Article
Chemistry, Physical
Cong Zhang, Xiuling Wang, Lexing Liang, Haifeng Yuan, Jianqi Qi, Zhijun Liao, Tiecheng Lu
Summary: In this study, highly transparent Yb2O3 ceramics were successfully fabricated with zirconia doping, which effectively inhibited grain growth and improved optical properties. The research also investigated the absorption spectra, emission spectra, and fluorescence lifetime of Yb2O3 transparent ceramic, indicating its potential application in thin-disk laser elements.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Mingyue Wang, Andreas Kafizas, Sanjayan Sathasivam, Matthew O. Blunt, Benjamin Moss, Soranyel Gonzalez-Carrero, Claire J. Carmalt
Summary: ZnO/BiOI heterojunction photoanode thin films were investigated for their water oxidation functionality, and it was found that a ZnO layer with a thickness of 120 nm (deposited at 350 degrees C) and a BiOI layer with a thickness of 390 nm (deposited at 300 degrees C) achieved the best photoelectrochemical performance. The heterojunction showed a significant increase in photoelectrochemical activity, with a photo-current of 0.27 mA·cm-2 observed at 1.1 VRHE, which is about 2.2 times higher than that of single-layer ZnO and much higher than that of BiOI. Analysis revealed effective charge transfer and spatial separation of charge carriers at the heterojunction, leading to improved lifetime and ability to drive photoelectrochemical water oxidation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Materials Science, Ceramics
Soja K. Vijay, R. Krishna Prabhu, V. Chandramouli, S. Anthonysamy, Ashish Jain, Chanchal Ghosh, R. Mythili, Arup Dasgupta
Summary: This study investigates the sintering of nanocrystalline boron carbide using spark plasma sintering and hot-pressing techniques. The results show that both methods can achieve high-density boron carbide.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Jie Liang, Xuetong Zhao, Shenglin Kang, Jing Guo, Zhiling Chen, Yuli Long, Qian Zeng, Jianjie Sun, Lijun Yang, Ruijin Liao, Clive A. Randall
Summary: In this work, a hybrid cold sintering/spark plasma sintering (CSP-SPS) process is demonstrated for densifying and controlling grain growth in ZnO ceramics. The CSP-SPS process achieves high densities (>98%) at lower temperatures (200-300 ℃) and exhibits mild grain coarsening.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Xiaoying Li, Qiang Liu, Xin Liu, Danyang Zhu, Dianjun Hu, Feng Tian, Lexiang Wu, Zhaoxiang Yang, Tengfei Xie, Haohong Chen, Jiang Li
Summary: Transparent terbium aluminum garnet (TAG) ceramics were successfully prepared through vacuum sintering and HIP post-treating, showing that increasing sintering temperature can enhance optical quality. Additionally, the addition of sintering aid TEOS improves optical quality and inhibits valence state changes during annealing. The Verdet constant of the TAG ceramics at room temperature is significantly higher than that of commercial TGG crystals.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Engineering, Electrical & Electronic
Sathi Chatterjee, Asit Kumar Kar
Summary: A series of ZnO thin films were synthesized on ITO coated glass substrate by varying zinc nitrate concentration through an electrodeposition system. The characterization of the thin films revealed changes in composition, morphology, crystalline structure, and optical properties. The increase in zinc nitrate concentration led to the formation of ZnO bonds and higher presence of nitrate and -OH groups, influencing the surface morphology evolution.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Ceramics
L. S. Hagy, K. Ramos, M. V. Gelfuso, A. L. Chinelatto, A. S. A. Chinelatto
Summary: The reduction of sintering time and temperature for BaCe0.2Zr0.7Y0.1O3-delta was investigated using unconventional route and sintering aid. Effects of ZnO addition and microwave sintering on structure, sinterability, microstructure, and electrical conductivity were explored. Both ZnO addition and microwave sintering improved the density and conductivity, with microwave sintering providing a rapid alternative for sintering.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Xin Li Phuah, Bo Yang, Harry Charalambous, Thomas Tsakalakos, Xinghang Zhang, Haiyan Wang
Summary: The microstructure and defect characteristics of flash sintering under direct current and alternating current were investigated for the ZnO system. Differences were observed in grain size and defect distribution between DC and AC flash sintered ZnO samples. Raman spectroscopy revealed asymmetric peaks correlated to lattice disorder in the flash sintered ZnO samples.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Jing Guo, Mingming Si, Xuetong Zhao, Li Wang, Ke Wang, Jianyu Hao, Hong Wang, Clive A. Randall
Summary: This study successfully integrated C-60 with ZnO using a cold sintering process, forming thin C-60 layers at the ZnO grain boundaries and significantly improving the electrical properties of the material.
