Article
Chemistry, Physical
Mingyu Xia, Xiaolong Zhao, Ci Lin, Wending Pan, Yingguang Zhang, Zhengxiao Guo, Dennis Y. C. Leung
Summary: This study reports a morphology engineering strategy to fabricate terrace-like tungsten oxide (TW) film and evaluates its high-voltage performance as a photoanode for photoelectrochemical (PEC) water splitting. Terrace-like WO3 films show higher photoelectrochemical performance compared to porous WO3 films due to their more regular nanostructure, smaller band gap, faster charge-transfer rate, and reduced recombination rate.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Marwa Mohamed Abouelela, Go Kawamura, Wai Kian Tan, Atsunori Matsuda
Summary: By modifying ANP WO3 with Bi2S3 quantum dots, this study has successfully designed a photoanode with high current density and photoconversion efficiency, providing new insights and methods for the study of photoelectrochemical water splitting.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Wei Lin, Yue Yu, Yaoxun Fang, Jianqiao Liu, Xinran Li, Jiangpeng Wang, Yilin Zhang, Chao Wang, Lin Wang, Xuelian Yu
Summary: This study presents an effective strategy for improving PEC performance by fabricating a WO3 photoanode rich in oxygen vacancies modified by NiFe-based LDH. The synergistic effect of NiFe-LDH and Ov significantly enhances the photocurrent density, leading to improved charge separation and transport.
Article
Chemistry, Multidisciplinary
E. Mustafa, E. A. Dawi, Z. H. Ibupoto, A. M. M. Ibrahim, A. Elsukova, X. Liu, A. Tahira, R. E. Adam, M. Willander, O. Nur
Summary: Water splitting energy production relies on high-performance PECs, and CuO is considered an excellent photocathode material. By incorporating Ag2WO4 nanoparticles onto CuO nanoleaves using SILAR, a CuO/Ag2WO4 composite with outstanding performance in the PEC water splitting process is developed. Factors such as surface active sites, charge separation rate, surface defects, and CuO and Ag2WO4 interaction contribute to the performance of the composite.
Article
Chemistry, Inorganic & Nuclear
Guobing Mao, Heng Wu, Tianyang Qiu, Dingjie Bao, Longjie Lai, Wenguang Tu, Qi Liu
Summary: Photoelectrochemical (PEC) hydrogen production from water splitting is a green technology that converts solar energy into renewable hydrogen fuel. In this study, WO3@Fe2O3 core-shell nanoarray heterojunction photoanodes were used to achieve high photocurrent density and IPEC values under visible light. This was achieved through efficient light-harvesting from Fe2O3, the formation of type-II heterojunctions, and the direct charge transport channels in the 1D WO3 nanoarray structures.
CHINESE JOURNAL OF STRUCTURAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Junjun Zhang, Cu Dang Van, Kuniharu Takei, Min Hyung Lee
Summary: Arrays of WO3-Si forest hierarchical structures were successfully synthesized by growing WO3 nanorod on the surface of vertically aligned n-Si micropillar arrays. The 3D WO3-Si nanorod forest showed improved photoelectrochemical performances and exhibited higher photocurrent density and a more negative onset potential compared to the WO3 nanorod array on planar Si substrate. Furthermore, the directly grown 3D hierarchical structure demonstrated extraordinary stability for water oxidation with negligible losses of photoactivity for 24 hours. The enhanced photostability was attributed to the formation of O vacancies in WO3 and multiple internal reflection in the 3D hierarchical structure.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Eunoak Park, Santosh S. Patil, Hyeonkwon Lee, Vijay S. Kumbhar, Kiyoung Lee
Summary: A novel photoanode material, tungsten oxide/bismuth vanadate/titanium oxide, has been synthesized through a combined hydrothermal-spin coating strategy, showing enhanced photoelectrochemical performance, decreased water oxidation kinetics, and improved photostability. The surface postmodification with a nanometer-thick layer of single-crystalline TiO2 significantly improves the stability, quantum efficiency, and electron transfer process, indicating a potential enhancement in photoelectrocatalytic activity.
