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Computerized data analysis of numerous spectra fromindividual quantum dots: Identifying Quantum-dot signals by Image-processing
KTH, School of Information and Communication Technology (ICT), Material Physics, Material Physics, MF. (Nanostructured Silicon)
2012 (English)Independent thesis Advanced level (degree of Master (Two Years)), 80 credits / 120 HE creditsStudent thesis
Abstract [en]

In this work an image processing software was developed to extract single nanocrystals luminescence spectra from spectral images containing various noises and parasitic signals. This software helps users to process and analyze experimental data in a simplified and intuitive way and allows quick analysis of large volumes of data. The output results are the distributions of peak emission energy and inter-peak spacing. The software also generates text-files containing the extracted information for further analysis. Also experimental photoluminescence measurements have been performed at liquid nitrogen temperature of 77K, on phosphorous doped silicon nanocrystals. The data were analyzed with the developed software and with other data confirm previous results indicating the accuracy of the methodology used in the code. The implementation of this software for data analysis can process information without human bias and hopefully find hidden patterns that previously been lost when analyzing data manually.

Place, publisher, year, edition, pages
2012. , 50 p.
Trita-ICT-EX, 48
Keyword [en]
quantum dot, image processing
National Category
Condensed Matter Physics
URN: urn:nbn:se:kth:diva-119289OAI: diva2:610609
Educational program
Master of Science in Engineering - Microelectronics
2012-12-14, B4 Electrum, Isafjordsgatan 22, Kista, 10:00 (English)
Physics, Chemistry, Mathematics
Available from: 2013-03-21 Created: 2013-03-12 Last updated: 2013-03-21Bibliographically approved

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Material Physics, MF
Condensed Matter Physics

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