Design of resonant cavity-enhanced InAs/GaSb superlattice LWIR photodetector
Type-II superlattices have recently emerged as a focal point in long-wavelength infrared (LWIR) detection, showcasing remarkable potential across various applications. In this work, we have conducted a theoretical investigation into the band structure and optical properties of 14/7 monolayers (ML) I...
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2025-01-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0245787 |
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| author | Ruixin Gong Lianqing Zhu Lidan Lu Qingsong Feng Yang Chen Bingfeng Liu Yuhao Chen Yuanbo Zhang Shiya Zhang Zhiying Liu |
| author_facet | Ruixin Gong Lianqing Zhu Lidan Lu Qingsong Feng Yang Chen Bingfeng Liu Yuhao Chen Yuanbo Zhang Shiya Zhang Zhiying Liu |
| author_sort | Ruixin Gong |
| collection | DOAJ |
| description | Type-II superlattices have recently emerged as a focal point in long-wavelength infrared (LWIR) detection, showcasing remarkable potential across various applications. In this work, we have conducted a theoretical investigation into the band structure and optical properties of 14/7 monolayers (ML) InAs/GaSb superlattices (SLs), employing density functional theory. Our findings indicate that the energy gap of these SLs is determined to be 0.111 eV through energy band structure analysis using the Heyd–Scuseria–Ernzerhof method. Moreover, we have designed a resonant cavity-enhanced “Φ” structure for the 14/7 ML InAs/GaSb SLs infrared detector. This innovative design markedly enhances absorption efficiency, increasing it from 16.48% to an impressive 76.35% at the 11.2 μm wavelength. Further analysis includes a detailed examination of the electric field distribution within this structure and a comprehensive examination of the enhanced plasmonic resonator’s perfect absorption phenomenon. The results from these analyses underscore the exceptional absorption capabilities of our resonant cavity-enhanced infrared detector, indicating its potential for significant applications in LWIR SLs focal plane. |
| format | Article |
| id | doaj-art-76c8bfede0254a22bcc77edb9c7b7281 |
| institution | Kabale University |
| issn | 2158-3226 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj-art-76c8bfede0254a22bcc77edb9c7b72812025-02-03T16:40:43ZengAIP Publishing LLCAIP Advances2158-32262025-01-01151015327015327-1110.1063/5.0245787Design of resonant cavity-enhanced InAs/GaSb superlattice LWIR photodetectorRuixin Gong0Lianqing Zhu1Lidan Lu2Qingsong Feng3Yang Chen4Bingfeng Liu5Yuhao Chen6Yuanbo Zhang7Shiya Zhang8Zhiying Liu9School of Opto-Electronic Engineering, Changchun University of Science and Technology, Changchun 130013, ChinaKey Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science and Technology University, Beijing 100015, ChinaKey Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science and Technology University, Beijing 100015, ChinaKey Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science and Technology University, Beijing 100015, ChinaKey Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science and Technology University, Beijing 100015, ChinaSchool of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, ChinaKey Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science and Technology University, Beijing 100015, ChinaKey Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science and Technology University, Beijing 100015, ChinaSchool of Opto-Electronic Engineering, Changchun University of Science and Technology, Changchun 130013, ChinaSchool of Opto-Electronic Engineering, Changchun University of Science and Technology, Changchun 130013, ChinaType-II superlattices have recently emerged as a focal point in long-wavelength infrared (LWIR) detection, showcasing remarkable potential across various applications. In this work, we have conducted a theoretical investigation into the band structure and optical properties of 14/7 monolayers (ML) InAs/GaSb superlattices (SLs), employing density functional theory. Our findings indicate that the energy gap of these SLs is determined to be 0.111 eV through energy band structure analysis using the Heyd–Scuseria–Ernzerhof method. Moreover, we have designed a resonant cavity-enhanced “Φ” structure for the 14/7 ML InAs/GaSb SLs infrared detector. This innovative design markedly enhances absorption efficiency, increasing it from 16.48% to an impressive 76.35% at the 11.2 μm wavelength. Further analysis includes a detailed examination of the electric field distribution within this structure and a comprehensive examination of the enhanced plasmonic resonator’s perfect absorption phenomenon. The results from these analyses underscore the exceptional absorption capabilities of our resonant cavity-enhanced infrared detector, indicating its potential for significant applications in LWIR SLs focal plane.http://dx.doi.org/10.1063/5.0245787 |
| spellingShingle | Ruixin Gong Lianqing Zhu Lidan Lu Qingsong Feng Yang Chen Bingfeng Liu Yuhao Chen Yuanbo Zhang Shiya Zhang Zhiying Liu Design of resonant cavity-enhanced InAs/GaSb superlattice LWIR photodetector AIP Advances |
| title | Design of resonant cavity-enhanced InAs/GaSb superlattice LWIR photodetector |
| title_full | Design of resonant cavity-enhanced InAs/GaSb superlattice LWIR photodetector |
| title_fullStr | Design of resonant cavity-enhanced InAs/GaSb superlattice LWIR photodetector |
| title_full_unstemmed | Design of resonant cavity-enhanced InAs/GaSb superlattice LWIR photodetector |
| title_short | Design of resonant cavity-enhanced InAs/GaSb superlattice LWIR photodetector |
| title_sort | design of resonant cavity enhanced inas gasb superlattice lwir photodetector |
| url | http://dx.doi.org/10.1063/5.0245787 |
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