Article
Chemistry, Analytical
L. T. Parvathi, M. Arunpandian, D. Sivaganesh, E. R. Nagarajan, Swaminathan Karuthapandian
Summary: In this study, Pd@WO3 nanocomposites were prepared using a simple hydrothermal method, showing high efficiency in degrading methyl orange and excellent photocatalytic performance.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Chiara Nomellini, Annalisa Polo, Camilo A. Mesa, Ernest Pastor, Gianluigi Marra, Ivan Grigioni, Maria Vittoria Dozzi, Sixto Gimenez, Elena Selli
Summary: The performance of composite WO3/BiVO4 photoanodes can be improved by nanostructuring the WO3 underlayer, mitigating charge transport and recombination issues.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Physics, Applied
Yuli Ma, Yun Hang Hu
Summary: Surface Cu2+ dopants on WO3 photoanodes, created using a simple hydrothermal method, significantly improve the interface charge transfer efficiency and act as adsorption and activation sites for intermediate species, decreasing Gibbs free energy and enhancing the oxygen evolution reaction activity. This leads to a 600% increase in incident-photon-to-current conversion efficiency under specific light irradiation and bias conditions.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Inorganic & Nuclear
Quanyou Zhao, Zhichao Hao, Yue Meng, Zhifeng Liu
Summary: This study successfully fabricated WO3 nanoflake photoanodes with high carrier separation efficiency and light harvesting by introducing surface and bulk O vacancies, enhancing the utilization of solar energy.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Multidisciplinary
Jiakun Zhang, Weixu Sun, Xin Ding, Kai Xia, Tao Liu, Xiaodong Zhang
Summary: WO3 films modified with cobalt-phosphate (Co-Pi/WO3) show high efficiency in photocatalytic organic wastewater degradation, with a degradation rate constant of 0.63311 h(-1) and a relatively good stability.
Article
Chemistry, Physical
Shouli Bai, Yanling Fang, Yingying Zhao, Yongjun Feng, Ruixian Luo, Dianqing Li, Aifan Chen
Summary: The novel ternary photoanode was prepared by modifying Bi nanoparticles on the type II heterojunction of WO3-ZnWO4 using drop casting and chemical impregnation methods. The photocurrent density of the ternary photoanode reached 3.0 mA/cm2 at 1.23 V (vs. RHE), which is 6 times higher than the WO3 photoanode. The incident photon-to-electron conversion efficiency (IPCE) at 380 nm wavelength increased by 2.8 times compared to the WO3 photoanode, thanks to the formation of a type II heterojunction and the modification of Bi NPs, resulting in enhanced light capture ability and improved carrier separation efficiency.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Environmental
Xuelan Hou, Zheng Li, Lijun Fan, Jiashu Yuan, Peter D. Lund, Yongdan Li
Summary: This study investigates the influence of Ti foil size on the light current response and micro dimensions of anodic TiO2 nanotube arrays, revealing a 50.6% increase in light current response and significant effects on various microscale parameters. Additionally, the relationship between length scales and PECWS efficiency is analyzed, emphasizing the need for quantitative models during scale-up processes.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
William A. Swansborough-Aston, Ayman Soltan, Ben Coulson, Andrew Pratt, Victor Chechik, Richard E. Douthwaite
Summary: The electrochemical Kolbe C-C coupling of carboxylic acids at Pt electrodes has been studied for over 150 years. It remains relevant today due to the increasing contribution of renewable electricity to clean chemical processes and the availability of carboxylic acids as precursors for chemical synthesis. This study introduces porous BiVO4 photoelectrodes that mediate C-C Kolbe coupling with high efficiency under visible light irradiation at low voltage.
Article
Environmental Sciences
Siti Nor Hidayah Arifin, Radin Maya Saphira Radin Mohamed, Adel Al-Gheethi, Chin Wei Lai, Yashni Gopalakrishnan, Nur Diyana Hairuddin, Dai-Viet Vo
Summary: This study investigated the degradation of triclocarban (TCC) in aqueous solution using a modified zeolite/TiO2 composite synthesized through electrochemical anodization. It was found that the reaction rate was significantly high at pH 11, with a loading size of 0.75 cm(2) and an initial TCC concentration of 5 ppm. Furthermore, high-performance liquid chromatography analysis revealed the presence of eleven intermediate products during the photocatalytic degradation of TCC.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
G. Ambarasan Govindasamy, Rabiatul Basria S. M. N. Mydin, Nor Hazliana Harun, Wan Nuramiera Faznie Wan Eddis Effendy, Srimala Sreekantan
Summary: This study investigated the physicochemical, bactericidal, and cytocompatibility properties of copper oxide (CuO) nanoparticles synthesized from giant milkweed medicinal plant. The results showed that CuO-500C nanoparticles exhibited improved bactericidal properties and cytocompatibility, making them suitable for wound dressing material application.
