Raman Spectroscopy of InAs Based Nanowires & Electronic Characterization of Heterostructure InAs/GaInAs Nanowires
Publikation: Bog/antologi/afhandling/rapport › Ph.d.-afhandling › Forskning
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Raman Spectroscopy of InAs Based Nanowires & Electronic Characterization of Heterostructure InAs/GaInAs Nanowires. / Tanta, Rawa.
The Niels Bohr Institute, Faculty of Science, University of Copenhagen, 2015.Publikation: Bog/antologi/afhandling/rapport › Ph.d.-afhandling › Forskning
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TY - BOOK
T1 - Raman Spectroscopy of InAs Based Nanowires & Electronic Characterization of Heterostructure InAs/GaInAs Nanowires
AU - Tanta, Rawa
PY - 2015
Y1 - 2015
N2 - The work presented in this thesis represents two main topics. The first one, which covers a bigger volume of the thesis, is mainly about Raman spectroscopy on individual InAs based nanowires. The second part presents electronic characterization of heterostructure InAs/GaInAs nanowires.Raman spectroscopy measurements on InAs based nanowires include several topics. Firstly, we use polarized Raman spectroscopy for determining the crystal orientation of the nanowires based on conventional Raman selection rules. We studied the effect of the high power laser irradiation on the nanowire, and its relation to the nanowire surface facets. We present controlled oxidation experiments on InAs nanowires enabled by fabrication of micro-trenches in the substrate and the electronic properties of the oxidized nanowire were also studied. Finally, we present an attempt to detect the LO phonon-plasmon coupled modes.In the last chapter of this thesis we present a study on electrical characterization of InAs/GaInAs heterostructure nanowires. First, we performed selective etching experiments in order to locate the barriers. Second, the barriers were probed electrically by performing thermally activated transport measurements.
AB - The work presented in this thesis represents two main topics. The first one, which covers a bigger volume of the thesis, is mainly about Raman spectroscopy on individual InAs based nanowires. The second part presents electronic characterization of heterostructure InAs/GaInAs nanowires.Raman spectroscopy measurements on InAs based nanowires include several topics. Firstly, we use polarized Raman spectroscopy for determining the crystal orientation of the nanowires based on conventional Raman selection rules. We studied the effect of the high power laser irradiation on the nanowire, and its relation to the nanowire surface facets. We present controlled oxidation experiments on InAs nanowires enabled by fabrication of micro-trenches in the substrate and the electronic properties of the oxidized nanowire were also studied. Finally, we present an attempt to detect the LO phonon-plasmon coupled modes.In the last chapter of this thesis we present a study on electrical characterization of InAs/GaInAs heterostructure nanowires. First, we performed selective etching experiments in order to locate the barriers. Second, the barriers were probed electrically by performing thermally activated transport measurements.
UR - https://soeg.kb.dk/permalink/45KBDK_KGL/fbp0ps/alma99122228199205763
M3 - Ph.D. thesis
BT - Raman Spectroscopy of InAs Based Nanowires & Electronic Characterization of Heterostructure InAs/GaInAs Nanowires
PB - The Niels Bohr Institute, Faculty of Science, University of Copenhagen
ER -
ID: 156776519