Article
Chemistry, Multidisciplinary
I. K. M. Reaz Rahman, Shiekh Zia Uddin, Matthew Yeh, Naoki Higashitarumizu, Jongchan Kim, Quanwei Li, Hyeonjun Lee, Kyuho Lee, Hoyeon Kim, Cheolmin Park, Jaehoon Lim, Joel W. Ager III, Ali Javey
Summary: In this study, a metal-oxide-semiconductor capacitor based on CdSe/CdS quantum dot thin films was used to investigate the influence of background charge on the luminescence efficiency and lifetime. By applying a gate voltage, the concentration ratio of charged and neutral quasiparticles in the quantum dots can be controlled, leading to modulation of the photoluminescence intensity and effective lifetime. The findings have potential applications in voltage-controlled electrochromics.
Article
Physics, Applied
Shuning Wang, Maojun Zheng, Dongkai Jiang, Hao Yuan, Hao Chen, Yunlong Fan, Fanggang Li, Wenlan Zhang, Li Ma, Wenzhong Shen
Summary: Zinc oxide (ZnO) is a promising UV detector material with advantages of wide bandgap, rich resources, simple preparation, and environmental friendliness. However, its complicated preparation processes and complex device structures have limited its application. In this study, a high-performance UV detector based on graphene quantum dot-sensitized GaP@ZnO nanocomposite was successfully fabricated using a simple spin-coating method. This research provides a new method for preparing high-performance optoelectronic devices using material composites and surface modification.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
S. D. Lokhande, M. B. Awale, G. Umadevi, V. D. Mote
Summary: This study investigates the impact of nickel doping on the properties of zinc oxide thin films, including structural, optical, morphological, and gas sensing properties. The results show that nickel doping affects the lattice parameters and preferred orientation of the films, and improves the gas sensing response.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Chemistry, Physical
Yuling Wei, Leshuang Wang, Changlong Chen
Summary: Yttrium doped ZnO nanorod array films grown hydrothermally on fluorine doped tin oxide substrates exhibit enhanced photoelectrochemical water splitting performance, attributed to improved light absorption, increased conductivity, and prolonged carrier lifetime caused by yttrium doping. The yttrium doped samples show higher photocurrent density under illumination compared to undoped samples, making them promising platforms for various photocatalytic applications beyond photoelectrochemical water splitting.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Review
Chemistry, Multidisciplinary
Alexandra M. L. Oliveira, Monica Machado, Gabriela A. Silva, Diogo B. Bitoque, Joana Tavares Ferreira, Luis Abegao Pinto, Quirina Ferreira
Summary: Graphene oxide, with its unique properties, has been widely used in nanomedicine as a component of drug delivery systems. Research studies have demonstrated its effectiveness in controlling drug dosage and timely delivery when incorporated into multilayer films. This review provides an overview of the latest research developments in biomedical applications using graphene oxide for drug delivery systems, including film production and characterization, in vitro and in vivo experiments, main applications of graphene oxide in biomedical devices, and its biocompatibility properties.
Article
Nanoscience & Nanotechnology
Tong Chen, Siwei Yang, Jing Wang, Wei Chen, Lifu Liu, Yuan Wang, Shijie Cheng, Xu Zhao
Summary: Inspired by the biological neuromorphic system, a brain-inspired artificial synapse based on solution-processed MgO-GOQD memristor was developed, demonstrating essential biosynaptic functions and stable behavior in flexible artificial neural networks.