Article
Chemistry, Multidisciplinary
Arshad Farooq Butt, Muhammad Aamir, Moazzam Hussain Bhatti, Muhammad Aziz Choudhary, Jamil Ahmad, Muhammad Nawaz Tahir
Summary: This work describes a facile solution-based synthesis of a novel single molecular precursor with excellent DNA binding and anti-leishmanial properties, as well as the deposition of high-quality SnO(2) thin films on common window glass.
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Applied
Tatiana Rodriguez-Flores, Catalina Haro-Perez, Erick E. Gerardo-Morales, Gloria Elena de la Huerta-Hernandez, Leonardo Gonzalez-Reyes, Isaias Hernandez-Perez
Summary: In this study, ZnO nanoparticles with different precursor concentrations were synthesized and characterized for their morphology, structure, optical and photocatalytic properties. The results showed that the ZnO nanoparticles had different crystalline sizes and morphologies, exhibited absorbance in the UV region, and displayed colloidal stability at neutral and basic pH. Furthermore, ZnO nanoparticles synthesized with a precursor concentration of 0.2 M showed higher degradation and mineralization degree of the azo dye.
TOPICS IN CATALYSIS
(2022)
Article
Materials Science, Ceramics
Ana Gabriela Storion, Julieta Adriana Ferreira, Sylma Carvalho Maestrelli, Eliria Maria de Jesus Agnolon Pallone
Summary: The study investigated the effects of different forming techniques on flash sintering of ZnO specimens in the ceramic industry. It was found that isostatic pressing provided better control over microstructural homogeneity, while slip casting resulted in lower densities and longer incubation times. Variations in grain size distribution were observed in samples formed by different techniques, highlighting the importance of green specimen density distribution in flash sintering evaluation.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Humaira Rashid Khan, Muhammad Aamir, Bilal Akram, Mohammad Azad Malik, Asif Ali Tahir, Muhammad Aziz Choudry, Javeed Akhtar
Summary: This article focuses on the application of antimony-incorporated zinc oxide photoelectrodes in photoelectrochemical water splitting, and finds that the incorporated electrodes have better light absorbance and stability compared to pure zinc oxide electrodes.
BULLETIN OF MATERIALS SCIENCE
(2022)
Article
Materials Science, Ceramics
Jiin-Jyh Shyu, Cyuan-Jhou Li
Summary: Glass components fabricated by the sintering route have wide-ranging applications. However, the issue of residual pore-glass interfaces and crystal-glass interfaces causing light scattering and opacity remains a challenge. In this study, a transparent glass material with a low glass transition temperature was successfully fabricated by adjusting the processing parameters during sintering.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Mihail P. Petkov, Gerald E. Voecks
Summary: This work presents an experimental vacuum setup designed for sintering lunar regolith simulants and characterizing volatile species released from the decomposition of non-lunar components. The study highlights the importance of temperature and pressure in regolith sintering and emphasizes the need for high-vacuum capabilities due to high gas loads generated by the simulants. The use of mass spectrometry allows for the identification of specific released gas species and their potential as markers for thermally activated processes.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Tianlei Ma, Marek Nikiel, Andrew G. Thomas, Mohamed Missous, David J. Lewis
Summary: In this study, transparent and conducting undoped and molybdenum-doped tin oxide thin films were successfully prepared using aerosol-assisted chemical vapour deposition. The doping efficiency was found to be quantitative and could potentially allow precise control over dopant levels. Incorporation of Mo ions led to lower resistivity and high transmittance in the visible light range.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Tianlei Ma, Mohamed Missous, Gergo Pinter, Xiangli Zhong, Ben Spencer, Andrew G. Thomas, David J. Lewis
Summary: Investigation into novel and high-performance transparent conducting electrodes is necessary due to the limited availability of indium in ITO and its increasing demand. In-Sn-O thin films synthesized through AACVD exhibit excellent electro-optical properties and lower indium content compared to commercial ITO. Scanning electron microscopy images show dense crystal grains and uniform film thickness, highlighting the potential for AACVD to provide more sustainable alternatives to ITO.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Engineering, Electrical & Electronic
