Internal Field Shielding and the Quantum Confined Stark Effect in a Single In{sub x}Ga{sub 1-x}N Quantum Disk

Journal Article · Fri Dec 23 00:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3666495· OSTI ID:21612416

Holmes, Mark J; Xu, Wang; Jarjour, Anas F; Taylor, Robert A ^[1]; Park, Young S ^[2]; Warner, Jamie H; Jun, Luo ^[3]

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1. Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford, OX1 3PU (United Kingdom)
2. Quantum Functional Semiconductor Research Center and Department of Physics, Dongguk University, Seoul 100-715 (Korea, Republic of)
3. Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH (United Kingdom)

Time-integrated and time-resolved microphotoluminescence studies were carried out on In{sub x}Ga{sub 1-x}N quantum disks embedded in GaN nanocolumns grown by molecular beam epitaxy. Emission at {approx}3.33 eV from confined states was detected and observed to blueshift with excitation power; a result of charge screening and the quantum confined Stark effect. The lifetime of the emission was measured to decrease with increasing excitation power, attributed to reduced band bending and resulting increased overlap of the confined electron and hole wave functions.

• OSTI ID: 21612416
• Journal Information: AIP Conference Proceedings, Vol. 1399, Issue 1; Conference: 30. international conference on the physics of semiconductors, Seoul (Korea, Republic of), 25-30 Jul 2010; Other Information: DOI: 10.1063/1.3666495; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
77 NANOSCIENCE AND NANOTECHNOLOGY
BAND THEORY
BENDING
ELECTRONS
EV RANGE
EXCITATION
GALLIUM NITRIDES
HOLES
INDIUM NITRIDES
LIFETIME
MOLECULAR BEAM EPITAXY
PHOTOLUMINESCENCE
QUANTUM DOTS
SHIELDING
STARK EFFECT
TIME RESOLUTION
WAVE FUNCTIONS
CRYSTAL GROWTH METHODS
DEFORMATION
ELEMENTARY PARTICLES
EMISSION
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EPITAXY
FERMIONS
FUNCTIONS
GALLIUM COMPOUNDS
INDIUM COMPOUNDS
LEPTONS
LUMINESCENCE
NANOSTRUCTURES
NITRIDES
NITROGEN COMPOUNDS
PHOTON EMISSION
PNICTIDES
RESOLUTION
TIMING PROPERTIES