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Mid-infrared GaSb-based resonant tunneling diode photodetectors for gas sensing applications
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dc.contributor.author | Rothmayr, F | |
dc.contributor.author | Pfenning, A | |
dc.contributor.author | Kistner, C | |
dc.contributor.author | Koeth, J | |
dc.contributor.author | Knebl, G | |
dc.contributor.author | Schade, A | |
dc.contributor.author | Krueger, S | |
dc.contributor.author | Worschech, l | |
dc.contributor.author | Hartmann, F | |
dc.contributor.author | Höfling, Sven | |
dc.date.accessioned | 2018-05-02T10:30:13Z | |
dc.date.available | 2018-05-02T10:30:13Z | |
dc.date.issued | 2018-04 | |
dc.identifier | 252809059 | |
dc.identifier | f695ade5-283a-46bd-baf0-ad2b380d123a | |
dc.identifier | 85045837249 | |
dc.identifier | 000430569400007 | |
dc.identifier.citation | Rothmayr , F , Pfenning , A , Kistner , C , Koeth , J , Knebl , G , Schade , A , Krueger , S , Worschech , L , Hartmann , F & Höfling , S 2018 , ' Mid-infrared GaSb-based resonant tunneling diode photodetectors for gas sensing applications ' , Applied Physics Letters , vol. 112 , no. 16 , 161107 . https://doi.org/10.1063/1.5025531 | en |
dc.identifier.issn | 0003-6951 | |
dc.identifier.uri | https://hdl.handle.net/10023/13279 | |
dc.description | The authors are grateful for financial support by the BMBF via the national project HIRT (FKZ:13XP5003A). | en |
dc.description.abstract | We present resonant tunneling diode-photodetectors (RTD-PDs) with GaAs0.15Sb0.85/AlAs0.1Sb0.9 double barrier structures combined with an additional quaternary Ga0.64In0.36As0.33Sb0.67 absorption layer covering the fingerprint absorption lines of various gases in the mid-infrared wavelength spectral region. The absorption layer cut-off wavelength is determined to be 3.5 µm and the RTD-PDs show peak-to-valley current ratios up to 4.3 with peak current densities of 12 A/cm-2.The incorporation of the quaternary absorption layer enables the RTD-PD to be sensitive to illumination with light up to the absorption lines of HCl at 3395 nm. At this wavelength, the detector shows a responsivity of 6.3 mA/W. At the absorption lines of CO2 and CO at 2004 nm and 2330 nm respectively, the RTD-PD reaches responsivities up to 0.97 A/W. Thus RTD-PDs pave the way towards high sensitive mid-infrared detectors that can be utilized in tunable laser absorption spectroscopy. | |
dc.format.extent | 5 | |
dc.format.extent | 954708 | |
dc.language.iso | eng | |
dc.relation.ispartof | Applied Physics Letters | en |
dc.subject | QC Physics | en |
dc.subject | TK Electrical engineering. Electronics Nuclear engineering | en |
dc.subject | NDAS | en |
dc.subject.lcc | QC | en |
dc.subject.lcc | TK | en |
dc.title | Mid-infrared GaSb-based resonant tunneling diode photodetectors for gas sensing applications | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.contributor.institution | University of St Andrews. Condensed Matter Physics | en |
dc.identifier.doi | 10.1063/1.5025531 | |
dc.description.status | Peer reviewed | en |
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