Article
Materials Science, Multidisciplinary
Liu Liqing, Li Yongtao, He Xuemin, Zhang Hongguang, Shen Jianping
Summary: Vertically aligned ZnO nanowire arrays were obtained through a microwave-assisted heating method. The study observed changes in deep-level emission and near band edge emission, as well as a red-shift of the emission peaks with increased growth time. These findings have significant implications for optoelectronic applications.
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
(2022)
Article
Materials Science, Multidisciplinary
Aubry Martin, Audrey Potdevin, Francois Reveret, Emmanuel Centeno, Rafik Smaali, Fatima Omeis, David Riassetto, Elena Kachan, Yves Jourlin, Genevieve Chadeyron, Michel Langlet
Summary: An original ZnO nanowire architecture was developed using a soft chemistry approach, involving photoimprinting of a sol-gel ZnO-based photosensitive seed layer and subsequent localized hydrothermal growth of ZnO nanowires. The optimized protocol resulted in uniform and reproducible linear and periodic gratings of ZnO nanowires. Morphological and photoluminescence studies revealed the unique characteristics of the nanowire gratings, including a hedgehog-like profile and enhanced red part emission. Electromagnetic simulations demonstrated the role of the gratings in boosting the ZnO emission through light localization and diffractive mechanisms, allowing the extraction of resonant photons at specific angles and wavelengths.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Huiqin Zhou, Anlin Feng, Shanshan Ji, Yidong Hu, Qingyang Li
Summary: A ZnO nanowire array was synthesized within 10 minutes for the first time through electrodeposition of a Zn nanocrystal coating followed by a microwave hydrothermal treatment, offering the cheapest and fastest route from aqueous solutions so far. This simple, economical, efficient, flexible, and scalable method has promising prospects for industrial applications.
CHEMICAL COMMUNICATIONS
(2023)
Article
Materials Science, Ceramics
Shu Yang, Jie Wang, Chuanxin Liu, Pengrong Ren, Qing Yang, Gaoyang Zhao
Summary: ZnO sheets grown on an AAO template by a hydrothermal reaction method show tailored morphology based on reaction time and studied for photocatalytic properties. Analysis of growth process on AAO template includes dissolution of AAO, generation of ZnO sheets, and growth of ZnO layer, contributing to future research on ZnO morphology tailoring and growth control.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Dechmongkhon Kaewsuwan, Thipusa Wongpinij, Chanan Euaruksakul, Narong Chanlek, Narit Triamnak, Tossaporn Lertvanithphol, Mati Horprathum, Jakrapong Kaewkhao, Prapun Manyum, Rattikorn Yimnirun, Saroj Rujirawat
Summary: This study reports the growth and photoluminescence of tin dioxide (SnO2) nanostructures on a Si (001) substrate. The growth process involved thermal evaporation of tin and exposure to air at room temperature. The results showed that the growth followed the Volmer-Werber growth mode, leading to the formation of SnO2 island nanostructures with a smallest size of 86 +/- 10 nm and a surface coverage of 53% at a substrate temperature of 225 degrees C. The photoluminescence spectra exhibited emission peaks in the yellow and blue regions, with CIE (x,y) chromaticity values indicating white emission.
RADIATION PHYSICS AND CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
E. Zielony, M. A. Pietrzyk
Summary: This paper focuses on fundamental studies of ZnO/ZnMgO nanowire p-n junctions grown by MBE on Si substrate for UV light emitting sources. The investigation of defects responsible for optical emission from the nanowires was emphasized, and electro-optical properties of the diodes were studied through PL and DLTS. Fabrication of n-ZnMgO/p-Si p-n junctions and verification of their quality through electrical measurements were also conducted. PL experiments revealed excitonic transitions and a deep-level emission peak, with the depletion region located on the n-type side of the p-n junction according to C-V results. DLTS measurements identified electron traps related to ZnO, with parameters such as activation energies and capture cross sections determined.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2021)
Article
Biotechnology & Applied Microbiology
Dojalisa Sahu, Nihar Ranjan Panda
Summary: The study on the functional properties of zinc oxide nanorods shows great potential in various applications, such as fabrication of optoelectronic devices, degradation of organic dyes, and antibacterial defense.
