This title appears in the Scientific Report :
2020
Please use the identifier:
http://dx.doi.org/10.1088/1361-6528/ab91ef in citations.
Please use the identifier: http://hdl.handle.net/2128/27315 in citations.
Ge(Sn) nano-island/Si heterostructure photodetectors with plasmonic antennas
Ge(Sn) nano-island/Si heterostructure photodetectors with plasmonic antennas
We report on photodetection in deep subwavelength Ge(Sn) nano-islands on Si nano-pillar substrates, in which self-aligned nano-antennas in the Al contact metal are used to enhance light absorption by means of local surface plasmon resonances. The impact of parameters such as substrate doping and dev...
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Personal Name(s): | Schlykow, Viktoria (Corresponding author) |
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Manganelli, Costanza Lucia / Römer, Friedhard / Clausen, Catherina Johanna / Augel, Lion / Schulze, Joerg / Katzer, Jens / Schubert, Michael Andreas / Witzigmann, Bernd / Schroeder, Thomas / Capellini, Giovanni / Fischer, Inga Anita | |
Contributing Institute: |
JARA Institut Green IT; PGI-10 |
Published in: | Nanotechnology, 31 (2020) 34, S. 345203 - |
Imprint: |
Bristol
IOP Publ.
2020
|
DOI: |
10.1088/1361-6528/ab91ef |
Document Type: |
Journal Article |
Research Program: |
ohne Topic |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/27315 in citations.
We report on photodetection in deep subwavelength Ge(Sn) nano-islands on Si nano-pillar substrates, in which self-aligned nano-antennas in the Al contact metal are used to enhance light absorption by means of local surface plasmon resonances. The impact of parameters such as substrate doping and device geometry on the measured responsivities are investigated and our experimental results are supported by simulations of the three-dimensional distribution of the electromagnetic fields. Comparatively high optical responsivities of about 0.1 A W−1 are observed as a consequence of the excitation of localized surface plasmons, making our nano-island photodetectors interesting for applications in which size reduction is essential. |