Article
Materials Science, Ceramics
Juan Agustin Badan, Guillermo Jauregui, Elena Navarrete-Astorga, Rodrigo Henriquez, Francisco Martin Jimenez, Daniel Ariosa, Enrique A. Dalchiele
Summary: The effect of solid-state thermal dewetting (SSD) parameters on the Ag NPs decorated ZnO NRs arrays was investigated, showing that bandgap tuning and light manipulation at the nanoscale can be achieved by controlling the size of Ag nanoparticles. Additionally, the surface plasmonic effect caused by silver nanoparticles attached to ZnO NRs arrays enhances room temperature photoluminescence (PL) emission and suppresses the visible light emission.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Faisal Shahzad, Anisa Qamar, Ghulam Nabi
Summary: Significant improvement in electron field emission properties of high density vertically aligned tellurium nanorods arrays has been observed by plasma treatment, suggesting their potential utilization in device fabrications.
Article
Engineering, Electrical & Electronic
Anu Katiyar, Nishant Kumar, R. K. Shukla, Anchal Srivastava
Summary: ZnO nanorods are grown along the c-axis using a sonicated sol-gel immersion method at a lower temperature, where the seed-layer precursor molarity and immersion time significantly impact the structural and morphological properties of the nanorods. These hexagonal nanorods exhibit green emission and persistent photoconductivity, which can be partially quenched through annealing. Annealing also helps improve transmittance and tunes the band gap value of bulk ZnO.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Yongjun Kim, P. R. Deshmukh, Weon Gyu Shin
Summary: Vertically aligned ZnO nanowires developed on Pt coated Si-wafer exhibit high photocurrent density and water splitting efficiency under light illumination, making them promising photoelectrodes for solar energy applications.
Article
Materials Science, Multidisciplinary
S. Kaya, O. Ozturk, L. Arda
Summary: Zn1-xNdxO (x = 0.00, 0.01, 0.03, 0.05, 0.07) nanorods (NRs) are grown vertically using a hydrothermal method with Nd3+ ions successfully substituted into the crystal lattice of ZnO. Significant changes are observed in the morphological and optical properties of the Nd substituted ZnO NRs. The magnetic parameters are found to be independent of Nd concentration, while a correlation is found between the morphological properties and the H-c value of Nd substituted ZnO NRs.
CURRENT APPLIED PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Yusuf Selim Ocak, Meryem Lamri Zeggar, Mustafa Fatih Genisel, Nilufer Uslu Uzun, Mohammed Salah Aida
Summary: Metal oxide nanostructures with high surface-to-volume ratios are ideal for gas sensor fabrication. By depositing ZnO thin films on vertically aligned silicon nanowires with varying etching times, sensitivity and specific reactive surface of CO2 sensors can be improved. The sensors show low response and recovery times compared to those reported in literature.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Chemistry, Physical
Murat Kurudirek, Sinem V. Kurudirek, Nolan E. Hertel, Anna Erickson, Paul J. Sellin, Sharmistha Mukhopadhyay, Aykut Astam, Christopher J. Summers
Summary: ZnO nanoarrays were grown via a low-temperature hydrothermal method. The addition of sodium citrate significantly reduced defects and improved the UV emission intensity at around 380 nm. The annealing process enhanced the emission of the UV peak by reducing defects in the nanostructure. The grown ZnO nanoarrays showed high-quality structural and optical properties and exhibited a good response to alpha particles.
Article
Materials Science, Multidisciplinary
Asmaa Al-Rasheedi, N. H. Alonizan, Akhlur Rahman Ansari, A. M. Abdel-Daiem, M. S. Aida
Summary: In this study, ZnO nanorods were successfully grown on glass substrate using the hydrothermal method, and the effect of zinc precursor salt concentration on nanorod properties was investigated. XRD, SEM, UV-visible optical transmittance and PL were used to analyze the structure and properties of the nanorods. The results showed that increasing the salt solution concentration led to the formation of ZnO nanorods with larger diameter and denser array.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Electrochemistry
J. Ridwan, J. Yunas, A. A. Umar, A. A. Mohd Raub, A. A. Hamzah, J. Kazmi, A. B. D. Nandiyanto, R. E. Pawinanto, I. Hamidah
Summary: This paper reports the synthesis and characterization of Cu-doped ZnO nanorods with enhanced photocatalytic activity in degrading industrial wastewater contaminations. The Cu doping affects the physical dimension of the rod structure and the optical properties of the ZnO nanorods. Photocatalytic degradation test results show that the highest methylene blue reduction of 97% is obtained using ZnO nanorods doped with 4 mol% Cu under 30 W UV exposure. The developed photocatalyst system could improve human health and environmental quality.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2022)
Article
Optics
Laishram Thoibileima Chanu, Naorem Khelchand Singh
Summary: A well-aligned vertical nickel oxide nanowire was fabricated using glancing angle deposition through electron-beam evaporation at room temperature. After annealing, an increase in crystallite size, a decrease in lattice strain and dislocation density, and an increase in particle size of the nanowire were observed. Photoluminescence emission experiments showed a decrease in defect-related transitions and a broadening of emission peaks after annealing.
