Change search
ReferencesLink to record
Permanent link

Direct link
Photoluminescence study of as-grown self-catalyzed GaAs/AlGaAs core-shell nanowires
Norwegian University of Science and Technology, Faculty of Information Technology, Mathematics and Electrical Engineering, Department of Electronics and Telecommunications.
2012 (English)MasteroppgaveStudent thesis
Abstract [en]

A macro-photoluminescence study of self-catalyzed nanowires, using a specialized setup for this purpose, has been performed. Several samples were even compared to single nanowire micro-photoluminescence measurements, on the same samples, done by other students in the nanowire group at NTNU. The macrophotoluminescence measurements were done by changing parameters such as temperature and excitation power. A 532 nm laser was used to excite the wires and the photoluminescence was measured by a CCD detector attached to a spectroscope. Using macro-photoluminescence measurements in a qualitative comparison with measurements done on single nanowires by micro-photoluminescence spectroscopy can give the researcher a decent understanding of the quality of the sample and its contributions to photoluminescence. Measurements done in this thesis show probable contributions from most types of transitions expected in zinc-blende nanowires, consisting of such defects as dense zinc-blende/wurtzite heterostructures, highly twinned regions, but also from nanowires of higher purity. As nanowires move closer to the realization of e.g. nanowire based solar cells, such macro-photoluminescence measurements will become increasingly important in deciding the overall quality of the grown structures.

Place, publisher, year, edition, pages
Institutt for elektronikk og telekommunikasjon , 2012. , 81 p.
Keyword [no]
ntnudaim:8008, MTEL elektronikk, Nanoelektronikk og mikrosystemer
URN: urn:nbn:no:ntnu:diva-18921Local ID: ntnudaim:8008OAI: diva2:566373
Available from: 2012-11-08 Created: 2012-11-08

Open Access in DiVA

fulltext(5399 kB)705 downloads
File information
File name FULLTEXT01.pdfFile size 5399 kBChecksum SHA-512
Type fulltextMimetype application/pdf
cover(184 kB)17 downloads
File information
File name COVER01.pdfFile size 184 kBChecksum SHA-512
Type coverMimetype application/pdf

By organisation
Department of Electronics and Telecommunications

Search outside of DiVA

GoogleGoogle Scholar
Total: 705 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 62 hits
ReferencesLink to record
Permanent link

Direct link