ADVANCED ELECTRONIC MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Jian-Fu Tang, Yi-Da Sie, Zong-Liang Tseng, Ja-Hon Lin, Lung-Chien Chen, Cheng-Liang Hsu
Summary: In this study, a photodetector and humidity sensor based on zinc oxide nanowires (ZnO NWs) with CsPbBr3 perovskite quantum dots (PQDs) were developed. The excellent optoelectronic properties of PQDs make them ideal for semiconductor sensors. The experimental results showed that the performance of PQD/ZnO NWs was superior to that of ZnO NWs, especially in terms of humidity response and photocurrent.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Mengyu Chen, Xingtong Chen, Wenchen Ma, Xiaojuan Sun, Longjia Wu, Xiongfeng Lin, Yixing Yang, Rui Li, Dongyang Shen, Yu Chen, Song Chen
Summary: A solution to the problems caused by ZnO nanoparticles is reported, using tetramethylammonium hydroxide to stabilize SnO2 nanoparticles and induce charge injection. SnO2-based devices exhibit high electroluminescence efficiency and long operational lifetime, with superior shelf stability, enabling QLEDs with real stability.
Article
Materials Science, Multidisciplinary
Refik Arat, Guobin Jia, Jan Dellith, Andrea Dellith, Jonathan Plentz
Summary: Transparent conductive hybrid thin films based on silver nanowires, zinc oxide, and graphene were prepared using solution processing methods. The films were characterized by XRD, SEM, conductivity measurement, and stability analysis, showing that graphene flakes coating improved the conductivity and stability of the hybrid films.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Chemistry, Analytical
Guanglu Lei, Chengming Lou, Xianghong Liu, Jiayue Xie, Zishuo Li, Wei Zheng, Jun Zhang
Summary: Thin film technology, specifically tungsten trioxide (WO3) as a metal oxide semiconductor (MOS) sensing material, shows great promise for gas sensor applications. This review provides an overview of WO3 thin films, their sensing mechanisms, preparation methods, gas sensing performances, and strategies for improving sensor properties. Future perspectives and challenges of WO3 thin film sensors are also discussed.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Multidisciplinary
John Paul, Kasinathan Dhivyaprasath, Mahalingam Ashok, Maniyeri Chandroth Santhosh Kumar
Summary: The photocatalytic degradation of methylene blue dye was investigated using pure and graphene oxide incorporated zinc oxide thin films as catalysts. The graphene oxide content in the precursor solution was varied and thin films were prepared using the spray pyrolysis technique. The highest graphene oxide content resulted in a degradation efficiency of 91.2% under solar irradiation.
Article
Chemistry, Physical
Andreas Nordenstrom, Nicolas Boulanger, Artem Iakunkov, Igor Baburin, Alexey Klechikov, Alexei Vorobiev, Alexandr Talyzin
Summary: The intercalation of methylene blue (MB) into thin multilayered graphene oxide (GO) films was found to be significantly stronger than that of crystal violet (CV) and rose bengal (RB). This is attributed to the difference in the geometrical shape of planar MB compared to essentially nonflat CV and RB molecules. Additionally, graphite oxides and restacked GO films exhibit different sorptions of MB.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Crystallography
Grazia Giuseppina Politano, Carlo Versace
Summary: This study investigates the electrical and optical characteristics of GO and RGO films by performing electric impedance measurements, optical microscopy, and variable angle spectroscopic ellipsometry tests. The results show that the electric resistance of RGO films is significantly lower than that of GO films. Additionally, thermal annealing enhances the optical conductivity and absorption coefficient of GO films.
Article
Energy & Fuels
Muhammad Kashif, Erdawaty Jafaar, Siti K. Sahari, Foo W. Low, Nguyen D. Hoa, Awais Ahmad, Anees Abbas, Zainab Ngaini, Muhammad Shafa, Ahsanulhaq Qurashi
Summary: Introducing a new organic compound K-Azo enhances the electrical and optical performance of graphene oxide and reduced graphene oxide nanostructured films. The presence of the organic sensitizer significantly improves the conductivity of the thin films, offering potential applications in photovoltaic solar cells. The long-range pi-electron delocalization in the organic sensitizer contributes to the improved conductivity of the graphene oxide and reduced graphene oxide films.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Physical
Manh Hoang Tran, Taehyun Park, Jaehyun Hur
Summary: By incorporating graphene quantum dots, the ZnO film's physical and chemical characteristics are improved, leading to enhanced transport of photogenerated carriers and longer charge lifetimes. Under appropriate GQD concentration, the ZnO:GQD/Poly-TPD photodiode shows balanced energy structure, increased mobility, and reduced charge recombination compared to other devices, demonstrating excellent performance in UV detection.
