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Article
Materials Science, Multidisciplinary
Hasnaa H. Abdelhalium et al.
Summary: The influence of molybdenum (Mo) doping concentration on the structural, morphological, and optical properties of nanostructured pure and Mo-doped nickel oxide (NiO) thin films was investigated. The results showed that increasing Mo concentration led to a decrease in the optical band gap of NiO thin films and improved responsivity and external quantum efficiency (EQE) under UV illumination.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Chemistry, Physical
Alaa M. Ibrahim et al.
Summary: Hydrogen gas can be converted to electricity through fuel cells and is considered as a friendly energy source. In this study, pure Cu2O and Ni-doped Cu2O thin films were deposited on glass substrates using the RF/DC-sputtering technique for hydrogen production via the photoelectrochemical (PEC) water-splitting process. The Ni-doped Cu2O photoelectrodes showed improved performance in terms of photocurrent density and efficiency for hydrogen production compared to pure Cu2O. This research provides a cost-effective and efficient method for practical and industrial solar hydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Chemistry, Multidisciplinary
Ziliang Li et al.
Summary: Titanium dioxide (TiO2) as a wide-bandgap semiconductor material has gained significant attention for applications in fields like environmental and energy. Constructing high-performance photodetectors (PDs) based on TiO2 nanostructures with efficient microtopography and device configuration, while understanding key parameters influencing carrier behavior, is crucial for improved photoelectric performance and functional applications. This work provides an in-depth illustration of the electrical and optical properties of TiO2 nanostructures and advancements in technological issues for future applications.
ADVANCED MATERIALS
(2022)
Article
Materials Science, Ceramics
Chithira Venugopalan Kartha et al.
Summary: This study reports on the structural, optical, and electrical properties of CuxO thin films prepared by pulsed laser deposition technique. The growth conditions were carefully optimized to provide high conductivity and mobility, and the films showed photovoltaic response on specific substrates, paving the way for efficient solar cells made with Cu2O films.
CERAMICS INTERNATIONAL
(2022)
Article
Polymer Science
Suaad S. Shaker et al.
Summary: A high-responsivity bismuth oxide nanoparticles-decorated multiwalled carbon nanotubes/silicon heterojunction photodetector was prepared using two-step laser ablation in liquid. The structural properties of the hybrid nanoparticles were analyzed, and the presence of alpha-Bi2O3 nanoparticles and graphite at the C(002) plane was confirmed. Scanning electron microscopy revealed the formation of spherical Bi2O3 nanoparticles attached to well-dispersed multiwalled carbon nanotubes. The photodetector showed good responsivity and external quantum efficiency at a wavelength of 560 nm.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Gunjan Yadav et al.
Summary: This study demonstrates the fabrication of GaN-based ultraviolet metal-semiconductor-metal (MSM) photodetectors on Si(111) substrate using the Laser MBE technique. The effect of electrodes on the observed UV photoresponse was investigated by fabricating MSM photodetectors with Au, Pd, and ITO contacts. The results showed that ITO is the best-suited electrode material for the fabrication of photodetectors with high detectivity, sensitivity, and low dark current.
JOURNAL OF MATERIALS RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
P. V. Karthik Yadav et al.
Summary: Highly sensitive ultra-violet (UV) photodetectors with high detectivity and external quantum efficiency (EQE) are developed using Nb-doped TiO2 (TNO) films deposited on a Si/SiO2 substrate. The doping effect of Nb on TiO2 films improves photocurrent, detectivity, and EQE, while the metal-semiconductor-metal (M-S-M) structure of the device and the Si/SiO2 layer aid in reducing surface recombination.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Optics
Mohamed Ashour et al.
Summary: This paper experimentally investigated the linear and third-order optical nonlinearities of a pure CuO thin film deposited on a soda-lime glass substrate. The film's structure and linear optical properties were measured using XRD, surface profilometer, and UV-Vis spectrophotometer. The Z-scan technique was used to measure the film's nonlinear optical properties under different excitation wavelengths and incident laser powers. The results showed a reduction in nonlinear absorption coefficient and nonlinear refractive index with increasing excitation wavelength, and wavelength-dependent optical limiting of the CuO thin film.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Qi Li et al.
