Applications of ZnO Nanorods and Nanowires - A Review

Witkowski, B.S.

doi:10.12693/aphyspola.134.1226

Cited by 22 publications

(11 citation statements)

References 213 publications

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“…As mentioned before, the literature on ZnO 1D nanostructures is vast; therefore, there are many reviews describing the different synthesis methods [ 34 , 35 ], optical [ 36 ] and electrical [ 37 ] properties, and practical applications of ZnO nanowires [ 38 , 39 ] and nanorods [ 40 ], including photocatalyst material [ 41 ], sensing platforms (chemical [ 42 ] and biological [ 43 , 44 ]), antibacterial element [ 45 ], light emissions sources(LEDs [ 46 ] and lasers [ 47 ]), dye-sensitized or thin film solar cells [ 48 ], field effect transistors [ 49 ], and piezoelectric nanogenerators [ 50 ].…”

Section: Introductionmentioning

confidence: 99%

Photoluminescence of ZnO Nanowires: A Review

et al. 2020

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One-dimensional ZnO nanostructures (nanowires/nanorods) are attractive materials for applications such as gas sensors, biosensors, solar cells, and photocatalysts. This is due to the relatively easy production process of these kinds of nanostructures with excellent charge carrier transport properties and high crystalline quality. In this work, we review the photoluminescence (PL) properties of single and collective ZnO nanowires and nanorods. As different growth techniques were obtained for the presented samples, a brief review of two popular growth methods, vapor-liquid-solid (VLS) and hydrothermal, is shown. Then, a discussion of the emission process and characteristics of the near-band edge excitonic emission (NBE) and deep-level emission (DLE) bands is presented. Their respective contribution to the total emission of the nanostructure is discussed using the spatial information distribution obtained by scanning transmission electron microscopy−cathodoluminescence (STEM-CL) measurements. Also, the influence of surface effects on the photoluminescence of ZnO nanowires, as well as the temperature dependence, is briefly discussed for both ultraviolet and visible emissions. Finally, we present a discussion of the size reduction effects of the two main photoluminescent bands of ZnO. For a wide emission (near ultra-violet and visible), which has sometimes been attributed to different origins, we present a summary of the different native point defects or trap centers in ZnO as a cause for the different deep-level emission bands.

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Section: Introductionmentioning

confidence: 99%

Photoluminescence of ZnO Nanowires: A Review

et al. 2020

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“…Compared to films, ZnO NWs have a number of advantages. This is a high mechanical stability and adsorption capacity [28], radioactive stiffness, penetration in the visible range of electromagnetism and a wide straight fenced zone [29], before that stink is characterized by a rapid collection of carriers generated across the entire device [30], large surface area [31] and low reflectance due to scattering and light capture [32].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

ZnO nanowires for photoelectric converter applications

Кидалов

Sosnytska

Dyadenchuk

et al. 2021

ijmph

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This work is focused on the creation and study of photosensitive structures based on zinc oxide nanofibers, which are promising for solar energy. Zinc oxide nanowires were obtained on the porous zinc selenide surface. The porous substrate was obtained by electrochemical etching of a low-resistance n-ZnSe plate (110) with a polished surface. Nanowires were deposited by radical-beam epitaxy. The annealing temperature was varied from 400°C to 500°C. The oxygen radical flux was 1.5•10 17 cm -2 s -1 . The process duration was 50 minutes. According to the scanning electron microscopy results, the nanowires length reaches 10 μm, the nanowires diameter is ~1 μm. The predominant X-ray diffraction reflex at 2θ=34.44° indicates the polycrystalline nature of the manufactured ZnO coatings with a wurtzite-type hexagonal lattice. The study of nanowires ZnO luminescence at room temperature contains an ultraviolet peak around 385 nm. This peak is related to the zinc oxide edge luminescence. Based on the fabricated structure, the design of the photoconverter was developed. The upper contact of the fabricated photoelectric converter was created by vacuum thermal sputtering of aluminum through a mask. The deposition was carried out at a substrate temperature of 200° C. Ohmic contacts were made using conductive silver paste. The reverse ohmic contact was formed by applying Al paste to the entire reverse side of the surface. The upper layer of the structure is an array of ZnO nanowires. The active base layer is ZnSe. The light volt-ampere characteristics of the obtained structure were measured in the AM 1.5 illumination mode. No-load voltage Uxx, short-circuit current Isc and the fill factor of the current-voltage characteristic FF of the solar element were measured. The efficiency of the manufactured photoconverter was 13.7 %.

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“…By the tag "solar photovoltaics," the most cited are also the studies on the properties of TiO2 [14,15] and ZnO [16,17] and heterojunctions based on them.…”

Section: Ukrainementioning

confidence: 99%

Renewable Energy in Ukraine-Poland Region: Comparison, Critical Analysis, and Opportunities

Nykyruy¹,

Yakubiv²,

Wisz³

et al. 2020

Renewable Energy - Resources, Challenges and Applications

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Fundamental and applied research on renewable energy is actively supported for the development of world science and maintaining the energy independence and security of different countries. This section analyzes the publications of scientists from two countries-Ukraine and Poland-in the field of "thermoelectricity," "photoelectricity," and "bioenergy" to find regularities in each state and to determine the prospects for joint research. Ukraine and Poland share a common border and have similar climatic conditions and historical heritage, but Poland is a member of the EU, and its legislation in the field of renewable energy complies with the regulations of the European Community. Ukraine is making every effort to develop renewable energy. Comparison of the state of research in these countries is also an example of the analysis of the situation at the borders of EU countries and may answer questions related to sustainable development, the mass transition to renewable energy, and the refusal to use fossil fuels and nuclear power plants. The analysis is based on the results of data published in the international scientific databases Web of Science and Scopus. The most advanced areas of research in each country are identified, analyzed, and aimed at practical application.

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Applications of ZnO Nanorods and Nanowires - A Review

Cited by 22 publications

References 213 publications

Photoluminescence of ZnO Nanowires: A Review

Photoluminescence of ZnO Nanowires: A Review

ZnO nanowires for photoelectric converter applications

Renewable Energy in Ukraine-Poland Region: Comparison, Critical Analysis, and Opportunities

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