Review
Multidisciplinary Sciences
Farrokhfar Valizadeh Harzand, Seyyed Navid Mousavi Nejad, Aziz Babapoor, Seyyed Mojtaba Mousavi, Seyyed Alireza Hashemi, Ahmad Gholami, Wei-Hung Chiang, Maria Giovanna Buonomenna, Chin Wei Lai
Summary: Metal-organic frameworks (MOFs) are porous crystalline materials composed of metal and organic material, with properties such as tunability, large surface area, and high porosity. They have various applications in environmental protection, biosensors, regenerative medicine, medical engineering, cell therapy, catalysts, and drug delivery. MOF-based asymmetric membranes improve stability and specificity, while conjugated membranes increase the area of functional groups, making them attractive for drug and biosensor fabrication. MOF-assisted membranes provide a platform with different properties and characteristics for biomedical applications. The latest version of MOF materials/membranes has potential applications in medical engineering, cell therapy, drug delivery, and regenerative medicine.
Review
Chemistry, Physical
Zahra Pouramini, Seyyed Mojtaba Mousavi, Aziz Babapoor, Seyyed Alireza Hashemi, Chin Wei Lai, Yousef Mazaheri, Wei-Hung Chiang
Summary: The use of antibiotics and dyes has caused severe water pollution and health risks, necessitating their elimination from water sources. Adsorption and photodegradation are economical, simple, and reusable methods for removing harmful water contaminants. Metal-organic frameworks (MOFs), such as ZIF-8 and ZIF-67, are effective adsorbents and photocatalysts due to their high porosity, adjustability, and crystal structure. This article reviews the design and synthesis methods of ZIF-8 and ZIF-67 composites and discusses their role as adsorbents and photocatalysts in wastewater pollution removal, aiming to provide insights for the development of highly effective ZIF-8/67-based materials.
Review
Chemistry, Physical
Mojtaba Binazadeh, Jamal Rasouli, Samad Sabbaghi, Seyyed Mojtaba Mousavi, Seyyed Alireza Hashemi, Chin Wei Lai
Summary: Environmental pollution is a global issue, and strategies are needed to remove organic contaminants from water supplies. Photocatalytic membrane reactors (PMRs) have emerged as an efficient and cost-effective solution, with the ability to effectively remove contaminants while minimizing environmental impact. This study investigates the working and fouling mechanisms in PMRs, explores the interplay between fouling and photocatalytic activity, and highlights the significance of photocatalysis in membrane fouling mechanisms.
Article
Chemistry, Analytical
Masoomeh Yari Kalashgrani, Aziz Babapoor, Seyyed Mojtaba Mousavi, Solmaz Feizpoor, Seyyed Alireza Hashemi, Mojtaba Binazadeh, Wei-Hung Chiang, Chin Wei Lai
Summary: The performance of IRMOF-3 for removing naphthalene from aqueous media is evaluated for the first time in this study. IRMOF-3 shows high adsorption capacity for naphthalene removal, with an optimum removal efficiency of 80.96% at specific conditions. The results demonstrate that IRMOF-3 is an effective adsorbent for naphthalene removal from wastewater.
Article
Chemistry, Physical
Magdeline Tze Leng Lai, Kian Mun Lee, Thomas Chung Kuang Yang, Chin Wei Lai, Chia-Yun Chen, Mohd Rafie Johan, Joon Ching Juan
Summary: The construction of a p-n heterojunction photocatalyst successfully overcomes the low photo-catalytic activity caused by rapid charge recombination and limited photo-response range. In this study, an interlayer of expanded MoS2 coupled with Bi2WO6 (BW-IEM) photocatalyst was synthesized, achieving a Methylene Blue (MB) removal rate of up to 97% (5.18 x10-2 min-1) under the irradiation of low power 1W LED white light. The outstanding photocatalytic performance of the p-n heterojunctions BW-IEM photocatalyst is attributed to the enhancement of light harvesting, improvement in the separation of charge carriers, and coexistence of oxygen vacancy. The main reactive oxygen species (ROS) responsible for the photo-degradation of MB were center dot Oz radicals and center dot OH. This work provides a new strategy for the potential IEM photocatalyst as a matrix in a p-n heterojunction composite.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Polymer Science
Jin Kwei Koh, Chin Wei Lai, Mohd Rafie Johan, Sin Seng Gan, Wei Wei Chua
Summary: This study investigates the effects of silica on polyacrylamide (PAM) using comprehensive rheological data. Modified PAM shows distinct chemical structures compared to bare PAM, but both are hydrophilic fluids. The rheological performance of all modified PAM shows an undulated trend for all concentrations of silica and selected temperatures, but all modified PAM perform better than bare PAM. Therefore, a formulation of 0.5 wt% silica is promising for PAM modification, even simulating the performance of bored pile drilling. In terms of thermal stability, the rheological performance of bare PAM and modified PAM shows better results at 60 and 40°C, respectively.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Sina Yaghoubi, Aziz Babapoor, Sayyed Mojtaba Mousavi, Seyyed Alireza Hashemi, Vahid Rahmanian, Ahmad Gholami, Navid Omidifar, Mojtaba Binazadeh, Fatemeh Fallahi Nezhad, Yousef Mazaheri, Wei-Hung Chiang, Chin Wei Lai
Summary: Metal-organic framework (MOF) membranes, constructed with organic ligands and metal ions or clusters, have wide applications in biomedicine. However, there are still fundamental gaps in the studies on MOF membranes.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Review
Chemistry, Physical
Seyyed Mojtaba Mousavi, Seyyed Alireza Hashemi, Fatemeh Fallahi Nezhad, Mojtaba Binazadeh, Milad Dehdashtijahromi, Navid Omidifar, Yasamin Ghahramani, Chin Wei Lai, Wei-Hung Chiang, Ahmad Gholami
Summary: Metal-organic frameworks (MOFs) have shown great promise as carriers for drug delivery in various biological applications. Recent advancements in hybrid nanostructures have led to the development of innovative MOF-loaded nanocomposites with highly porous structures and low toxicity. This review study focuses on the use of MOF materials in cancer treatment, imaging, and antibacterial effects, particularly in oral cancer cells. It highlights the importance of accurately designing and producing anticancer and antibacterial agents to minimize side effects and maximize effectiveness, as well as the need for thorough testing of new anticancer drugs for efficacy and safety.