JOURNAL OF LUMINESCENCE
(2023)
Article
Materials Science, Ceramics
Xianghui Zeng, Hui Chen, Jinfeng Wu, Wei Fang, Xing Du, Xuan He, Daheng Wang, Weixin Li, Lei Zhao
Summary: In this study, vertically aligned BNNSs were synthesized without any substrates using Fe-catalyzed thermal chemical vapor deposition method. The BNNSs exhibited improved crystallinity, high UV light emission, and excellent anti-oxidation behavior due to their unique structures. This environmentally friendly synthesis method allows for exploration of industrial upscaling applications.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Kamalesh Debnath, Tanmoy Majumder, Suvra Prakash Mondal
Summary: This paper investigates the morphology, crystallinity, chemical bonds, and photoelectrochemical properties of vertically-oriented TiO2 nanorods. The TiO2 nanorods exhibit high photosensing behavior and photoconversion efficiency. The carrier decay lifetime, interfacial characteristics, and charge transport mechanism are explored using various experimental techniques.
Article
Materials Science, Ceramics
S. Swathi, E. Sunil Babu, R. Yuvakkumar, G. Ravi, Arunachalam Chinnathambi, Sulaiman Ali Alharbi, Dhayalan Velauthapillai
Summary: Photoelectrochemical water splitting using semiconductor materials to generate hydrogen and oxygen is an important method. Synthesized materials can enhance bandgap by controlled size and morphology, improving PEC activity and photoconversion efficiency. Recently, ZnO nanostructures have attracted attention for their multifunctional properties and are considered outstanding for fabrication applications.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Abhisek Chakraborty, Andrea Orsini, Jyoti Prakash Kar, Francesco Gatta, Usman Khan, Christian Falconi
Summary: This study demonstrates a method of naturally promoting ultra-efficient, convection-assisted, seed-less synthesis of ZnO nanowires by heating the substrate with an adjacent temperature-controlled surface.
Article
Chemistry, Physical
Guozhen Liu, Yan Tang, Abdul Majid Soomro, Peng Shen, Shiqiang Lu, Yehang Cai, Hao Wang, Qianyi Yang, Han Chen, Yingbing Shi, Chun Lin, Feiya Xu, Fuchun Xu, Zhiming Wu, Xiaohong Chen, Duanjun Cai, Junyong Kang
Summary: Piezoelectric nanogenerators (PENGs) have the potential to harvest various types of mechanical energy and power portable devices and wearable electronic systems. In this study, a vertically aligned zinc oxide (ZnO) nanorods array was grown on polycrystalline copper paper using a two-dimensional (2D) hexagonal boron nitride (h-BN) monolayer. The h-BN layer effectively released strain in the ZnO nanoarray, resulting in highly aligned and ultralong nanorods. A flexible and transparent PENG based on the h-BN/ZnO nanoarray/h-BN sandwiched structure was fabricated, with the h-BN layer suppressing carrier movements and improving output voltage. The PENG exhibited a capacitance that increased exponentially with inversely proportional dielectric layer thickness, reaching 0.01 mF with a 2D h-BN monolayer. The multilayer h-BN based PENG achieved an open-circuit voltage of 5 V, a short-circuit current of -18 mu A, and a maximum output power density of 169 mW/cm2, showing practical potential for self-powered wearable devices in the future.