APPLIED SURFACE SCIENCE
(2021)
Article
Physics, Applied
Mehdi Hesani, Ahmad Yazdani, Kourosh Rahimi
JOURNAL OF APPLIED PHYSICS
(2019)
Article
Materials Science, Multidisciplinary
Kourosh Rahimi, Ahmad Yazdani
Article
Engineering, Electrical & Electronic
Samira Sharifi, Ahmad Yazdani, Kourosh Rahimi
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2020)
Article
Materials Science, Multidisciplinary
Asiye Shokri, Ahmad Yazdani, Kourosh Rahimi
MATERIALS TODAY COMMUNICATIONS
(2020)
Article
Multidisciplinary Sciences
Samira Sharifi, Ahmad Yazdani, Kourosh Rahimi
SCIENTIFIC REPORTS
(2020)
Article
Materials Science, Multidisciplinary
Kourosh Rahimi
Summary: The research proposed a vdW g-ZnO/2H-TiS2 heterostructure adjustable by electric field and strain, featuring a narrow indirect bandgap and large potential drop for optoelectronic devices. Additionally, the study also revealed the tunability of the bandgap and absorption of the heterostructure under different electric fields and strains.
Article
Nanoscience & Nanotechnology
S. Hamidreza Hoseyni, Kourosh Rahimi, Behrad Barakati, Ali Sadeghi, S. Majid Mohseni
Summary: Magnetic anisotropy (MA) is crucial in the design of future spintronic and magnetic devices, especially in structures with few angstroms thickness. Using first-principles calculations, we found that the interface MA in Co/phosphorene heterostructures is comparable to that of ferromagnet/heavy-metal interfaces, despite the weak spin-orbit coupling strength of phosphorus atoms. Furthermore, the magnetic anisotropy energy (MAE) of the system can be significantly increased by applying strain, with the MA varying from perpendicular to in-plane directions.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2021)
Article
Multidisciplinary Sciences
Samira Sharifi, Kourosh Rahimi, Ahmad Yazdani
Summary: Manganese ferrite (MnFe2O4) nanoparticles were synthesized and combined with exfoliated MoS2 nanosheets to create a nanocomposite for supercapacitors. The addition of MoS2 significantly increased the specific capacitance of MnFe2O4, leading to higher energy density, power density, and improved stability, making it suitable for supercapacitors.
SCIENTIFIC REPORTS
(2021)
Article
Materials Science, Multidisciplinary
Mehdi Hesani, Kourosh Rahimi, Ahmad Yazdani
Summary: The study investigated the relationship between charge doping and correlations in BaFe2As2 using DFT+DMFT, showing that electronic correlations strengthen systematically from electron-doping to hole-doping regimes. Due to its multi-orbital nature, correlations in BaFe2As2 are orbital-dependent, with the Fe-3d(xy) orbital exhibiting the most correlation.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Physics, Condensed Matter
Asiye Shokri, Ahmad Yazdani, Kourosh Rahimi
Summary: The study reveals that the antimonene/palladium ditelluride heterostructure exhibits semiconductor properties and can be controlled to form different types of semiconductors or conductors by changing external electric field and strain parameters. Additionally, the heterostructure shows absorption of light in the ultraviolet and visible regions, indicating its potential for electronic and optoelectronic applications.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Chemistry, Inorganic & Nuclear
Nasrin Abdollahi, Azar Ostovan, Kourosh Rahimi, Mansour Zahedi, Alireza Z. Moshfegh
Summary: Metal-organic frameworks (MOFs) have shown promising potential as photocatalysts for environmental remediation. In this study, TMU-32 MOF exhibited high photocatalytic activity due to its large specific surface area and appropriate band gap energy. Fe3O4@TMU-32 nanocomposite, prepared by combining TMU-32 with Fe3O4 nanoparticles, showed good recyclability and photocatalytic efficiency. This research provides valuable insights for the development of efficient photocatalysts.
