Enhancement of photoluminescence signal from ultrathin layers with silicon nanocrystals
2012 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 100, no 6, 061908-1-061908-4 p.Article in journal (Refereed) Published
Using the model of oscillating dipoles, we simulated the photoluminescence intensity of a triple-layered structure where the silicon nanocrystals layer was enclosed by buffer and capping silicon dioxide layers. It was found that a structure with an optimized buffer layer thickness exhibited photoluminescence which was approximately 20 times more intense than that from the structure without a buffer layer. Theoretical simulations were verified by photoluminescence measurements for the corresponding structures with silicon nanocrystals fabricated by plasma enhanced chemical vapour deposition.
Place, publisher, year, edition, pages
2012. Vol. 100, no 6, 061908-1-061908-4 p.
buffer layers, elemental semiconductors, nanofabrication, nanostructured materials, photoluminescence, plasma CVD, silicon
Composite Science and Engineering Condensed Matter Physics
IdentifiersURN: urn:nbn:se:kth:diva-125055DOI: 10.1063/1.3682537ISI: 000300214000037OAI: oai:DiVA.org:kth-125055DiVA: diva2:639141
QC 201308122013-08-062013-08-062013-08-12Bibliographically approved