Impact of Different Metals on the Performance of Slab Tamm Plasmon Resonators
We investigate the concept of slab Tamm plasmons (STP) in regard to their properties as resonant absorber or emitter structures in the mid-infrared spectral region. In particular, we compare the selective absorption characteristics resulting from different choices of absorbing material, namely Ag, W...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-11-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/20/23/6804 |
| _version_ | 1797546408108097536 |
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| author | Gerald Pühringer Cristina Consani Bernhard Jakoby |
| author_facet | Gerald Pühringer Cristina Consani Bernhard Jakoby |
| author_sort | Gerald Pühringer |
| collection | DOAJ |
| description | We investigate the concept of slab Tamm plasmons (STP) in regard to their properties as resonant absorber or emitter structures in the mid-infrared spectral region. In particular, we compare the selective absorption characteristics resulting from different choices of absorbing material, namely Ag, W, Mo or highly doped Si. We devised a simplified optimization procedure using finite element simulations for the calculation of the absorption together with the application of micro-genetic algorithm (GA) optimization. As characteristic for plasmonic structures, the specific choice of the metallic absorber material strongly determines the achievable quality factor (<i>Q</i>). We show that STP absorbers are able to mitigate the degradation of <i>Q</i> for less reflective metals or even non-metals such as doped silicon as plasmonic absorber material. Moreover, our results strongly indicate that the maximum achievable plasmon-enhanced absorption does not depend on the choice of the plasmonic material presuming an optimized configuration is obtained via the GA process. As a result, absorptances in the order of 50–80% could be achieved for any absorber material depending on the slab thickness (up to 1.1 µm) and a target resonance wavelength of 4.26 µm (CO<sub>2</sub> absorption line). The proposed structures are compatible with modern semiconductor mass fabrication processes. At the same time, the optimization procedure allows us to choose the best plasmonic material for the corresponding application of the STP structure. Therefore, we believe that our results represent crucial advances towards corresponding integrated resonant absorber and thermal emitter components. |
| first_indexed | 2024-03-10T14:29:18Z |
| format | Article |
| id | doaj.art-9b5ff3e98f554978b980e6b1d3dcddf2 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T14:29:18Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-9b5ff3e98f554978b980e6b1d3dcddf22023-11-20T22:44:26ZengMDPI AGSensors1424-82202020-11-012023680410.3390/s20236804Impact of Different Metals on the Performance of Slab Tamm Plasmon ResonatorsGerald Pühringer0Cristina Consani1Bernhard Jakoby2Institute for Microelectronics and Microsensors, Johannes Kepler University, 4040 Linz, AustriaSilicon Austria Labs GmbH, 9524 Villach, AustriaInstitute for Microelectronics and Microsensors, Johannes Kepler University, 4040 Linz, AustriaWe investigate the concept of slab Tamm plasmons (STP) in regard to their properties as resonant absorber or emitter structures in the mid-infrared spectral region. In particular, we compare the selective absorption characteristics resulting from different choices of absorbing material, namely Ag, W, Mo or highly doped Si. We devised a simplified optimization procedure using finite element simulations for the calculation of the absorption together with the application of micro-genetic algorithm (GA) optimization. As characteristic for plasmonic structures, the specific choice of the metallic absorber material strongly determines the achievable quality factor (<i>Q</i>). We show that STP absorbers are able to mitigate the degradation of <i>Q</i> for less reflective metals or even non-metals such as doped silicon as plasmonic absorber material. Moreover, our results strongly indicate that the maximum achievable plasmon-enhanced absorption does not depend on the choice of the plasmonic material presuming an optimized configuration is obtained via the GA process. As a result, absorptances in the order of 50–80% could be achieved for any absorber material depending on the slab thickness (up to 1.1 µm) and a target resonance wavelength of 4.26 µm (CO<sub>2</sub> absorption line). The proposed structures are compatible with modern semiconductor mass fabrication processes. At the same time, the optimization procedure allows us to choose the best plasmonic material for the corresponding application of the STP structure. Therefore, we believe that our results represent crucial advances towards corresponding integrated resonant absorber and thermal emitter components.https://www.mdpi.com/1424-8220/20/23/6804thermal emittertamm plasmonssilicon photonicsmid-infrared |
| spellingShingle | Gerald Pühringer Cristina Consani Bernhard Jakoby Impact of Different Metals on the Performance of Slab Tamm Plasmon Resonators Sensors thermal emitter tamm plasmons silicon photonics mid-infrared |
| title | Impact of Different Metals on the Performance of Slab Tamm Plasmon Resonators |
| title_full | Impact of Different Metals on the Performance of Slab Tamm Plasmon Resonators |
| title_fullStr | Impact of Different Metals on the Performance of Slab Tamm Plasmon Resonators |
| title_full_unstemmed | Impact of Different Metals on the Performance of Slab Tamm Plasmon Resonators |
| title_short | Impact of Different Metals on the Performance of Slab Tamm Plasmon Resonators |
| title_sort | impact of different metals on the performance of slab tamm plasmon resonators |
| topic | thermal emitter tamm plasmons silicon photonics mid-infrared |
| url | https://www.mdpi.com/1424-8220/20/23/6804 |
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