INORGANIC CHEMISTRY
(2021)
Article
Energy & Fuels
Mohamad Taghi Dejpasand, Samira Sharifi, Esmaiel Saievar-Iranizad, Ahmad Yazdani, Kourosh Rahimi
Summary: This study investigated the effect of boron and nitrogen doping on the electrochemical energy storage properties of graphene quantum dots (GQDs), finding that N-GQDs showed higher specific capacitance, specific energy, and specific power compared to GQDs and B-GQDs. Additionally, N-GQDs exhibited better cycling stability with 80% capacity retention.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Physical
Kourosh Rahimi, Alireza Z. Moshfegh
Summary: The vdW heterostructure of hg-C3N4/g-ZnO has the potential to be a solar-driven photocatalyst for water-splitting reaction with reduced electron-hole recombination rate. By applying external perpendicular electric fields and biaxial strains, band alignment, bandgap energy, and transition type can be tuned to optimize efficiency for water-splitting photocatalysis.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Asiye Shokri, Ahmad Yazdani, Kourosh Rahimi
MATERIALS CHEMISTRY AND PHYSICS
(2020)
Article
Chemistry, Physical
Kourosh Rahimi
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2020)
Article
Materials Science, Multidisciplinary
Deyong Zheng, Huihui Jin, Yucong Liao, Pengxia Ji
Summary: In this study, a highly stable and efficient catalyst, fluorine-doped Co3O4 (F-Co3O4), was developed for hydrogen production by water electrolysis. The F-Co3O4 catalyst exhibited a remarkable reduction in overpotential and demonstrated excellent stability for over 100 hours.
Article
Materials Science, Multidisciplinary
Ziwen Lv, Jintao Wang, Fengyi Wang, Jianqiang Wang, Fuquan Li, Hongtao Chen
Summary: Adding Cu6Sn5 nano particles can effectively inhibit the overgrowth of intermetallic compounds at the interfaces of solder joints in electronic devices, providing a solution to this issue. A new growth mechanism of intermetallic compounds at the interfaces was identified.
Article
Materials Science, Multidisciplinary
Jun Wang, Jiawei Chen, Wanru Liao, Fangyang Liu, Min Liu, Liangxing Jiang
Summary: A BiOI/AgI/Ag plasmonic heterostructure photocathode was successfully designed through electrodeposition, ion-exchange, and illumination methods. This photocathode exhibits superior performance in photoelectrochemical water splitting.
Article
Materials Science, Multidisciplinary
Xiaoxiao Liu, Xianxian Zhou, Xiaotao Ma, Qinbo Yuan, Shibin Liu
Summary: In this study, the authors propose a method to accelerate the reaction of polysulfides in lithium-sulfur batteries using a Ni@OC Mott-Schottky heterojunction as a catalyst. The experimental results demonstrate that the charge redistribution at the Ni@OC interface accelerates electron transfer and enhances catalytic activity, leading to improved reaction kinetics and battery performance.
Article
Materials Science, Multidisciplinary
Dayou Ma, Mohammad Rezasefat, Joziel Aparecido da Cruz, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: The matrix has a significant effect on the impact resistance of composite materials. Replacing a brittle polymer with a more flexible one can improve impact resistance, but it poses challenges to standard testing methods. This study designs a new fixture for testing the low-velocity impact of soft composites and investigates the effect of the fixture on the mechanical performance.
Article
Materials Science, Multidisciplinary
Lingchang Wang, Qihang Yang, Huzhen Li, Ming Wei, Qian Wang, Zhenzhong Hu, Mengmeng Zhen
Summary: Bronze titanium dioxide (TiO2(B)) is a promising anode material for lithium-ion batteries due to its high specific capacity. However, its practical applications are hindered by poor conductivity and limited electrochemical kinetics. In this study, TiO2(B)-carbon nanosheets heterostructures are synthesized to enhance the cycling performance and rate capability of TiO2(B).
