Dr Mark Hughes M.A.Hughes@salford.ac.uk
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Silicon-Modified rare-earth transitions - a new route to Near- and Mid-IR Photonics
Hughes, MA; Lourenco, MA; Lai, KT; Sofi, IM; Ludurczak, W; Wong, L; Gwilliam, RM; Homewood, KP
Authors
MA Lourenco
KT Lai
IM Sofi
W Ludurczak
L Wong
RM Gwilliam
KP Homewood
Abstract
Silicon underpins microelectronics but lacks the photonic capability needed for next-generation systems and currently relies on a highly undesirable hybridization of separate discrete devices using direct band gap semiconductors. Rare-earth (RE) implantation is a promising approach to bestow photonic capability to silicon but is limited to internal RE transition wavelengths. Reported here is the first observation of direct optical transitions from the silicon band edge to internal f-levels of implanted REs (Ce, Eu, and Yb); this overturns previously held assumptions about the alignment of RE levels to the silicon band gap. The photoluminescence lines are massively redshifted to several technologically useful wavelengths and modeling of their splitting indicates that they must originate from the REs. Eu-implanted silicon devices display a greatly enhanced electroluminescence efficiency of 8%. Also observed is the first crystal field splitting in Ce luminescence. Mid-IR silicon photodetectors with specific detectivities comparable to existing state-of-the-art mid-IR detectors are demonstrated.
Citation
Hughes, M., Lourenco, M., Lai, K., Sofi, I., Ludurczak, W., Wong, L., …Homewood, K. (2016). Silicon-Modified rare-earth transitions - a new route to Near- and Mid-IR Photonics. Advanced functional materials, 26(12), 1986-1994. https://doi.org/10.1002/adfm.201504662
Journal Article Type | Article |
---|---|
Acceptance Date | Dec 11, 2015 |
Online Publication Date | Feb 9, 2016 |
Publication Date | Mar 21, 2016 |
Deposit Date | May 3, 2016 |
Publicly Available Date | Feb 9, 2017 |
Journal | Advanced Functional Materials |
Print ISSN | 1616-301X |
Electronic ISSN | 1616-3028 |
Publisher | Wiley |
Volume | 26 |
Issue | 12 |
Pages | 1986-1994 |
DOI | https://doi.org/10.1002/adfm.201504662 |
Publisher URL | http://dx.doi.org/10.1002/adfm.201504662 |
Related Public URLs | http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1616-3028/ |
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adfm201504662.pdf
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Louren-o_et_al-2016-Advanced_Functional_Materials.pdf
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Licence
http://creativecommons.org/licenses/by-nc/4.0/
Publisher Licence URL
http://creativecommons.org/licenses/by-nc/4.0/
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