, revealing that air-cooled alloy had larger omega phase size, higher tensile strength, but lower ductility compared to water-quenched alloy. The deformation mechanisms of the alloy also varied with cooling rate, showing a transition from stress-induced omega phase transformation to only dislocation slip.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Multidisciplinary
Youqiao Ma, Bo Liu, Zhiqin Huang, Jinhua Li, Zhanghua Han, Di Wu, Jun Zhou, Yuan Ma, Qiang Wu, Hiroshi Maeda
Summary: A novel spin-sorting achiral split-ring coupler is proposed and demonstrated to efficiently excite dielectric-loaded plasmonic modes in two independent waveguides unidirectionally based on the interaction between spin and orbital angular momenta. The approach shows great potential in designing compact beam splitters and developing advanced optical functionalities with flexible degree of freedom in on-chip chirality manipulation within chiral optics. The experiment achieved a high directionality contrast of up to 15.1 dB in selectively directing light with different spins into separate plasmonic waveguides.
Article
Optics
Xinzhen Ji, Zhuangzhuang Ma, Xu Chen, Di Wu, Yongtao Tian, Xinjian Li, Zhifeng Shi
Summary: This study reports a novel strategy to prepare non-toxic and deep-blue-emitting K2CuBr3 nanocrystalline films by introducing PMMA additives into the anti-solvent. The PMMA additives improve the crystallinity of the films, enhance the photoluminescence quantum yield, and enhance the stability of the films under harsh environmental conditions.
JOURNAL OF PHYSICS-PHOTONICS
(2022)
Article
Chemistry, Multidisciplinary
Huanyu Zhang, Tingxiu Yu, Chaoqiang Wang, Ruofei Jia, Azhar Ali Ayaz Pirzado, Di Wu, Xiujuan Zhang, Xiaohong Zhang, Jiansheng Jie
Summary: In this study, high-luminance PSC-LEDs based on single-crystalline CH3NH3PbBr3 microflakes were successfully fabricated using a liquid-insulator bridging (LIB) strategy. The device performance was systematically improved through crystal growth regulation and device architecture optimization.
Article
Chemistry, Multidisciplinary
Di Wu, Mengmeng Xu, Longhui Zeng, Zhifeng Shi, Yongzhi Tian, Xin Jian Li, Chong-Xin Shan, Jiansheng Jie
Summary: A highly polarization-sensitive PdSe2/GaN Schottky junction is developed for UV photodetection. The device exhibits a large responsivity, high specific detectivity, and fast response speed. The device is highly sensitive to polarized UV light due to the puckered structure of the PdSe2 layer, with a large dichroic ratio.
Article
Engineering, Electrical & Electronic
Can Fu, Chuan Lu, Hai-Yang Cheng, Xiang Zhang, Zhi-Xiang Zhang, Yu-Tian Xiao, Di-Hua Lin, Jiang Wang, Ji-Gang Hu, Zhi-Li Wang, Di Wu, Lin-Bao Luo
Summary: In this study, a wavelength sensor capable of quantitatively measuring the wavelength of UV to NIR light was presented. The sensor has a unique operation mechanism and can easily distinguish a 1 nm wavelength difference.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2022)
Article
Chemistry, Physical
Chaoyi Ding, Chun Liu, Ligang Zhang, Yunsheng Deng, Huxiang Liu, Di Wu, Libin Liu
Summary: A cost-affordable and ultrahigh-strength metastable beta titanium alloy has been designed by high-throughput diffusion couple technique. The effects of heat treatments on phase transformation, microstructure evolution, and tensile properties were investigated. Excellent strength-ductility combinations were obtained by choosing appropriate heat treatment schemes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Jia-Yin Liu, Jun-Jie Wang, Di-Hua Lin, Jiang Wang, Can Fu, Feng-Xia Liang, Xiang Li, Zi-Peng Gu, Di Wu, Lin-Bao Luo
Summary: In this study, a silicon nanowire (Si NW) ultraviolet photodetector (UVPD) was proposed, which exhibited high spectral selectivity and comparable or even better performance in terms of responsivity, external quantum efficiency, and specific detectivity compared to wide-band-gap semiconductor (WBS)-based UVPDs.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Chengkai Jiang, Zhe Deng, Bo Liu, Jinhua Li, Zhanghua Han, Yuan Ma, Di Wu, Hiroshi Maeda, Youqiao Ma
Summary: The spin-orbit coupling of light shows unprecedented potential in realizing on-chip integrated nanocircuits and quantum information processing, allowing for the manipulation of polarization and spatial degrees of freedom of photons. A dielectric-loaded plasmonic nanocircuit with a panda patterned transporter was proposed and demonstrated to directionally couple and guide plasmonic waves through two-branched waveguides, achieving a unidirectionality efficiency up to 0.95. This configuration may lead to the development of multifunctional nanocircuits for exploiting chiral manipulation with flexible degrees of freedom.