Article
Materials Science, Multidisciplinary
Atul Thakur, Ritesh Verma, Ankush Chauhan, Fayu Wan, Preeti Thakur
Summary: In this study, BaFe12O19 and BaFe12O19: Epoxy (50:50) nanocomposites were synthesized using the co-precipitation method. The structural information and material properties, such as crystallite size and electrical conductivity, were characterized by XRD, FESEM, EDX, and TEM techniques.
Article
Materials Science, Multidisciplinary
Jingyu Wu, Xinyan Ma, Yong Yang
Summary: A well-defined CoS2@NC(CS-500) hierarchical binder-free catalyst cathode is constructed through in-situ grown of ZIF-67 on carbon cloth and high-temperature carbonization. The cathode shows excellent reaction kinetics and electrochemical performance, providing inspiration for developing advanced Li-CO2 battery catalysts.
Article
Materials Science, Multidisciplinary
Svetlana M. Posokhova, Vladimir A. Morozov, Kirill N. Boldyrev, Dina Deyneko, Erzhena T. Pavlova, Bogdan I. Lazoryak
Summary: This study explores the impact of synthesis method and composition on the structure and luminescence properties of K5Eu1-xHox(MoO4)4 with the palmierite-type matrix. The co-doping of Eu3+ and Ho3+ ions plays a critical role in manipulating charge transfer and luminescence efficiency in the visible and infrared regions.
Article
Materials Science, Multidisciplinary
Jian Wang, Yeting Tao, Jingsheng Wang, Youtian Tao
Summary: A new electron-transport material iTPyBI-CN is developed through non-catalytic C-N coupling reaction. It exhibits better electroluminescence efficiency in organic light-emitting diodes compared to the commercial material TPBI, due to its twisted geometry and higher energy levels.
Article
Materials Science, Multidisciplinary
Tao Zhu, Feng Huang, Shuo Li, Yang Zhou
Summary: This article combines XRD analysis and microscopic structural observation to investigate the changes in limestone after high-temperature treatment. It finds that 500 degrees C is the critical temperature for crystalline and spatial arrangement changes in limestone, and the thermal conductivity, specific heat capacity, and heat storage coefficient gradually decrease after thermal treatment.
Article
Materials Science, Multidisciplinary
Muhammad Haekal Habibie, Fransiska Sri Herwahyu Krismastuti, Abdi Wira Septama, Faiza Maryani, Vivi Fauzia
Summary: This study focuses on the synthesis of zinc oxide nanostructure from zinc recovered from galvanization ash and highlights its potential as a sustainable source of zinc and as an antibacterial agent.
Article
Materials Science, Multidisciplinary
Jingyi Li, Yixin Xing, Wei Gu, Shousi Lu
Summary: In this study, PC@CaP microparticles were fabricated using biomimetic mineralization. The results showed that under environmental stress, PC@CaP exhibited improved stability and antioxidative activity, indicating its potential use in high-added value fields.
Article
Materials Science, Multidisciplinary
Yan Liu, Shunyou Chen
Summary: In this study, TNTs were used as a drug carrier and modified with ZIF-8 and silk fibroin to obtain a new drug loading platform. The results showed that this drug-loaded platform had a good drug release effect in vitro and could promote cell proliferation and osteogenic differentiation.
Article
Materials Science, Multidisciplinary
Chunhui Zhu, Wentao Wang, Qing Zhen, Xinning Huang, Shixin Li, Shaochang Wang, Xiaoping Ma, Xiaoxia Liu, Yalong Jiao, Kai Sun, Zhuangzhi Li, Huaixin Yang, Jianqi Li
Summary: A type of stacking fault is revealed in e-InSe crystal, which is associated with a small stacking-fault energy and shows exceptional plasticity.