Review
Energy & Fuels
Shakeel Ahmed, Priynka Sharma, Satyaranjan Bairagi, Nelson Pynadathu Rumjit, Shivani Garg, Akbar Ali, Chin Wei Lai, Seyyed Mojtaba Mousavi, Seyyed Alireza Hashemi, Chaudhary Mustansar Hussain
Summary: Energy depository devices control energy utilization in various applications and the selection of materials for batteries and supercapacitors is crucial for enhancing energy storage capability. Traditional materials have environmental issues, leading to a switch towards eco-friendly biobased polymers. These polymers show great potential as energy repository dielectric layers in high-performing batteries and supercapacitors.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Geology
Wang DuiXing, Wang ZhiWei, Zhou WenHui, Zuo XiaoHong, Chen Siyu
Summary: This study provides evidence for magmatism associated with intracontinental extension by systematically studying the Late Jurassic mafic to ultramafic rocks in the Beidashan Taolai region. The results show that the Taolai hornblende gabbro, formed in the Late Jurassic, has geochemical properties consistent with high alumina mafic rocks. This suggests that they might have been produced by fractional crystallization of primary magma generated by decompressional partial melting of the asthenosphere mantle.
ACTA PETROLOGICA SINICA
(2023)
Review
Chemistry, Multidisciplinary
Lijing Wang, Yufei Wang, Zhengji Zhou, Wenhui Zhou, Dongxing Kou, Yuena Meng, Yafang Qi, Shengjie Yuan, Litao Han, Sixin Wu
Summary: Solar cells based on emerging kesterite Cu2ZnSn(S,Se)(4) (CZTSSe) materials have shown high power conversion efficiency (PCE) of 13.6% and have great potential in next-generation photovoltaic technologies. CZTSSe devices fabricated by a low-cost solution method have performed well, although not reaching as high efficiency as vacuum-deposited CIGS devices. The characteristics of the solvent used in the solution method play a crucial role in determining the properties of CZTSSe thin films.
Article
Pharmacology & Pharmacy
Wan Nuramiera Faznie Wan Eddis Effendy, Rabiatul Basria S. M. N. Mydin, Amirah Mohd Gazzali, Srimala Sreekantan
Summary: This study investigated the use of titania nanotube arrays (TNAs) for localised cisplatin (CDDP) treatment of nasopharyngeal carcinoma (NPC) cells. The results showed that the CDDP-loaded TNA nanosystem significantly inhibited NPC cell growth and caused cellular damage and shrinkage.
ADVANCED PHARMACEUTICAL BULLETIN
(2023)
Article
Nanoscience & Nanotechnology
Norhan Hussein, Rabiatul Basria S. M. N. Mydin, Wan Nuramiera Faznie Wan Eddis Effendy, Amirah Mohd Gazzali, Khairul Arifah Saharudin, Srimala Sreekantan
Summary: This study investigates the interaction of neuron-like SH-SY5Y cells on Titania nanotube arrays (TNA) surface in a nutrient-rich environment. The results show that FBS-loaded TNA exhibits zero-order FBS release and enhances the adhesion and proliferation of SH-SY5Y cells. The findings reveal the potential of TNA nano-topology in delivering FBS to neuronal cell lines and improving cellular proliferation activity.
INTERNATIONAL NANO LETTERS
(2023)
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)