Article
Nanoscience & Nanotechnology
Yue Wang, Di-Hua Lin, Sheng-Hui Luo, Xiang Zhang, Can Fu, Jiang Wang, Chun-Yan Wu, Di Wu, Yu-Xue Zhou, Lin-Bao Luo
Summary: This research proposes a sensitive ultraviolet photodetector (UVPD) based on non-wide band gap semiconductor lead sulfide (PbS). Experimental results show that the PbS nanofilm-based UVPD exhibits high sensitivity to UV illumination at 365 nm and excellent environmental stability. These results open up an opportunity for low-cost-sensitive narrow band gap semiconductor-based UVPDs in future optoelectronic devices and systems.
ACS APPLIED NANO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Juanjuan Li, Dingwen Cao, Fangfang Chen, Di Wu, Yong Yan, Junli Du, Jinke Yang, Yongtao Tian, Xinjian Li, Pei Lin
Summary: This study introduces a novel wet-chemical thinning method for 2D tellurium, achieving scalability and site-specific thickness patterning capability. A polarity-switchable van der Waals heterodiode with a high rectification ratio is realized based on tellurium/WSe2, demonstrating its electronic application through fabricating a logic half-wave rectifier.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Optics
Di Wu, Chenguang Guo, Longhui Zeng, Xiaoyan Ren, Zhifeng Shi, Long Wen, Qin Chen, Meng Zhang, Xin Jian Li, Chong-Xin Shan, Jiansheng Jie
Summary: Being able to sense broadband infrared light is crucial for various applications. Two-dimensional topological semimetals have been explored for this purpose due to their electronic structure and energy dispersion relation. However, their limitations in charge separation efficiency, noise level, and integration hinder their use in technology.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Jinjin Hei, Xue Li, Shuoen Wu, Pei Lin, Zhifeng Shi, Yongtao Tian, Xinjian Li, Longhui Zeng, Xuechao Yu, Di Wu
Summary: Conventional methods of chemical vapor deposition and mechanical exfoliation fail to meet the demands for integrated optoelectronics and systems. Therefore, we propose a simple selenization approach to grow wafer-scale 2D p-WSe2 layers with high uniformity and customized patterns. The fabricated self-driven broadband photodetector exhibits high responsivity, large specific detectivity, and remarkable nanosecond response speed.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Longhui Zeng, Wei Han, Xiaoyan Ren, Xue Li, Di Wu, Shujuan Liu, Hao Wang, Shu Ping Lau, Yuen Hong Tsang, Chong-Xin Shan, Jiansheng Jie
Summary: A low-temperature self-stitched epitaxy approach was used to grow 2D palladium ditelluride (PdTe2) Dirac semimetal with excellent infrared photoresponse, enabling the fabrication of highly integrated mid-infrared imaging chips. The on-chip PdTe2/Si Schottky junction-based photodetector exhibited ultrabroadband photoresponse and high detectivity. This study paves the way for the low-temperature growth of 2D semimetals for uncooled mid-infrared sensing.
Article
Materials Science, Multidisciplinary
Yao-Zu Zhao, Can Fu, Feng-Xia Liang, Yu-Tian Xiao, Jing-Yue Li, Ming-Ming Liu, Di Wu, Lin-Bao Luo
Summary: This paper presents a near-infrared wavelength sensor made of stacked monolayer graphene/germanium heterojunctions. The sensor can quantitatively determine the wavelength through the photocurrent ratio. Experimental results show that the sensor has high accuracy and adjustable detection bandwidth in the near-infrared light range.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
