Tuning Quantum Corrections and Magnetoresistance in ZnO Nanowires by Ion Implantation

Zeng, Yu‐Jia; Pereira, L. M. C.; Menghini, Mariela; Temst, Kristiaan; Vantomme, André; Locquet, Jean‐Pierre; Haesendonck, C. Van

doi:10.1021/nl2034656

Cited by 45 publications

(31 citation statements)

References 44 publications

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“…1D nanostructures doped with transition metal (such as Cr, Mn, Fe, Co, and Ni), which can find extensive application in spintronics and nanophotonics [3-5], show novel emission and interesting magnetic transport properties. For example, single crystalline Ga 0.95 Mn 0.05 As nanowires show temperature-dependent hopping conduction [6].…”

Section: Introductionmentioning

confidence: 99%

The effect of dopant and optical micro-cavity on the photoluminescence of Mn-doped ZnSe nanobelts

et al. 2013

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Pure and Mn-doped ZnSe nanobelts were synthesized by a convenient thermal evaporation method. Scanning electron microscopy, X-ray powder diffraction, energy dispersive X-ray spectroscopy and corresponding element mapping, and transmission electron microscope were used to examine the morphology, phase structure, crystallinity, composition, and growth direction of as-prepared nanobelts. Raman spectra were used to confirm the effective doping of Mn2+ into ZnSe nanobelts. Micro-photoluminescence (PL) spectra were used to investigate the emission property of as-prepared samples. A dominant trapped-state emission band is observed in single ZnSeMn nanobelt. However, we cannot observe the transition emission of Mn ion in this ZnSeMn nanobelt, which confirm that Mn powder act as poor dopant. There are weak near-bandgap emission and strong 4T1 → 6A1 transition emission of Mn2+ in single ZnSenormalMnCl2 and normalZnSeMn(CH3COO)2 nanobelt. More interesting, the 4T1 → 6A1 transition emission in normalZnSeMn(CH3COO)2 nanobelt split into multi-bands. PL mapping of individual splitted sub-bands were carried out to explore the origin of multi-bands. These doped nanobelts with novel multi-bands emission can find application in frequency convertor and wavelength-tunable light emission devices.

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Section: Introductionmentioning

confidence: 99%

The effect of dopant and optical micro-cavity on the photoluminescence of Mn-doped ZnSe nanobelts

et al. 2013

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“…The negative parabolic magnetoresistance characteristic is observed at low field. It is related to the weak localization and electron-electron interaction effects, which only occur in the coherent diffusive transport regime30. By rotating the magnetic field away from the perpendicular orientation, the minima in R xx are strongly suppressed.…”

Section: Resultsmentioning

confidence: 99%

Spin-polarized Wide Electron Slabs in Functionally Graded Polar Oxide Heterostructures

Lim

Bosman

et al. 2012

Sci Rep

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We report on the high mobility wide electron slabs with enhanced correlation effects by tailoring the polarization effects in a functionally graded ZnMgO/ZnO heterostructures. The characteristics of three-dimensional (3D) spreading electrons are evidenced by the capacitance-voltage profiling and the quantization of 3D Fermi surface in magneto-transport measurements. Despite the weak spin-orbit interaction, such electron slabs are spin-polarized with a large zero-field spin splitting energy, which is induced by the carrier-mediated ferromagnetism. Our results suggest that the vast majority of electrons are localized at the surface magnetic moment which does not allow spin manipulations, and only in the region visited by the itinerant carriers that the ferromagnetic exchange interactions via coupling to the surface local moments contribute to the spin transport. The host ferromagnetism is likely due to the formation of Zn cation vacancies on the surface regime induced by the stabilization mechanism and strain-relaxation in ZnMgO polar ionic surface.

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“…The mobility degradation arising from the Coulomb scattering and/or neutral crystalline defects deteriorated the value of the on‐state current; and the increased off‐state current mostly arises from the gate‐induced drain leakage . In addition, the channel even exhibited metallic‐like behavior when the implantation dose was high enough . Figure shows the SEM image and the transfer characteristics of ZnO NW FETs.…”

Section: Enhanced Electronic Device Performance By Ion Beammentioning

confidence: 99%

Section: Enhanced Electronic Device Performance By Ion Beammentioning

confidence: 99%

A Review of Recent Applications of Ion Beam Techniques on Nanomaterial Surface Modification: Design of Nanostructures and Energy Harvesting

Zhan

Song

et al. 2019

Small

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properties because of their special struc ture. When the materials reach a nano meter size, the electrical, optical, magnetic, and other properties of the materials will be altered greatly because of the small size effect, quantum size effect, sur face and boundary effects, and Coulomb blockade effect. [1] Currently, nanomaterials have been widely applied in many fields, including computers, catalysis, sensors, energy, and environmental protection. [2][3][4][5][6][7][8][9][10][11] As the demand increases, people aspire to fabricate nanomaterials with greater prop erties. Many methods have been used to improve the properties of nanomaterials, including doping, surface reconstruc tion, semiconductor composite, and metal nanoparticle embedding. [12][13][14][15][16][17][18][19][20] These days, ion beam techniques, including ion implantation, irradiation, and focused ion beam (FIB), have been extensively used to modulate the properties of nanomaterials. Moreover, ion beam techniques are regarded as a promising technique for doping and surface modification. Compared with doping during growth and diffusion, ion implantation is more controllable and reproducible. In addition, ion implantation is also an effective method for embedding nanoclusters in body materials. Moreover, ion irradiation is an effective method to modulate the morphology and surface structure of the mate rials. Therefore, via using this technique, various properties of nanomaterials can be tailored. FIB is typically used for the in situ study of ionirradiated materials. Figure 1 shows the applications of ion beam techniques for nanomaterial surface modification.Ion implantation, as an ion beam technique, has been extensively applied to the modulation of nanomaterial sur faces. Moreover, the technique has also been extensively used in the field of microelectronics. Ion implantation has replaced diffusion as a doping method to introduce dopants into the semiconductors. As an industrial technique, it exhibits high controllability and accuracy. In contrast to other doping strat egies, almost all elements can be introduced into the target materials by ion implantation and it does not introduce other impurity elements. In addition, ion implantation is not restricted by the solid solubility of elements in the mate rials. Ion implantation can be described as a collision process Nanomaterials have gained plenty of research interest because of their excellent performance, which is derived from their small size and special structure. In practical applications, to acquire nanomaterials with high performance, many methods have been used to modulate the structure and components of materials. To date, ion beam techniques have extensively been applied for modulating the performance of various nanomaterials. Energetic ion beams can modulate the surface morphology and chemical components of nanomaterials. In addition, ion beam techniques have also been used to fabricate nanomaterials, including 2D materials, nanoparticles, and nanowires. Compared with conventional metho...

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Tuning Quantum Corrections and Magnetoresistance in ZnO Nanowires by Ion Implantation

Cited by 45 publications

References 44 publications

The effect of dopant and optical micro-cavity on the photoluminescence of Mn-doped ZnSe nanobelts

The effect of dopant and optical micro-cavity on the photoluminescence of Mn-doped ZnSe nanobelts

Spin-polarized Wide Electron Slabs in Functionally Graded Polar Oxide Heterostructures

A Review of Recent Applications of Ion Beam Techniques on Nanomaterial Surface Modification: Design of Nanostructures and Energy Harvesting

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