Surface plasmon enhanced light emission from semiconductor materials

Koichi Okamoto, Axel Scherer, Yoichi Kawakami

Research output: Contribution to journalConference articlepeer-review

31 Citations (Scopus)

Abstract

Surface plasmon (SP) coupling technique was used to enhance light emissions from semiconductor nanocrystals with evaporated metal layers. We found that the SP coupling can increase the internal quantum efficiencies (IQE) of emission from CdSe-based nanocrystals regardless of the initial efficiencies. This suggests that this technique should be much effective for various materials that suffer from low quantum efficiencies. We also obtained 70-fold enhancement of emission from silicon nanocrystals in silicon dioxide. Obtained IQE value is 38%, which is as large as that of a compound semiconductor with direct transition. The SP coupling technique would bring a great improvement to silicon photonics.

Original languageEnglish
Pages (from-to)2822-2824
Number of pages3
JournalPhysica Status Solidi (C) Current Topics in Solid State Physics
Volume5
Issue number9
DOIs
Publication statusPublished - Dec 1 2008
Event34th International Symposium on Compound Semiconductors, ISCS-2007 - Kyoto, Japan
Duration: Oct 15 2007Oct 18 2007

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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