Nishi Mehak, Bindu Rani, Aadil Fayaz Wani, Shakeel Ahmad Khandy, Ajay Singh Verma, Atif Mossad Ali, M. A. Sayed, Shobhna Dhiman, Kulwinder Kaur
Summary: In this study, the electronic, structural, and thermoelectric properties of newly designed layered rare-earth metal germanide halides were investigated. The materials showed promising thermoelectric performance, making them suitable candidates for energy harvesting in thermoelectric applications.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Devidas I. Halge, Vijaykiran N. Narwade, Nabeel M. S. Kaawash, Pooja M. Khanzode, Sohel J. Shaikh, Jagdish W. Dadge, Prashant S. Alegaonkar, Rajeshkumar S. Hyam, Kashinath A. Bogle
Summary: This study presents the design and fabrication of a high-performance blue light photodetector using an n-type cadmium sulfide (CdS) thin film and a p-type polyaniline (PANI). The photodetector demonstrates exceptional performance characteristics, including high responsivity, detectivity, and sensitivity, along with rapid response time and rectification behavior. The research represents a significant advancement in the field of high-performance photodetectors.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Da Hu, Jiabin Lu, Qiusheng Yan, Yingrong Luo, Ziyuan Luo
Summary: This study introduces a chemical mechanical polishing technique based on metal electrochemical corrosion for single-crystal SiC to address the environmental pollution caused by the polishing solution in chemical mechanical polishing. Wear experiments were conducted to investigate the wear properties of SiC C-surface under different grinding ball materials and solutions. The proposed mechanism of material removal in single-crystal SiC via metal electrochemical corrosion was discussed.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Lifang Mei, Long Lin, Dongbing Yan, Yu Liang, Yu Wu, Shuixuan Chen
Summary: This paper investigates the removal of CuO particles from silicon wafer surfaces using a picosecond laser. Numerical calculations and experimental research were conducted, and a thermal-stress coupled finite element model was established. The results show that as the laser energy density increases, the removal rate of CuO particles initially increases and then decreases, while the roughness of the silicon substrate decreases and then increases.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Michihiro Yamada, Shuhei Kusumoto, Atsuya Yamada, Kentarou Sawano, Kohei Hamaya
Summary: In this study, we demonstrated the low-temperature growth of a Ge layer on a Co-based Heusler alloy via Sn doping, which improved the magnetic properties and spin signal.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Xiang-Long Wei, Bao-Feng Shan, Zong-Yan Zhao
Summary: This study synthesized and characterized a CuAlO2/CuGaO2 heterostructure and evaluated its photocatalytic performance. The heterostructure exhibited superior performance compared to individual CuAlO2 and CuGaO2 photocatalysts, with increased carrier concentration, enhanced redox capabilities, superior electrochemical stability, and reduced interfacial resistance. Photocatalytic experiments demonstrated the remarkable oxidation potential and notable reduction activity of the heterostructure, outperforming CuAlO2 and CuGaO2 in degradation rates and hydrogen production rates, respectively. These findings highlight the superior performance and broad applicability of the CuAlO2/CuGaO2 heterostructure in various photocatalytic reactions.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Micka Bah, Daniel Alquier, Marie Lesecq, Nicolas Defrance, Damien Valente, Thi Huong Ngo, Eric Frayssinet, Marc Portail, Jean-Claude De Jaeger, Yvon Cordier
Summary: This study investigates the AlN nucleation layer issue in GaN high frequency telecommunication and power switching systems fabricated after heteroepitaxy on Silicon or Silicon Carbide. It is shown that using 3C-SiC as an intermediate layer can significantly decrease RF propagation losses. Measurements and analyses demonstrate that dopant diffusion into the 3C-SiC pseudo-substrate is confined beneath the interface, and a slightly conductive zone is present beneath the AlN/3C-SiC interface, explaining the low propagation losses obtained for the devices. This work highlights the importance and efficiency of the 3C-SiC intermediate layer as a pseudo-substrate.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Shuang Wang, Lijun Wu, Zhiqing Wang, Ziyue Qian
