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Nanoporous silicon tubes: the role of geometry in nanostructure formation and application to light emitting diodes
Ecole Polytech Federal Lausanne, Switzerland.
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering. Rudjer Boskovic Institute, Croatia.
Ecole Polytech Federal Lausanne, Switzerland.
Ecole Polytech Federal Lausanne, Switzerland.
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2017 (English)In: Journal of Physics D: Applied Physics, ISSN 0022-3727, E-ISSN 1361-6463, Vol. 50, no 26, 265101Article in journal (Refereed) Published
Abstract [en]

Obtaining light emission from silicon has been the holy grail of optoelectronics over the last few decades. One of the most common methods for obtaining light emission from silicon is to reduce it to a nanoscale structure, for example by producing porous silicon. Here, we present a method for the large-area fabrication of porous silicon microtubes by the stain etching of silicon micropillar arrays. We explain and model how the formation of the microtubes is influenced by the morphology of the substrate, especially the concave or convex character of the 3D features. Light emission is demonstrated at the micro- and nanoscale respectively by photo- and cathodoluminescence. Finally, we demonstrate a 0.55 cm(2) device that can work as a photodetector with 2.3% conversion efficiency under one sun illumination, and also as a broadband light emitting diode, illustrating the applicability of our results for optoelectronic applications.

Place, publisher, year, edition, pages
IOP PUBLISHING LTD , 2017. Vol. 50, no 26, 265101
Keyword [en]
porous silicon; silicon photonics; light emitting diode; stain etching; micro nano fabrication; cathodoluminescence; luminescence
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Identifiers
URN: urn:nbn:se:liu:diva-139178DOI: 10.1088/1361-6463/aa7196ISI: 000403338800001OAI: oai:DiVA.org:liu-139178DiVA: diva2:1120202
Note

Funding Agencies|Croatian Science Foundation [IP-2014-09-7046]; SNF through NCCR-QSIT; Nanotera Synergy, ITN project from Nanoembrace

Available from: 2017-07-05 Created: 2017-07-05 Last updated: 2017-07-05

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Derek, Vedran
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CiteExportLink to record
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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
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  • Other locale
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Output format
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