Summary: This study investigates the performance of a self-powered photodetector based on ZnO/CuO nanorods covered with Au nanoparticles. The coupling of LSPR, pyro-phototronic, and piezo-phototronic effects greatly improves the responsivity and detectivity compared to individual effects. These findings could be significant for the design of high-performance photodetectors using other nanomaterial systems.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Physics, Applied
Jialin Wang et al.
Summary: The researchers have successfully developed an efficient self-powered photoelectrochemical photodetector using a core-shell nanowire design. The photocurrent density is significantly enhanced, and the response time is short, achieving one of the shortest response times among similar devices. It also exhibits long-time stability and reusability.
APPLIED PHYSICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Esra Aslan et al.
Summary: This study shows that co-doping ZnO thin films with Sn and Ti can greatly enhance the photosensitivity and decay time of photodetectors. Co-doping also alters various optical properties of ZnO thin films, which are beneficial for optoelectronic applications.
Article
Chemistry, Analytical
Fabiane Fantinelli Franco et al.
Summary: Electrochemical voltammetric sensors are considered one of the most promising types of sensors for monitoring physiological analytes due to their portability, efficiency, selectivity, and simplicity. A Cu2O-based non-enzymatic portable glucose sensor was developed, demonstrating potential as a portable glucose monitoring device on biodegradable substrates through research on a novel redox mechanism.
Article
Nanoscience & Nanotechnology
Mingrui Luo et al.
Summary: An efficient, self-powered ultraviolet photoelectrochemical photodetector based on n-GaN/p-Cu2O core-shell nanowire p-n heterojunctions is demonstrated. The photocurrent under solar light is 2-3 times larger than that for GaN nanowires. The photocurrents under the solar light and the ultraviolet light fraction are comparable, 100 muA/cm(2) photocurrent density. The responsivity and specific detectivity reach 961.5 muA/W and 5.35 x 10(9) Jones under ultraviolet light, respectively. The rise/fall times are 42/65 ms. This is understood by efficient photocarrier separation, hole collection, and transport in the near-surface GaN/Cu2O p-n heterojunction.
Article
Chemistry, Analytical
Na Wang et al.
Summary: Three-dimensional hierarchical Cu2O-CuO microflowers assembled by nanorods were synthesized through an environmentally friendly hydrothermal route. The Cu2O-CuO microflowers-2 sensor exhibits excellent selectivity, repeatability, and long-term stability to NO2, with fast response and recovery time, even under high humidity conditions. Such superior sensing properties can be attributed to its unique structural advantages, more surface adsorbed oxygen, and the synergistic influence between the two-phase coexistence.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Physical
Alhoda Abdelmoneim et al.
Summary: In this study, nanostructured photoelectrodes of pure and (Fe, Ni) co-doped Co3O4 with varying doping levels and thicknesses were manufactured using the spray pyrolysis technique. By increasing the codoping ratio, the energy band gaps decreased, particle size reduced, and the existence of different elements confirmed. Among them, the 6%(Fe, Ni)-60ml Co3O4 photoelectrode exhibited the highest photocatalytic hydrogen output rate and photocurrent density, displaying promising potential for solar light-driven hydrogen generation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Multidisciplinary
R. Balakarthikeyan et al.
Summary: In this study, pure NiO and NiO:Cu-based photodetectors were fabricated with different concentrations of Cu dopants using a cost-effective nebulizer spray pyrolysis technique. The optical and UV sensing properties of the films were characterized, showing that 1.0% Cu doping significantly improved the physical properties of the NiO:Cu films, making them suitable for high-speed optoelectronic devices. The possible mechanism of photodetector performance under air and UV illumination was also discussed.
