Optical and magnetic properties of CuO nanowires grown by thermal oxidation

Vila, María; Dı́az-Guerra, C.; Piqueras, J.

doi:10.1088/0022-3727/43/13/135403

Cited by 56 publications

(20 citation statements)

References 34 publications

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“…This kind of assignment was applied by some groups. Vila et al [ 36 ] observed luminescence bands centered at 1.33, 1.23, and 1.11 eV in CuO nanomaterial and suggested that the emission with highest energy corresponds to near band edge transition in CuO while the two other emissions are most probably introduced by oxygen vacancies and oxygen on copper antisite defects [ 35 , 37 , 38 ].…”

Section: Fundamental Propertiesmentioning

confidence: 99%

Copper Oxide Nanomaterials Prepared by Solution Methods, Some Properties, and Potential Applications: A Brief Review

Tran

Nguyen

2014

International Scholarly Research Notices

170

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Cupric oxide (CuO), having a narrow bandgap of 1.2 eV and a variety of chemophysical properties, is recently attractive in many fields such as energy conversion, optoelectronic devices, and catalyst. Compared with bulk material, the advanced properties of CuO nanostructures have been demonstrated; however, the fact that these materials cannot yet be produced in large scale is an obstacle to realize the potential applications of this material. In this respect, chemical methods seem to be efficient synthesis processes which yield not only large quantities but also high quality and advanced material properties. In this paper, the effect of some general factors on the morphology and properties of CuO nanomaterials prepared by solution methods will be overviewed. In terms of advanced nanostructure synthesis, microwave method in which copper hydroxide nanostructures are produced in the precursor solution and sequentially transformed by microwave into CuO may be considered as a promising method to explore in the near future. This method produces not only large quantities of nanoproducts in a short reaction time of several minutes, but also high quality materials with advanced properties. A brief review on some unique properties and applications of CuO nanostructures will be also presented.

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Section: Fundamental Propertiesmentioning

confidence: 99%

Copper Oxide Nanomaterials Prepared by Solution Methods, Some Properties, and Potential Applications: A Brief Review

Tran

Nguyen

2014

International Scholarly Research Notices

170

View full text Add to dashboard Cite

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“…In order to utilize CuO for electrochemical and photoelectrochemical applications, it needs to be prepared as nanostructured thin films. Thin films of cupric oxide have been prepared by a number of techniques including pulsed laser deposition [3], thermal oxidation [4], ultrasonics spray pyrolysis [5], chemical bath deposition [6], microwave [7], sol-gel [8], electro-deposition [9], hydrothermal [10], sputtering [11], solvothermal [12], and successive ionic layer adsorption and reaction method [13]. All these preparation techniques offer distinct advantages depending on the kind of application.…”

Section: Introductionmentioning

confidence: 99%

Studies on chemical bath deposited CuO thin films for solar cells application

Veerubhotla¹,

Neyvasagam²,

Chandramohan

et al. 2015

J Mater Sci: Mater Electron

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CuO thin films were deposited onto glass substrates using Chemical bath deposition technique by varying the pH of the solution. Structural, optical and electrical properties of the synthesized films were studied as a function of the solution pH. X-ray diffractometry, scanning electron microscopy, UV-Vis spectroscopy and Hall effect measurements were used to explore the structure, morphology, optical and electrical properties of the films, respectively. All the films have exhibited orthorhombic structure with preferential orientation along the (111) plane. X-ray line profile analysis has been carried out to determine the microstructural parameters such as crystallite size, RMS microstrain, dislocation density and stacking fault probability. Morphological studies have revealed that the uniformity of the film surface, and the average particle size was found to increase with solution pH. Optical parameters such as band gap, refractive index, extinction coefficient, real and imaginary dielectric constants and optical conductivity have been estimated from optical absorption measurements. Carrier concentration and mobility of charge carriers estimated from the Hall measurement were found to be 7.43 9 10 13 cm -3 and 11.84 cm 2 V -1 s -1 respectively for CuO films prepared at solution pH 11.0.

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“…Cupric oxide, CuO, which is a p-type semiconductor [1] (indirect bandgap of 1.2 to 1.5 eV) has been widely exploited for devices applications, such as an active electrode material for Li-ion batteries, field emission [FE]emitters, heterogeneous catalysts, gas sensors, hetrostructure and solar cells [2][3][4][5][6][7]. Several methods have been developed to prepare CuO nanostructures, such as chemical vapor deposition (CVD) [8], laser vaporization [9], electrochemical techniques [10], hydrothermal treatment [11] inexpensive wet chemical method [12], thermal oxidation methods [13] and the Sol-Gel method [14].…”

Section: Introductionmentioning

confidence: 99%