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Photonic band-gap effects on photoluminescence of silicon nanocrystals embedded in artificial opals
KTH, Superseded Departments, Microelectronics and Information Technology, IMIT.ORCID iD: 0000-0002-5260-5322
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2003 (English)In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 93, no 8, 4471-4474 p.Article in journal (Refereed) Published
Abstract [en]

Si nanocrystals were formed in synthetic opals by Si-ion implantation and their optical properties studied using microphotoluminescence and reflection techniques. The properties of areas with high crystalline quality are compared with those of disordered regions of samples. The photoluminescence spectrum from Si nanocrystals embedded in silica spheres is narrowed by the inhibition of emission at wavelengths corresponding to the opal photonic pseudoband gap (similar to690 nm). Measurements of photoluminescence spectra from individual implanted silica spheres is also demonstrated and the number of emitting Si nanocrystals in single brightly emitting spheres is estimated to be of the order of one thousand.

Place, publisher, year, edition, pages
2003. Vol. 93, no 8, 4471-4474 p.
Keyword [en]
optical-properties, quantum dots, spectroscopy, particles, crystals, array
Identifiers
URN: urn:nbn:se:kth:diva-22367DOI: 10.1063/1.1560565ISI: 000181863100014OAI: oai:DiVA.org:kth-22367DiVA: diva2:341065
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Linnros, Jan

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