Review
Chemistry, Multidisciplinary
Chunlong Li et al.
Summary: In recent years, nanostructured perovskites have attracted significant attention as high-performance materials for photodetectors, showing excellent performance characteristics and great potential in photodetection applications.
Article
Chemistry, Analytical
Yang Zhao et al.
Summary: Nanoparticle plasmon scattering provides real-time imaging information on the formation process of noble metal-based nanomaterials. Metal nanoparticles generally exhibit higher catalytic activity on oxide carriers due to the synergistic effect of the interface between metal and oxide supporting pores. The prepared Cu2O/Au nano-composite shows higher electrocatalytic activity towards Glucose and can be conveniently controlled using scattering imaging strategy.
ANALYTICA CHIMICA ACTA
(2021)
Article
Engineering, Electrical & Electronic
Sabrine Derbal et al.
Summary: In this study, the effect of applied cathodic potential on the properties of electrodeposited p-type Cu2O thin films was investigated. By changing the applied potential, the phase structure and band gap energy of the Cu2O thin films were tuned, with better crystallization observed at specific cathodic potentials. Morphological observations revealed desert rose-like crystallites, while optical band gaps varied with the applied potential, indicating different levels of crystallization.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Deepak Suthar et al.
Summary: The research investigates the use of ZnTe layer to reduce losses in CdTe solar cells and optimizes the physical properties of ZnTe films to enhance device performance.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Medina Umar et al.
Summary: Thin films of copper oxide were grown using radio frequency-magnetron sputtering in an oxygen-argon environment onto silicon substrates, followed by post deposition annealing in vacuum at different temperatures. The study revealed that annealing in vacuum resulted in thin films with different morphological and stoichiometric properties. Additionally, the oxygen partial pressure during deposition affected the obtained oxide phases, with high pressure leading to the formation of two different oxide phases and low pressure leading to the formation of Cu2O thin films.
Article
Multidisciplinary Sciences
Asmaa M. Elsayed et al.
Summary: This work presents a novel photodetector based on TiO2/TiN nanotubes deposited on a porous aluminum oxide template. The photodetector showed high photoelectrical response and potential for broadband detection.
SCIENTIFIC REPORTS
(2021)
Article
Nanoscience & Nanotechnology
Yongsheng Duan et al.
Article
Chemistry, Physical
Qiushi Wang et al.
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Chemistry, Physical
Wael Z. Tawfik et al.
JOURNAL OF CATALYSIS
(2019)
Article
Engineering, Electrical & Electronic
H. T. D. S. Madusanka et al.
SENSORS AND ACTUATORS A-PHYSICAL
(2019)
Article
Materials Science, Multidisciplinary
Qiaoli Liu et al.
ADVANCED OPTICAL MATERIALS
(2019)
Article
Engineering, Electrical & Electronic
Wael Z. Tawfik et al.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2019)
Article
Chemistry, Physical
Pramod Patil Kunturu et al.
ACS APPLIED ENERGY MATERIALS
(2019)
Article
Nanoscience & Nanotechnology
Chenran He et al.
ACS APPLIED NANO MATERIALS
(2019)
Review
Chemistry, Multidisciplinary
Li Zhang et al.
Article
Nanoscience & Nanotechnology
Wael Z. Tawfik et al.
Article
Chemistry, Analytical
Tian Lan et al.
Article
Chemistry, Physical
Weina Shi et al.
APPLIED SURFACE SCIENCE
(2015)
Article
Chemistry, Multidisciplinary
M. Woelz et al.
Article
Materials Science, Multidisciplinary
Bharti Singh et al.
Article
Materials Science, Multidisciplinary
Jia Xu et al.
MATERIALS RESEARCH EXPRESS
(2014)
Article
Chemistry, Physical
C. Q. Zhang et al.
JOURNAL OF ALLOYS AND COMPOUNDS
(2007)
Article
Physics, Applied
MA Lourenço et al.
APPLIED PHYSICS LETTERS
(2005)
