Effect of boron doping on the structural, optical and electrical properties of ZnO nanoparticles produced by the hydrothermal method

Şenol, Sevim Demirözü; Öztürk, O.; Terzioğlu, C.

doi:10.1016/j.ceramint.2015.05.069

Cited by 64 publications

(14 citation statements)

References 29 publications

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“…Recently various techniques for the formation of Mg‐doped ZnO nanostructures and films are reported in the literature; such as the microwave heating method, auto combustion method, pulsed laser deposition (PLD), two‐step method, sol–gel method, chemical vapor deposition (CVD), and hydrothermal synthesis . Among these, the popularity of the hydrothermal method is increasing day by day because of its efficient and tolerable growth condition, good potential for environmentally‐safe production, suitability to any type of doping, easy control of dopant concentration, low cost with the use of water as a reaction medium, and mainly material synthesis for single crystal growth …”

Section: Introductionmentioning

confidence: 99%

Band Gap Engineering of Mg Doped ZnO Nanorods Prepared by a Hydrothermal Method

Şenol

Boyraz

Özuğurlu

et al. 2019

Crystal Research and Technology

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The effect of band gap on the structure, magnetic, and optical properties of Zn 1−x Mg x O nanorods synthesized by hydrothermal method using varying x-values from 0.00 to 0.05 with 0.01 step increment is studied. The structural phases of Zn 1−x Mg x O samples are determined by X-ray diffraction tool. The Rietveld analysis is performed for the selected Zn 0.95 Mg 0.05 O sample and all samples' phases are found as single phase. The concentration-dependent of lattice parameters, cell volumes, microstrain, and dislocation density, locality of the atoms and their displacement, and bond length in Zn 1-x Mg x O structures are detailed. Electron Spin Resonance (ESR) measurements are performed and analyzed through concentration dependence of the g-factor and the line-widths of pike to pike ( H PP ) of ESR spectra. A ferromagnetic behavior of the Zn 0.95 Mg 0.05 O nanorods is observed. The optical band gaps (E g ) of Zn 1-x Mg x O nanorods are obtained by the data taken from Ultraviolet-Visible (UV-VIS) diffuse reflectance spectroscopy. It is found that the E g -values increased with increasing amount of Mg elements in the structure.

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Section: Introductionmentioning

confidence: 99%

Band Gap Engineering of Mg Doped ZnO Nanorods Prepared by a Hydrothermal Method

Şenol

Boyraz

Özuğurlu

et al. 2019

Crystal Research and Technology

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“…The contribution of ionized impurity scattering to carrier mobility is inversely proportional to the carrier concentration. The details of this mechanism is explained in Ref . As seen in Figure , the variation of Hall mobility of the samples is inversely proportional to the carrier concentration ie the Hall mobility increases while the carrier concentration decreases and vice versa.…”

Section: Resultsmentioning

confidence: 99%

“…Especially, the Li and Mg codoped ZnO nanoparticles produced by hydrothermal method was investigated for the first time by our group in the literature . Hydrothermal synthesis is a popular method allowing easy control of dopant concentration and environmentally safe, inexpensive large scale production capability …”

Section: Introductionmentioning

confidence: 99%

Influence of Mg doping on the structural, optical, and electrical properties of Zn_0.95Li_0.05O Nanoparticles

Şenol

2018

Int J Applied Ceramic Tech

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This study investigates the effect of Li and Mg codoping on the structural, optical, and electrical properties of the ZnO. Zn0.95−xLi0.05MgxO (x = 0.00, 0.01, 0.02, 0.03) nanoparticles are synthesized by hydrothermal method. X‐ray diffraction (XRD) results confirmed that all samples are polycrystalline with a hexagonal‐wurtzite structure. The surface morphology of the samples were examined by Scanning Electron Microscopy (SEM). The SEM analysis showed that all samples exhibit cheese‐like plates and the plate sizes increase with Mg addition. Optical properties were examined by UV‐VIS diffuse reflectance spectroscopy. The optical measurements indicate that the reflectance edge of the samples have red shift up to 2% Mg doping level, but blue‐shift for 3% Mg doping. The optical band gap of Zn0.95−xLi0.05MgxO nanostructures are calculated as 3.227, 3.214, 3.209, and 3.221 eV with x = 0.00, 0.01, 0.02, 0.03 respectively. Electrical properties including the carrier concentration, Hall mobility, and resistivity were studied using Van‐der Pauw method. The temperature resistivity curves of the samples shown typical semiconductor behavior. The carrier concentration decreases with increasing doping level up to 2% Mg, and it slightly increases for 3% Mg. The variation of the Hall mobility for the samples is inversely proportional to the carrier concentration.

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“…As seen in Table 2, the lattice parameters of the films increase with increasing B content, which results from the fact that B 3+ (0.23 Å) and Zn 2+ (0.74 Å) have very different ionic radii [22]. Therefore, this large difference, as a result of the incorporation of greater amounts of B dopant into ZnO films, will cause both lattice distortion and tendency to create lattice defects and nucleation centers [23,24]. The crystal lattice distortion degree R can be determined by the following equation [25]:…”

Section: Structural Properties Of Electrodeposited Undoped and B Dopementioning

confidence: 98%

FESEM, XRD and DRS studies of electrochemically deposited boron doped ZnO films

Çağlar

Ilıcan

Çağlar

2017

Materials Science-Poland

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In this study, the effect of boron (B) incorporation into zinc oxide (ZnO) has been investigated. The undoped, 2 at.%. and 4 at.% B doped ZnO films were deposited on p-type silicon (Si) substrates by electrodeposition method using chronoamperometry technique. Electrochemical depositions were performed by applying a constant potentiostatic voltage of 1.1 V for 180 min at 90 °C bath temperature. To analyze the surface morphology, field emission scanning electron microscopy (FESEM) was used and the results revealed that while a small amount of boron resulted in smoother surface, a little more incorporation of boron changed the surface morphology to dandelion-like shaped rods on the whole surface. By using X-ray diffraction (XRD) analysis, the crystal structures of the films were detected and the preferred orientation of the ZnO, which exhibited polycrystalline and hexagonal wurtzite structure, changed with B doping. For the estimation of the optical band gap of obtained films, UV-Vis diffuse reflectance spectra (DRS) of the films were taken at room temperature and these data were applied to the Kubelka-Munk function. The optical band gap of ZnO narrowed due to incorporation of B, which was confirmed by red-shift.

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Effect of boron doping on the structural, optical and electrical properties of ZnO nanoparticles produced by the hydrothermal method

Cited by 64 publications

References 29 publications

Band Gap Engineering of Mg Doped ZnO Nanorods Prepared by a Hydrothermal Method

Band Gap Engineering of Mg Doped ZnO Nanorods Prepared by a Hydrothermal Method

Influence of Mg doping on the structural, optical, and electrical properties of Zn_0.95Li_0.05O Nanoparticles

FESEM, XRD and DRS studies of electrochemically deposited boron doped ZnO films

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Effect of boron doping on the structural, optical and electrical properties of ZnO nanoparticles produced by the hydrothermal method

Cited by 64 publications

References 29 publications

Band Gap Engineering of Mg Doped ZnO Nanorods Prepared by a Hydrothermal Method

Band Gap Engineering of Mg Doped ZnO Nanorods Prepared by a Hydrothermal Method

Influence of Mg doping on the structural, optical, and electrical properties of Zn0.95Li0.05O Nanoparticles

FESEM, XRD and DRS studies of electrochemically deposited boron doped ZnO films

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Influence of Mg doping on the structural, optical, and electrical properties of Zn_0.95Li_0.05O Nanoparticles