Vertically aligned wurtzite CdTe nanowires derived from a catalytically driven growth mode

Neretina, Svetlana; Hughes, Robert A.; Britten, J. F.; Sochinskii, N.V.; Preston, J. S.; Mascher, P.

doi:10.1088/0957-4484/18/27/275301

Cited by 68 publications

(58 citation statements)

References 30 publications

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“…The length of the rods is controlled by varying the amount of the gold deposited and thus the aspect ratio of the nanorods can be tuned accordingly. In a similar vein, CdTe nanorods [8,221,222] were used as a template upon which a thin gold nanoshell layer was deposited (Fig. 13).…”

Section: Template Methodsmentioning

confidence: 99%

Gold Nanorods: From Synthesis and Properties to Biological and Biomedical Applications

2009

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Noble metal nanoparticles are capable of confining resonant photons in such a manner as to induce coherent surface plasmon oscillation of their conduction band electrons, a phenomenon leading to two important properties. Firstly, the confinement of the photon to the nanoparticle's dimensions leads to a large increase in its electromagnetic field and consequently great enhancement of all the nanoparticle's radiative properties, such as absorption and scattering. Moreover, by confining the photon's wavelength to the nanoparticle's small dimensions, there exists enhanced imaging resolving powers, which extend well below the diffraction limit, a property of considerable importance in potential device applications. Secondly, the strongly absorbed light by the nanoparticles is followed by a rapid dephasing of the coherent electron motion in tandem with an equally rapid energy transfer to the lattice, a process integral to the technologically relevant photothermal properties of plasmonic nanoparticles. Of all the possible nanoparticle shapes, gold nanorods are especially intriguing as they offer strong plasmonic fields while exhibiting excellent tunability and biocompatibility. We begin this review of gold nanorods by summarizing their radiative and nonradiative properties. Their various synthetic methods are then outlined with an emphasis on the seed-mediated chemical growth. In particular, we describe nanorod spontaneous self-assembly, chemically driven assembly, and polymer-based alignment. The final section details current studies aimed at applications in the biological and biomedical fields.

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Section: Template Methodsmentioning

confidence: 99%

Gold Nanorods: From Synthesis and Properties to Biological and Biomedical Applications

2009

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“…This is a clear manifestation of HH-LH mixing, which enters through the squared amplitudes of the HH and LH components in Eq. (25). Thus, even though the Hamiltonian giving rise to the splitting characterized by g α orb,diag is diagonal in spin-space, its contribution to the spin splitting is affected by the quantum-confinement-induced HH-LH mixing in the unperturbed states.…”

Section: Orbital Effectsmentioning

confidence: 99%

“…Rapid developments in material science and technology have enabled the realization of nanowires from many materials and materials combinations, such as III-V semiconductors (e.g., GaAs, 1,22,27 InP, 2,3,10,12 InAs 1,7,8,29 ), II-VI semiconductors (e.g., CdSe, 5,12 CdS, 12 CdTe, 4,25 ZnTe 20,32 ), as well as Si 14,24,28 and Ge. 23,30,31 By now it is possible to dope nanowires 22,26,29 and perform heterostructure engineering with atomic precision.…”

Section: Introductionmentioning

confidence: 99%

Spin-32physics of semiconductor hole nanowires: Valence-band mixing and tunable interplay between bulk-material and orbital bound-state spin splittings

et al. 2009

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We present a detailed theoretical study of the electronic spectrum and Zeeman splitting in hole quantum wires. The spin-3/2 character of the topmost bulk-valence-band states results in a strong variation of subband-edge g factors between different subbands. We elucidate the interplay between quantum confinement and heavy-holelight-hole mixing and identify a certain robustness displayed by low-lying hole-wire subband edges with respect to changes in the shape or strength of the wire potential. The ability to address individual subband edges in, e.g., transport or optical experiments enables the study of holes states with nonstandard spin polarization, which do not exist in spin-1/2 systems. Changing the aspect ratio of hole wires with rectangular cross-section turns out to strongly affect the g factor of subband edges, providing an opportunity for versatile in-situ tuning of hole-spin properties with possible application in spintronics. The relative importance of cubic crystal symmetry is discussed, as well as the spin splitting away from zone-center subband edges.

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“…It is known that PLD method is one of the best methods to grow 1D nanostructures with high quality. Neretina et al used the PLD method to grow CdTe nanowires [48]. They used Bi as metal catalyst and sapphire as substrate for growth of the CdTe nanowires.…”

Section: Pulsed Laser Deposition (Pld) Methods To Grow Cd-chalcogenidementioning

confidence: 99%

Metal Chalcogenide Hierarchical Nanostructures for Energy Conversion Devices

Yousefi

Jamali‐Sheini

Zak

2014

Metal Chalcogenide Nanostructures for Renewable Energy Applications

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Metal chalcogenide hierarchical nanostructures as energy conversion devices were studied in this chapter. Cd-chalcogenide nanostructures were chosen as sample study due to their unique properties as energy converter. In the first step, different methods were introduced to grow this type of nanostructures. It was discussed three low cost-effective methods to grow the Cd-chalcogenide nanostructures such as thermal evaporation (chemical and physical vapor depositions), chemical bath deposition, and electrochemical methods. However, it was observed that samples were grown by a pulsed laser deposition method as a complex method. In addition, effects of growth conditions on morphology and optical properties of the nanostructures were investigated. In the second step, the fundamentals of solar energy conversion were described. Furthermore, quantum physics of semiconductor solar cells was studied. Finally, the Cd-chalcogenide nanostructures were introduced as solar energy conversion and important factors that can affect the efficiency of this type of solar cells were introduced.

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Vertically aligned wurtzite CdTe nanowires derived from a catalytically driven growth mode

Cited by 68 publications

References 30 publications

Gold Nanorods: From Synthesis and Properties to Biological and Biomedical Applications

Gold Nanorods: From Synthesis and Properties to Biological and Biomedical Applications

Spin-32physics of semiconductor hole nanowires: Valence-band mixing and tunable interplay between bulk-material and orbital bound-state spin splittings

Metal Chalcogenide Hierarchical Nanostructures for Energy Conversion Devices

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