Summary: The geometric structure and electrical properties of zigzag and armchair DWSiNT perfect tubes with different Stone-Wales defects were simulated using the SCC-DFTB method. It was found that the atomic arrangement, stability, energy gap, and charge distribution strongly depend on the type of tube. The effects of strong and weak electric fields on the tubes were also investigated, showing different impact on stability and energy gap. These findings have implications for future experimental studies.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Nanda Kumar Reddy Nallabala, Sunil Singh Kushvaha, Sambasivam Sangaraju, Venkata Krishnaiah Kummara
Summary: This study focuses on the preparation and performance of MIS-type high-k dielectric oxide-based UV photodetectors. The researchers found that the Au/Ta2O5/GaN devices prepared on Ta2O5/GaN heterojunction with post-annealing exhibited improved photoresponsivity, EQE, and rise/fall times. This improvement is attributed to the optimized band configuration of the Ta2O5/GaN heterostructure and the effect of post-annealing on photogenerated charge carriers.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Jean-Francois Michaud, Marc Portail, Daniel Alquier, Dominique Certon, Isabelle Dufour
Summary: This paper reviews the use of MEMS devices without sensitive layers in gas detection applications. These devices can measure a physical property of the gas to determine its concentration, and have the advantages of generality and high detection limits.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Kanyu Yang, Chaojie Shi, Ruizhao Tian, Haoyue Deng, Jie He, Yangyang Qi, Zhengchun Yang, Jinshi Zhao, Zhen Fan, Jun Liu
Summary: This study investigates the electrical and synaptic properties of Ag/TiO2 nanorod/FTO-based RRAM devices, focusing on the impact of different seed layer thicknesses on nanorod thickness and RRAM performance. The devices show remarkable achievements in terms of endurance, self-compliance, and resistance switching ratio. The switching mechanism is attributed to space-charge-limited conduction resulting from electron trapping in oxygen vacancy traps. The devices also maintain stable synaptic properties even after undergoing multiple cycles of long-term potentiation and depression.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Karthickraj Muthuramalingam, Wei-Chih Wang
Summary: This study presents a non-destructive approach using terahertz time-domain spectroscopy (THz-TDS) to estimate the electrical properties of semi-insulating compound semiconductors. The study successfully measures the resistivity and carrier concentration of semi-insulating Silicon Carbide (SiC) and Indium Phosphide (InP) wafers using THz-TDS in transmission mode. The simplified Drude model and the Nelder-Mead algorithm are employed to estimate the electrical properties, and the results are in accordance with the manufacturer specifications. The feasibility of non-destructive mapping of the electrical properties is demonstrated, offering a promising tomographic inspection approach for online monitoring.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Pengfei Wei, Rui Tong, Xiaofeng Liu, Yao Wei, Yongan Zhang, Xu Liu, Jian Dai, Haipeng Yin, Dongming Liu
Summary: This study investigates the influence of SiNx and SiOxNy as rear-side passivation films on the performance of PERC+ cells. SiNx film is found to have better passivation performance and resistance to aluminum paste erosion, while SiOxNy film exhibits better optical performance. By designing multi-layer SiNx/SiOxNy/SiNx stacks, the cells' efficiency and bifaciality are significantly improved.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Shuangting Ruan, Xiaolan Li, Wen Cui, Zhihui Zhang, Zhihui Xu, Huanqi Cao, Shougen Yin, Shishuai Sun
Summary: Integrating photosensitive electrode materials can effectively improve the low temperature tolerance and enhance energy density and power density. The surface morphology reconstruction technique can increase the active surface area and improve electrolyte contact, leading to higher specific capacity. Additionally, the electrodes demonstrate excellent photoelectric and photothermal conversion abilities, allowing the supercapacitor to maintain high energy density even at low temperatures.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Review
Engineering, Electrical & Electronic
Ashmalina Rahman, James Robert Jennings, Mohammad Mansoob Khan
Summary: This review provides a comprehensive overview of the synthesis and applications of nanostructured CuInS2 in photocatalytic applications. Various strategies, including the introduction of dopants, surface decoration, and heterojunction formation, have been summarized to improve the photocatalytic performance of CuInS2. However, scientific challenges such as the high carrier recombination rate limit the broad application of CuInS2.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)