TITLE

Temperature-dependent carrier trapping processes in short period quantum wire superlattices grown by flow rate modulation epitaxy

AUTHOR(S)
Liu, X. Q.; Liu, X.Q.; Sasaki, A.; Ohno, N.; Wang, Xue-Lun; Xue-Lun Wang; Ogura, Mutsuo
PUB. DATE
September 2000
SOURCE
Applied Physics Letters;9/4/2000, Vol. 77 Issue 10
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report the first systematic investigation of the temperature-dependent carrier transferring processes of very short period V-grooved GaAs/AlGaAs quantum wire superlattice structures grown by flow rate-modulated metal-organic vapor phase epitaxy. The one monolayer (1 ML) fluctuation causes carrier confinement in sidewall (111) facet superlattice structures, and is shown to play an important role in the carrier transferring process. At low temperatures, the carrier transfer is blocked by the barriers of 1 ML fluctuation, while at high temperatures the carrier transfer from (111) superlattice to the wire region is shown to be very efficient after thermally overcoming the barriers. The temperature-dependent decay times of the different parts give direct evidence of the carrier transferring process, which demonstrates that the carriers can trap into the wire region within 50 ps at temperatures higher than 100 K. © 2000 American Institute of Physics.
ACCESSION #
4413142

 

Related Articles

  • Spontaneous growth of an InAs nanowire lattice in an InAs/GaSb superlattice. Nosho, B. Z.; Bennett, B. R.; Whitman, L. J.; Goldenberg, M. // Applied Physics Letters;12/2/2002, Vol. 81 Issue 23, p4452 

    We describe a lattice of InAs nanowires that spontaneously organizes in three dimensions within an InAs/GaSb superlattice grown under high As[sub 4] flux. As characterized by x-ray diffraction and cross-sectional scanning tunneling microscopy, the periodic nanowires are ∼10 nm high, 120 nm...

  • Investigation of titled superlattices for quantum-wire laser applications. Jong Chang Yi; Dagli, Nadir; Coldren, Larry A. // Applied Physics Letters;12/2/1991, Vol. 59 Issue 23, p3015 

    Analyzes a quantum-wire array, known as tilted superlattice (TSL) formed by direct molecular beam epitaxial growth on vicinal surfaces. Observation of anisotropy between x and y polarizations; Effects of the imperfections on the miniband characteristics of TSL; variation of the upper and lower...

  • Structure of serpentine superlattice quantum-wire arrays determined by transmission electron.... Krishnamurthy, Mohan; Miller, M.S. // Applied Physics Letters;12/21/1992, Vol. 61 Issue 25, p2990 

    Analyzes the structure of serpentine superlattice (SSL) quantum-wire arrays. Use of transmission electron diffraction and microscopy; Incorporation of digital alloy barriers; Synthesis of diffraction pattern from SSL; Condition of step-flow during SSL growth; Factors causing contrast between...

  • Atomic layer deposition of ZnSe/CdSe superlattice nanowires. Solanki, R.; Huo, J.; Freeouf, J. L.; Miner, B. // Applied Physics Letters;11/11/2002, Vol. 81 Issue 20, p3864 

    Atomic layer deposition has been employed to grow nanowires composed of ZnSe/CdSe superlattices. Growth of the nanowires was initiated using gold nanoparticles and the vapor-liquid-solid mechanism. High-resolution transmission electron microscopy shows that these structures are single crystals...

  • Electron and hole spectra in a superlattice of cylindrical quantum wires. Golovach, V. M.; Zegrya, G. G.; Makhanets, A. M.; Pronishin, I. V.; Tkach, N. V. // Semiconductors;May99, Vol. 33 Issue 5, p564 

    The electron and hole spectra in a superlattice of cylindrical quantum wires are calculated by the augmented-plane-wave method. The energy component due to the motion of quasiparticles in a direction perpendicular to the long axis of a wire consists of an alternation of bands with positive and...

  • Excitonic optical properties in fractional-layer-superlattice wire structures. Ando, Hiroaki; Saito, Hisao; Chavez-Pirson, Arturo; Gotoh, Hideki; Kobayashi, Naoki // Applied Physics Letters;9/9/1996, Vol. 69 Issue 11, p1512 

    We report on the evolution of the excitonic optical features from two dimensions (2D) to one dimension (1D) in GaAs/AlAs fractional-layer-superlattice (FLS) wire structures. We demonstrate for the first time how the excitonic optical properties continuously evolve from 2D to 1D by introducing...

  • Growth of nanowire superlattice structures for nanoscale photonics and electronics. Gudiksen, Mark S.; Lauhon, Lincoln J.; Jianfang Wang; Smith, David C.; Lieber, Charles M. // Nature;2/7/2002, Vol. 415 Issue 6872, p617 

    Describes the growth of nanowire superlattice structures by repeated modulation of vapor-phase semiconductor reactants during growth of the wires. Unique photonic and electronic properties of the nanowire superlattices shown through photoluminescence, electrical transport and...

  • Optical gain anisotropy in serpentine superlattice nanowire-array lasers. Hu, S.Y.; Miller, M.S. // Applied Physics Letters;10/11/1993, Vol. 63 Issue 15, p2015 

    Examines the optical gain anisotropic measurement in serpentine superlattice (SSL) nanowire-array laser. Comparison between the TM and TE mode gain when placing the optical cavity along the nanowire direction; Growth method profile of the SSL laser; Fabrication of the ridge-waveguide lasers...

  • Controlled Li doping of Si nanowires by electrochemical insertion method. Zhou, G.W.; Li, H. // Applied Physics Letters;10/18/1999, Vol. 75 Issue 16, p2447 

    Examines the controlled lithium doping of silicon nanowires (SiNW) by electrochemical insertion method at room temperature. Microstructures of Si NW with different doses of lithium ions; Gradual destruction of the crystalline structure of the Si NW with the increasing lithium ion dose; Linking...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics