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Title

Size-controlled Ge nanostructures for enhanced Er3+ light emission

AuthorsMartín-Sánchez, Javier; Serna, Rosalía ; Toudert, Johann ; Alén, Benito ; Ballesteros Pérez, Carmen Inés
Issue Date6-Aug-2014
PublisherOptical Society of America
CitationOptics Letters 39(16): 4691-4694 (2014)
AbstractThe potential of Ge nanoparticles (NPs) embedded in Al2O 3 with tunable effective optical bandgap values in the range of 1.0-3.3 eV to induce enhanced Er3+ light emission is investigated. We demonstrate nonresonant indirect excitation of the Er3+ ions mediated by the Ge NPs at room temperature. Efficient Er3+ light emission enhancement is obtained for Ge NPs with large effective optical bandgaps in the range of 1.85 to 2.8 eV. The coupled Ge NP-Er emission shows a negligible thermal quenching from 10 K to room temperature that is related to Er3+ de-excitation through thermally activated defect states. © 2014 Optical Society of America.
Description4 pags.; 4 figs.; OCIS Codes (130.3130) Integrated optics : Integrated optics materials (140.3390) Lasers and laser optics : Laser materials processing; (160.5690) Materials : Rare-earth-doped materials; (250.5230) Optoelectronics : Photoluminescence (160.4236) Materials : Nanomaterials (250.5590) Optoelectronics : Quantum-well, -wire and -dot devices.
Publisher version (URL)http://dx.doi.org/10.1364/OL.39.004691
URIhttp://hdl.handle.net/10261/111652
DOI10.1364/OL.39.004691
Identifiersissn: 1539-4794
Appears in Collections:(CFMAC-IO) Artículos
(IMN-CNM) Artículos
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