Hole array enhanced dual-band infrared photodetection
Photonic structures have been attracting more attention due to their ability to capture, concentrate and propagate optical energy. In this work, we propose a photon-trapping hole-array structure integrated in a nip InAsSb-GaSb heterostructure for the enhancement of the photoresponse in both near- an...
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sg-ntu-dr.10356-1556722022-09-21T07:05:10Z Hole array enhanced dual-band infrared photodetection Suo, Fei Tong, Jinchao Chen, Xiren Xu, Zhengji Zhang, Dao Hua School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Superlattices Wave Photonic structures have been attracting more attention due to their ability to capture, concentrate and propagate optical energy. In this work, we propose a photon-trapping hole-array structure integrated in a nip InAsSb-GaSb heterostructure for the enhancement of the photoresponse in both near- and mid-infrared regions. The proposed symmetrical hole array can increase the photon lifetime inside the absorption layer and reduce reflection without polarization dependence. Significant enhancements in absorption and photoelectric conversion efficiency are demonstrated in dual bands for unpolarized incidence. The enhancement factors of responsivity at room temperature under zero-bias are 1.12 and 1.33 for the near- and mid-infrared, respectively, and they are increased to 1.71 and 1.79 when temperature drops to the thermoelectric cooling temperature of 220 K. Besides, such an integrated hole array also slightly improves working frequency bandwidth and response speed. This work provides a promising way for high-efficiency polarization-independent photoelectric conversion in different electromagnetic wave ranges. Agency for Science, Technology and Research (A*STAR) Published version Agency for Science, Technology and Research (SERC 1720700038, SERC A1883c0002). 2022-03-15T08:51:16Z 2022-03-15T08:51:16Z 2021 Journal Article Suo, F., Tong, J., Chen, X., Xu, Z. & Zhang, D. H. (2021). Hole array enhanced dual-band infrared photodetection. Optics Express, 29(5), 6424-6433. https://dx.doi.org/10.1364/OE.415987 1094-4087 https://hdl.handle.net/10356/155672 10.1364/OE.415987 33726163 2-s2.0-85101322042 5 29 6424 6433 en SERC 1720700038 SERC A1883c0002 Optics Express © 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for noncommercial purposes and appropriate attribution is maintained. All other rights are reserved. application/pdf |
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Engineering::Electrical and electronic engineering Superlattices Wave Suo, Fei Tong, Jinchao Chen, Xiren Xu, Zhengji Zhang, Dao Hua Hole array enhanced dual-band infrared photodetection |
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Photonic structures have been attracting more attention due to their ability to capture, concentrate and propagate optical energy. In this work, we propose a photon-trapping hole-array structure integrated in a nip InAsSb-GaSb heterostructure for the enhancement of the photoresponse in both near- and mid-infrared regions. The proposed symmetrical hole array can increase the photon lifetime inside the absorption layer and reduce reflection without polarization dependence. Significant enhancements in absorption and photoelectric conversion efficiency are demonstrated in dual bands for unpolarized incidence. The enhancement factors of responsivity at room temperature under zero-bias are 1.12 and 1.33 for the near- and mid-infrared, respectively, and they are increased to 1.71 and 1.79 when temperature drops to the thermoelectric cooling temperature of 220 K. Besides, such an integrated hole array also slightly improves working frequency bandwidth and response speed. This work provides a promising way for high-efficiency polarization-independent photoelectric conversion in different electromagnetic wave ranges. |
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School of Electrical and Electronic Engineering |
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School of Electrical and Electronic Engineering Suo, Fei Tong, Jinchao Chen, Xiren Xu, Zhengji Zhang, Dao Hua |
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Article |
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Suo, Fei Tong, Jinchao Chen, Xiren Xu, Zhengji Zhang, Dao Hua |
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Suo, Fei |
title |
Hole array enhanced dual-band infrared photodetection |
title_short |
Hole array enhanced dual-band infrared photodetection |
title_full |
Hole array enhanced dual-band infrared photodetection |
title_fullStr |
Hole array enhanced dual-band infrared photodetection |
title_full_unstemmed |
Hole array enhanced dual-band infrared photodetection |
title_sort |
hole array enhanced dual-band infrared photodetection |
publishDate |
2022 |
url |
https://hdl.handle.net/10356/155672 |
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1745574661551292416 |