Quantum Optoelectronics

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Abnormal photoluminescence properties of GaN nanorods grown on Si(111) by molecular-beam epitaxy

NANOTECHNOLOGY 19:47 (2008) ARTN 475402

Authors:

Young S Park, Tae W Kang, RA Taylor
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Electrically driven single InGaN/GaN quantum dot emission

APPLIED PHYSICS LETTERS 93:23 (2008) ARTN 233103

Authors:

Anas F Jarjour, Robert A Taylor, Rachel A Oliver, Menno J Kappers, Colin J Humphreys, Abbes Tahraoui
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Fabrication of Ultrathin Single-Crystal Diamond Membranes

ADVANCED MATERIALS 20:24 (2008) 4793-+

Authors:

Barbara A Fairchild, Paolo Olivero, Sergey Rubanov, Andrew D Greentree, Felix WaIdermann, Robert A Taylor, Ian Walmsley, Jason M Smith, Shane Huntington, Brant C Gibson, David N Jamieson, Steven Prawer
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Band structure changes in carbon nanotubes caused by MnTe2 crystal encapsulation

Aip Conference Proceedings 893 (2007) 1047-1048

Authors:

LJ Li, TW Lin, J Doig, IB Mortimer, JG Wiltshire, RA Taylor, J Sloan, MLH Green, RJ Nicholas

Abstract:

Modification of the band structure of single-walled carbon nanotubes (SWNTs) through encapsulation of the inorganic material manganese ditelluride (MnTe2) is reported. We show that this leads to a global reduction of their 1st (E11S) and 2nd (E22S) band gap energies by a similar percentage (up to 3.8%) and interpret this as due to a lowering of the carbon-carbon transfer integrals. © 2007 American Institute of Physics.
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Characterization of tunneling and free-carrier screening in coupled asymmetric GaN/AlGaN quantum discs

Aip Conference Proceedings 893 (2007) 1003-1004

Authors:

KH Lee, JH Na, S Birner, SN Yi, RA Taylor, YS Park, CM Park, TW Kang

Abstract:

We present a systematic investigation of free-carrier screening in coupled asymmetric GaN quantum discs with embedded AlGaN barriers using time-integrated and time-resolved micro-photoluminescence measurements, supported by three-dimensional multi-band k.p computational modeling. Free-carrier screening effects decreased with the barrier thickness, which indicates that the source of the free-carriers were carriers tunneling through the barrier. © 2007 American Institute of Physics.
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