Optically-Thin Broadband Graphene-Membrane Photodetector
A broadband graphene-on-Si3N4-membrane photodetector for the visible-IR spectral range is realised by simple lithography and deposition techniques. Photo-current is produced upon illumination due to presence of the build-in potential between dissimilar metal electrodes on graphene as a result of cha...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-02-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/10/3/407 |
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| author | Tania Moein Darius Gailevičius Tomas Katkus Soon Hock Ng Stefan Lundgaard David J. Moss Hamza Kurt Vygantas Mizeikis Kȩstutis Staliūnas Mangirdas Malinauskas Saulius Juodkazis |
| author_facet | Tania Moein Darius Gailevičius Tomas Katkus Soon Hock Ng Stefan Lundgaard David J. Moss Hamza Kurt Vygantas Mizeikis Kȩstutis Staliūnas Mangirdas Malinauskas Saulius Juodkazis |
| author_sort | Tania Moein |
| collection | DOAJ |
| description | A broadband graphene-on-Si3N4-membrane photodetector for the visible-IR spectral range is realised by simple lithography and deposition techniques. Photo-current is produced upon illumination due to presence of the build-in potential between dissimilar metal electrodes on graphene as a result of charge transfer. The sensitivity of the photo-detector is <inline-formula> <math display="inline"> <semantics> <mrow> <mo>∼</mo> <mn>1</mn> <mo>.</mo> <mn>1</mn> </mrow> </semantics> </math> </inline-formula><inline-formula> <math display="inline"> <semantics> <mi mathvariant="sans-serif">μ</mi> </semantics> </math> </inline-formula>A/W when irradiated with 515 and 1030 nm wavelengths; a smaller separation between the metal contacts favors gradient formation of the built-in electric field and increases the efficiency of charge separation. This optically-thin graphene-on-membrane photodetector and its interdigitated counterpart has the potential to be used within 3D optical elements, such as photonic crystals, sensors, and wearable electronics applications where there is a need to minimise optical losses introduced by the detector. |
| first_indexed | 2024-12-11T22:24:13Z |
| format | Article |
| id | doaj.art-6370ccf9b980465fb6d287b74255b264 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-12-11T22:24:13Z |
| publishDate | 2020-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-6370ccf9b980465fb6d287b74255b2642022-12-22T00:48:21ZengMDPI AGNanomaterials2079-49912020-02-0110340710.3390/nano10030407nano10030407Optically-Thin Broadband Graphene-Membrane PhotodetectorTania Moein0Darius Gailevičius1Tomas Katkus2Soon Hock Ng3Stefan Lundgaard4David J. Moss5Hamza Kurt6Vygantas Mizeikis7Kȩstutis Staliūnas8Mangirdas Malinauskas9Saulius Juodkazis10Optical Sciences Centre, Swinburne University of Technology, John St., Hawthorn, VIC 3122, AustraliaLaser Research Center, Faculty of Physics, Vilnius University, Saulėtekio Ave. 10, LT-10223 Vilnius, LithuaniaOptical Sciences Centre, Swinburne University of Technology, John St., Hawthorn, VIC 3122, AustraliaOptical Sciences Centre, Swinburne University of Technology, John St., Hawthorn, VIC 3122, AustraliaOptical Sciences Centre, Swinburne University of Technology, John St., Hawthorn, VIC 3122, AustraliaOptical Sciences Centre, Swinburne University of Technology, John St., Hawthorn, VIC 3122, AustraliaDepartment of Electrical and Electronics Engineering, TOBB University of Economics and Technology, Ankara 06560, TurkeyResearch Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8561, JapanDep. de Física, Universitat Politècnica de Catalunya (UPC), Colom 11, E-08222 Terrassa, SpainLaser Research Center, Faculty of Physics, Vilnius University, Saulėtekio Ave. 10, LT-10223 Vilnius, LithuaniaOptical Sciences Centre, Swinburne University of Technology, John St., Hawthorn, VIC 3122, AustraliaA broadband graphene-on-Si3N4-membrane photodetector for the visible-IR spectral range is realised by simple lithography and deposition techniques. Photo-current is produced upon illumination due to presence of the build-in potential between dissimilar metal electrodes on graphene as a result of charge transfer. The sensitivity of the photo-detector is <inline-formula> <math display="inline"> <semantics> <mrow> <mo>∼</mo> <mn>1</mn> <mo>.</mo> <mn>1</mn> </mrow> </semantics> </math> </inline-formula><inline-formula> <math display="inline"> <semantics> <mi mathvariant="sans-serif">μ</mi> </semantics> </math> </inline-formula>A/W when irradiated with 515 and 1030 nm wavelengths; a smaller separation between the metal contacts favors gradient formation of the built-in electric field and increases the efficiency of charge separation. This optically-thin graphene-on-membrane photodetector and its interdigitated counterpart has the potential to be used within 3D optical elements, such as photonic crystals, sensors, and wearable electronics applications where there is a need to minimise optical losses introduced by the detector.https://www.mdpi.com/2079-4991/10/3/407optically thin photodetectorgraphenesi<sub>3</sub>n<sub>4</sub> membranethermopower |
| spellingShingle | Tania Moein Darius Gailevičius Tomas Katkus Soon Hock Ng Stefan Lundgaard David J. Moss Hamza Kurt Vygantas Mizeikis Kȩstutis Staliūnas Mangirdas Malinauskas Saulius Juodkazis Optically-Thin Broadband Graphene-Membrane Photodetector Nanomaterials optically thin photodetector graphene si<sub>3</sub>n<sub>4</sub> membrane thermopower |
| title | Optically-Thin Broadband Graphene-Membrane Photodetector |
| title_full | Optically-Thin Broadband Graphene-Membrane Photodetector |
| title_fullStr | Optically-Thin Broadband Graphene-Membrane Photodetector |
| title_full_unstemmed | Optically-Thin Broadband Graphene-Membrane Photodetector |
| title_short | Optically-Thin Broadband Graphene-Membrane Photodetector |
| title_sort | optically thin broadband graphene membrane photodetector |
| topic | optically thin photodetector graphene si<sub>3</sub>n<sub>4</sub> membrane thermopower |
| url | https://www.mdpi.com/2079-4991/10/3/407 |
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