CURRENT NANOSCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Lamia Al-Farsi, Tewfik M. Souier, Muna Al-Hinai, Myo T. Z. Myint, Htet H. Kyaw, Hisham M. Widatallah, Mohammed Al-Abri
Summary: The low-temperature microwave-assisted hydrothermal method was used to successfully grow pure and Al-doped ZnO nanorod arrays on glass substrates. The effects of doping and pH on the structural and optical properties of the samples were investigated, and a growth mechanism considering both the pH and Al-doping was proposed. Tuning the solution pH is crucial for growing well-aligned, high-quality nanorod arrays with enhanced optical absorption in the visible range. The production of these arrays would broaden the potential applications of ZnO and AZO nanorods.
Article
Chemistry, Multidisciplinary
Subhavna Juneja, Jaspal Singh, Roshni Thapa, R. K. Soni, Jaydeep Bhattacharya
Summary: The text discusses the trend of sustainable development driving modern technology, emphasizing the importance of adopting greener fabrication processes in the manufacturing sector. A bi-functional hybrid system was synthesized using a biosynthetic reduction strategy, showing strong surface-enhanced Raman scattering characteristics.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Optics
Shahad S. Khudiar, Uday M. Nayef, Falah A-H Mutlak, Sarah K. Abdulridha
Summary: ZnO nanostructures are effective materials for gas sensors, especially for NO2 gas sensors. This review article explores the advances in NO2 gas sensors based on ZnO nanoparticles, including surface morphology analysis, optical characteristics study, and electrical property measurements. Adjusting the operating temperature of the sensor can significantly impact its sensitivity, recovery time, and response time.
Article
Nanoscience & Nanotechnology
Haitao Wang, Zhongyu Hou, Changlin Li, Bo Wang
Summary: Research in plasma actuation is focusing on enhancing thrust density for aerodynamic flow control. A new method involving nanoscaled structures and voltage/frequency tuning has been proposed and experimentally evaluated. Results show a 78% increase in thrust with nanostructures, but a threshold effect with lower voltages and frequencies impacting thrust generation. Electric characteristics are not sensitive to nanostructures, demonstrating the effectiveness of incorporating nanoscaled structures into DBD plasma actuators to improve mechanical performance.
Article
Chemistry, Multidisciplinary
Renjie Wang, Shaobo Cheng, Srinivas Vanka, Gianluigi A. Botton, Zetian Mi
Summary: This study presents a method for fabricating InGaN solar cells on a Si substrate with improved open-circuit voltage and energy conversion efficiency, using Ti-mask selective area growth to form nanowire arrays for enhanced electrical and thermal conduction. The core-shell structure of the AlInGaN active segment suppresses nonradiative surface recombination and stable output characteristics were achieved under 30-Sun illuminations.
Article
Chemistry, Multidisciplinary
Yuxiao Zheng, Xueying Xu, Fengrui Li, Weilin Chen, Jian Gong, Chunlei Wang
Summary: This work presents a transparent photodetector based on binary metal oxides, where the addition of polyoxometalate (POM) modified ZnO NWs in the top layer increases UV absorption and creates an interlayer p-n junction, achieving high transparency and efficient photodetection capabilities.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Engineering, Electrical & Electronic
Shivangi S. Patel, Poornima Sengunthar, Nisha Thankachen, U. S. Joshi
Summary: A simple and reproducible method for producing high-quality zinc oxide nanorods (ZnO-NRs) was investigated. The growth process of hexagonal ZnO-NRs with c-axis orientation was optimized to study their optoelectronic properties. The results show that the growth temperature controls the surface density of ZnO-NRs, while the length is less affected. The ZnO-NRs exhibit high photosensitivity and have potential applications in optoelectronics and UV photo-detectors.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Physical
Amaresh Das, Durga Basak
Summary: This study investigates the evolution of various point defects in lithium ion-implanted zinc oxide nanorods through experimental and simulation methods. The results show that the lithium ions form Li-Zn acceptors and increase the structural disorder and number of oxygen vacancies in the nanorods. These acceptors and defects contribute to the high resistivity and change in photoluminescence emission of the nanorods.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)