Article
Engineering, Electrical & Electronic
Kelson D. Chabak, Jonathan P. McCandless, Neil A. Moser, Andrew J. Green, Krishnamurthy Mahalingam, Antonio Crespo, Nolan Hendricks, Brandon M. Howe, Stephen E. Tetlak, Kevin Leedy, Robert C. Fitch, Daiki Wakimoto, Kohei Sasaki, Akito Kuramata, Gregg H. Jessen
IEEE ELECTRON DEVICE LETTERS
(2018)
Article
Engineering, Electrical & Electronic
S. Agarwal, M. S. Haseman, K. D. Leedy, D. J. Winarski, P. Saadatkia, E. Doyle, L. Zhang, T. Dang, V. S. Vasilyev, F. A. Selim
JOURNAL OF ELECTRONIC MATERIALS
(2018)
Article
Materials Science, Multidisciplinary
Eunsung Shin, KuanChang Pan, Weisong Wang, Guru Subramanyam, Vladimir Vasilyev, Kevin Leedy, Tony Quach
MATERIALS RESEARCH BULLETIN
(2018)
Article
Nanoscience & Nanotechnology
Seongman Cho, Mark A. Ciappesoni, Monica S. Allen, Jeffery W. Allen, Kevin D. Leedy, Brett R. Wenner, Sung Jin Kim
Article
Materials Science, Multidisciplinary
Justin W. Cleary, Evan M. Smith, Kevin D. Leedy, Gordon Grzybowski, Junpeng Guo
OPTICAL MATERIALS EXPRESS
(2018)
Article
Nanoscience & Nanotechnology
Joshua R. Hendrickson, Shivashankar Vangala, Chandriker Dass, Ricky Gibson, John Goldsmith, Kevin Leedy, Dennis E. Walker, Justin W. Cleary, Wonkyu Kim, Junpeng Guo
Editorial Material
Nanoscience & Nanotechnology
Kevin D. Leedy, Kookrin Char, Masataka Higashiwaki, Rebecca L. Peterson, James S. Speck
Article
Physics, Applied
J. Anders, M. Kazimierczuk, K. D. Leedy, N. Miller, T. Cooper, M. Streby, M. Schuette
APPLIED PHYSICS LETTERS
(2020)
Article
Physics, Applied
David C. Look, Kevin D. Leedy, Ray-Hua Horng, Marco D. Santia, Stefan C. Badescu
APPLIED PHYSICS LETTERS
(2020)
Article
Engineering, Electrical & Electronic
Neil A. Moser, Tadj Asel, Kyle J. Liddy, Miles Lindquist, Nicholas C. Miller, Shin Mou, Adam Neal, Dennis E. Walker, Steve Tetlak, Kevin D. Leedy, Gregg H. Jessen, Andrew J. Green, Kelson D. Chabak
IEEE ELECTRON DEVICE LETTERS
(2020)
Article
Nanoscience & Nanotechnology
Hyung Min Jeon, Kevin D. Leedy, David C. Look, Celesta S. Chang, David A. Muller, Stefan C. Badescu, Vladimir Vasilyev, Jeff L. Brown, Andrew J. Green, Kelson D. Chabak
Summary: This study successfully synthesized conductive Si-doped beta-Ga2O3 homoepitaxial films with high transparency and promising applications using pulsed laser deposition.
Article
Engineering, Electrical & Electronic
Abhijeet Barua, Ryan J. White, Kevin D. Leedy, Vidya Chidambaran, Rashmi Jha
Summary: Limited work has been done on the behavior of Schottky barrier field-effect transistors for neurotransmitter sensing applications. In this study, low-power deep subthreshold characteristics of thin film transistors made of InGaZnO4 were investigated for the sensitive and selective ex vivo detection of Dopamine. The devices showed promising detection metrics, including a low limit of detection, high binding affinity, and high sensitivity. Furthermore, the devices remained functional even after a regeneration test period, showcasing their potential for long-term use as biosensors.
IEEE SENSORS JOURNAL
(2022)
Article
Physics, Applied
Daram N. Ramdin, Micah S. Haseman, Hsien-Lien Huang, Kevin D. Leedy, Jinwoo Hwang, Leonard J. Brillson
Summary: Iridium is a common impurity in the edge-defined film-fed growth method for producing high-power Ga2O3 device structures, but its effects on carrier transport and recombination have not been fully explored. After nitrogen rapid thermal annealing, the optical and electronic nature of iridium in Ga2O3 and at Ir/Ga2O3 interfaces change on a near-nanometer to micrometer scale, influencing defect-assisted tunneling, diode rectification, and electric field strength preservation. Various measurement techniques reveal the diffusion and impact of iridium in crystal growth, providing insights for improving device performance.
JOURNAL OF APPLIED PHYSICS
(2022)
Proceedings Paper
Materials Science, Multidisciplinary
Jonathan P. McCandless, Kevin D. Leedy, Michael L. Schuette
OXIDE-BASED MATERIALS AND DEVICES IX
(2018)
Proceedings Paper
Materials Science, Multidisciplinary
Buguo Wang, Jason Anders, Kevin Leedy, Michael Schuette, David Look
OXIDE-BASED MATERIALS AND DEVICES IX
(2018)
