Si nanoparticle- Er3+ coupling through contact in as-deposited nanostructured films

S. Núez-Sánchez, P. M. Roque, R. Serna*, A. K. Petford-Long

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

The efficient excitation of Er3+ ions through contact with Si nanoparticles (NPs) is demonstrated. A nanostructured doping process has been developed that leads to contact between Si NPs formed in situ and optically-active Er3+ ions embedded in Al2 O3. This is achieved by independent and consecutive deposition of the dopants and matrix. The Si NP- Er3+ contact regime enhances the probability of efficient interaction due to the local spatial overlap of the electronic states of the Er3+ and of the Si NP exciton, enabling energy transfer by interband exciton recombination. This leads to up to 53% of the Er3+ ions being excited in as-deposited films.

Original languageEnglish (US)
Article number151109
JournalApplied Physics Letters
Volume98
Issue number15
DOIs
StatePublished - Apr 11 2011

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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