Article
Physics, Condensed Matter
N. Chidhambaram, S. Senthil Kumari, W. Nirmala, S. Gobalakrishnan, T. Arun, R. Udayabhaskar, Mauricio J. Morel
Summary: This study presents an insightful investigation on the integrative impact of tin and graphene on the physical features of ZnO-Sn@Graphene nanopowders. The results demonstrate that the in situ synthesis strategy restricts the growth of nanoparticles on graphene sheets, resulting in dispersed semiconductor nanoparticles. Additionally, the amalgamation of ZnO-Sn with graphene significantly reduces the optical bandgap value and enhances the efficiency of photogenerated charge carriers separation and photoluminescence quenching.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Engineering, Electrical & Electronic
Tanushree Das, Dipteerekha Das, Kajal Parashar, S. K. S. Parashar, A. V. Anupama, Balaram Sahoo, Bikram Keshari Das
Summary: This study investigates the impact of magnesium doping on the structural, optical, and dielectric properties of zinc oxide. The results show that magnesium is successfully doped into the zinc oxide lattice, resulting in a decrease in the dielectric constant and high dielectric loss at elevated temperatures. Additionally, magnesium doping decreases the band gap of zinc oxide, altering its electronic properties and optical behavior.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
Shipra Choudhary, Dilruba Hasina, Mahesh Saini, Mukesh Ranjan, Satyabrata Mohapatra
Summary: ZnFe2O4-ZnO heterojunction photocatalysts were successfully fabricated using a simple co-precipitation method, showing superior photodegradation performance and stability for large-scale photocatalytic applications. The efficient sunlight utilization ability and suppression of recombination of charge carriers contribute to the improved photocatalytic performance of the ZnFe2O4-ZnO nanostructures. (C) 2021 Elsevier B.V. All rights reserved.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Yalambaku Rajesh, Md Ahamad Mohiddon, M. Ghanashyam Krishna
Summary: Shape control of ZnO and Au nanostructures on thin films can be achieved by microwave assisted hydrothermal synthesis with different precursors. Zinc nitrate precursor leads to rice grain structures, while zinc acetate precursor results in hexagonal shapes.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
P. K. Upadhyay, Neerav Sharma, Shashank Sharma, Ravi Sharma
Summary: This paper presents the PL and TL studies of undoped and Eu-doped ZnO nanophosphors, characterized by XRD and SEM. Eu-doped samples showed an additional XRD peak attributed to Europium oxide, with sizes ranging from 55 to 80 nm. The TL intensity increased linearly with gamma dose, suggesting potential for dosimetry applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Zhengguang Guo, Shouhong Chen, Ping Yang
Summary: The study revealed that ZnO with different dopants exhibit different optical properties, with Al-ZnO having high light transmittance, while Eu-ZnO and (Al, Eu)-ZnO showing stronger absorption in the visible and ultraviolet regions. This provides theoretical implications for the research on light protection devices.
Article
Materials Science, Multidisciplinary
M. Karyaoui, D. Ben Jemia, M. Daoudi, A. Bardaoui, A. Boukhachem, M. Amlouk, R. Chtourou
Summary: This paper investigates the physical properties of graphene oxide-doped zinc oxide thin films, finding that 2% GO doping demonstrates the best optoelectrical properties and has potential for future optoelectronic applications.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
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
Nanoscience & Nanotechnology
Reza Taheri Ghahrizjani, Mashhood Ghafarkani, Samira Janghorban, Mohsen Ameri, Mohsen Azadinia, Ezeddin Mohajerani, Mahdi Qaryan, Pegah Eslami, Hatef Fouladinasab
Summary: In this study, a ZnO-SrAl2O4:Eu nanocomposite was synthesized using a CO2 laser, showing enhanced optical properties and linearity in temperature alterations. The calibration of temperature based on phase angle shift alterations at different frequencies revealed that the curve obtained at 30 Hz frequency exhibited the highest linearity and accuracy.
ACS APPLIED NANO MATERIALS
(2021)
Article
Optics
Juby Alphonsa Mathew, Volodymyr Tsiumra, Jacek M. Sajkowski, Aleksandra Wierzbicka, Rafal Jakiela, Yaroslav Zhydachevskyy, Ewa Przezdziecka, Marcin Stachowicz, Adrian Kozanecki
Summary: The luminescence properties of Europium doped ZnO and ZnMgO thin films grown by Molecular Beam Epitaxy were studied, revealing that alloying Mg with ZnO significantly enhances the emission intensity of Eu3+ ions and efficient host to dopant energy transfer.
JOURNAL OF LUMINESCENCE
(2022)
Article
Engineering, Environmental
Chih-Chiang Wang, Fuh-Sheng Shieu, Han C. Shih
Summary: The research synthesized Ag-nanoparticle/ZnO nanostructures using a room-temperature sol-gel method, followed by thermal activation. Characterization using various analytical methods revealed that the formation of Ag nanoparticles on the ZnO nanoparticle surfaces significantly enhanced the chemi-degradation reactivity and photodegradation efficiency.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Shankari Nadupalli, Sergej Repp, Stefan Weber, Emre Erdem
Summary: This study investigates the intrinsic defect structure of ZnO and its influences. The results demonstrate that the concentration and position of intrinsic defects in ZnO can be tuned by changing the nanocrystal size, while emissions can be tuned by post-annealing treatments.
Article
Chemistry, Analytical
Shaik Hajira, Jillela Santhosh Vijitha, Sanjay Janrao Dhoble, Borelli Deva Prasad Raju, Busireddy Sudhakar Reddy
Summary: Red and green rare-earth ion (RE3+) (RE = Eu, Tb):MgLa2V2O9 micro-powder phosphors were synthesized using a solid-state chemical method. The phosphors exhibited crystalline structure and were characterized by various spectroscopic techniques. The emission mechanisms of Eu3+:MgLa2V2O9 and Tb3+:MgLa2V2O9 phosphors were explained using an energy level diagram.
Article
Chemistry, Physical
Lequn Li, Chujun Yao, Li Wu, Kai Jiang, Zhigao Hu, Ning Xu, Jian Sun, Jiada Wu
Summary: In this study, the enhancement of UV emission of ZnO was achieved by covering the ZnO nanorods with a ZnS coating. The results showed that the NBE emission of ZnO was significantly enhanced after the ZnS coating, both at room temperature and reduced temperatures.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Paula Hartnagel, Sandheep Ravishankar, Benjamin Klingebiel, Oliver Thimm, Thomas Kirchartz
Summary: In the past years, high-performance organic solar cells have emerged, reducing the amount of energetic disorder in structurally disordered semiconductors. It is crucial to accurately characterize this disorder when searching for future high-efficiency material systems. Common techniques include optical excitation and external voltage measurements, with the former yielding lower values of energetic disorder compared to the latter. Electrical measurements probe different energy ranges than optical measurements due to subband-gap density of states. Limitations and discrepancies between measurement techniques are explained based on electronic parameters.
ADVANCED ENERGY MATERIALS
(2023)