A broadband, self-powered, and polarization-sensitive PdSe₂ photodetector based on asymmetric van der Waals contacts
Self-powered photodetectors with broadband and polarization-sensitive photoresponse are desirable for many important applications such as wearable electronic devices and wireless communication systems. Recently, two-dimensional (2D) materials have been demonstrated as promising candidates for self-...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/166494 |
| _version_ | 1826116063876612096 |
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| author | Zhang, Xuran Dai, Mingjin Deng, Wenjie Zhang, Yongzhe Wang, Qi Jie |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Zhang, Xuran Dai, Mingjin Deng, Wenjie Zhang, Yongzhe Wang, Qi Jie |
| author_sort | Zhang, Xuran |
| collection | NTU |
| description | Self-powered photodetectors with broadband and polarization-sensitive photoresponse are desirable for
many important applications such as wearable electronic devices and wireless communication systems. Recently, two-dimensional (2D) materials have been demonstrated as promising candidates for self-powered photodetectors owing to their advantages in light–matter interaction, transport, electronic properties, and so on. However, their performance in speed, broadband response, and multifunction is still limited. Here, we report a PdSe2 photodetector with asymmetric van der Waals (vdWs) contacts formed by
using a homojunction configuration. This device achieves a high responsivity approaching 53 mA/W, a rise/decay time of about 0.72 ms/0.24 ms, and a detectivity of more than 5.17 × 1011 Jones in the visible-near infrared regime (532–1470 nm). In addition, a linear polarization-sensitive response can be observed with an anisotropy ratio of 1.11 at 532 nm and 1.62 at 1064 nm. Furthermore, a strong anisotropic response endows this photodetector withoutstanding polarization imaging capabilities, realizing a
contrast-enhanced degree of linear polarization imaging.Our proposed device architecture demonstrated the great potential of PdSe2-based asymmetric vdWs contacts for high-performance photodetectors operating without any external bias. |
| first_indexed | 2024-10-01T04:05:18Z |
| format | Journal Article |
| id | ntu-10356/166494 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:05:18Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1664942023-04-28T15:46:12Z A broadband, self-powered, and polarization-sensitive PdSe₂ photodetector based on asymmetric van der Waals contacts Zhang, Xuran Dai, Mingjin Deng, Wenjie Zhang, Yongzhe Wang, Qi Jie School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics Asymmetric Schottky Barriers PdSe2 Polarization Sensitive Self-Powered van der Waals Contacts Self-powered photodetectors with broadband and polarization-sensitive photoresponse are desirable for many important applications such as wearable electronic devices and wireless communication systems. Recently, two-dimensional (2D) materials have been demonstrated as promising candidates for self-powered photodetectors owing to their advantages in light–matter interaction, transport, electronic properties, and so on. However, their performance in speed, broadband response, and multifunction is still limited. Here, we report a PdSe2 photodetector with asymmetric van der Waals (vdWs) contacts formed by using a homojunction configuration. This device achieves a high responsivity approaching 53 mA/W, a rise/decay time of about 0.72 ms/0.24 ms, and a detectivity of more than 5.17 × 1011 Jones in the visible-near infrared regime (532–1470 nm). In addition, a linear polarization-sensitive response can be observed with an anisotropy ratio of 1.11 at 532 nm and 1.62 at 1064 nm. Furthermore, a strong anisotropic response endows this photodetector withoutstanding polarization imaging capabilities, realizing a contrast-enhanced degree of linear polarization imaging.Our proposed device architecture demonstrated the great potential of PdSe2-based asymmetric vdWs contacts for high-performance photodetectors operating without any external bias. Agency for Science, Technology and Research (A*STAR) Ministry of Education (MOE) National Research Foundation (NRF) Published version The authors want to thank for the support from National Research Foundation Singapore Program (NRF-CRP22-2019-0007) and A∗STAR grant number A18A7b0058, A2090b0144, and Ministry of Education Tier 2 Program (MOE-T2EP50120-0009). 2023-04-28T06:04:14Z 2023-04-28T06:04:14Z 2023 Journal Article Zhang, X., Dai, M., Deng, W., Zhang, Y. & Wang, Q. J. (2023). A broadband, self-powered, and polarization-sensitive PdSe₂ photodetector based on asymmetric van der Waals contacts. Nanophotonics, 12(3), 607-618. https://dx.doi.org/10.1515/nanoph-2022-0660 2192-8606 https://hdl.handle.net/10356/166494 10.1515/nanoph-2022-0660 3 12 607 618 en NRF-CRP22-2019-0007 A18A7b0058 A2090b0144 MOE-T2EP50120-0009 Nanophotonics © 2022 The author(s), published by De Gruyter. This work is licensed under the Creative Commons Attribution 4.0 International License. application/pdf |
| spellingShingle | Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics Asymmetric Schottky Barriers PdSe2 Polarization Sensitive Self-Powered van der Waals Contacts Zhang, Xuran Dai, Mingjin Deng, Wenjie Zhang, Yongzhe Wang, Qi Jie A broadband, self-powered, and polarization-sensitive PdSe₂ photodetector based on asymmetric van der Waals contacts |
| title | A broadband, self-powered, and polarization-sensitive PdSe₂ photodetector based on asymmetric van der Waals contacts |
| title_full | A broadband, self-powered, and polarization-sensitive PdSe₂ photodetector based on asymmetric van der Waals contacts |
| title_fullStr | A broadband, self-powered, and polarization-sensitive PdSe₂ photodetector based on asymmetric van der Waals contacts |
| title_full_unstemmed | A broadband, self-powered, and polarization-sensitive PdSe₂ photodetector based on asymmetric van der Waals contacts |
| title_short | A broadband, self-powered, and polarization-sensitive PdSe₂ photodetector based on asymmetric van der Waals contacts |
| title_sort | broadband self powered and polarization sensitive pdse₂ photodetector based on asymmetric van der waals contacts |
| topic | Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics Asymmetric Schottky Barriers PdSe2 Polarization Sensitive Self-Powered van der Waals Contacts |
| url | https://hdl.handle.net/10356/166494 |
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