High-Performance Room-Temperature Terahertz Photodetection Using 2-Dimensional Electron Gas Channel Transport
Room-temperature (RT) terahertz (THz) detection finds widespread applications in security inspection, communication, biomedical imaging, and scientific research. However, the state-of-the-art detection strategies are still limited by issues such as low sensitivity, narrow response range, slow respon...
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| Format: | Article |
| Language: | English |
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American Association for the Advancement of Science (AAAS)
2025-01-01
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| Series: | Research |
| Online Access: | https://spj.science.org/doi/10.34133/research.0656 |
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| author | Mengjuan Liu Yongzhen Li Ziyang Ren Yao Wang Haiming Zhu Qinxi Qiu Nasir Ali He Zhu Jiaqi Zhu Weien Lai Zhiming Huang Huizhen Wu |
| author_facet | Mengjuan Liu Yongzhen Li Ziyang Ren Yao Wang Haiming Zhu Qinxi Qiu Nasir Ali He Zhu Jiaqi Zhu Weien Lai Zhiming Huang Huizhen Wu |
| author_sort | Mengjuan Liu |
| collection | DOAJ |
| description | Room-temperature (RT) terahertz (THz) detection finds widespread applications in security inspection, communication, biomedical imaging, and scientific research. However, the state-of-the-art detection strategies are still limited by issues such as low sensitivity, narrow response range, slow response speed, complex fabrication techniques, and difficulties in scaling up to large arrays. Here, we present a high-sensitivity, broadband-response, and high-speed RT THz detection strategy by utilizing a deep subwavelength metal–semiconductor–metal (MSM) structure. The spontaneously formed 2-dimensional electron gas (2DEG) at the CdTe/PbTe interface provides a superior transport channel characterized by high carrier concentration, low scattering, and high mobility. The synergy of the electromagnetic induced well effect formed in the MSM structure, and the efficient and rapid transport capabilities of the 2DEG channel give rise to an impressive performance improvement. The proposed 2DEG photodetector exhibits a broad frequency range from 22 to 519 GHz, an ultralow noise equivalent power of 3.0 × 10−14 W Hz−1/2 at 166 GHz, and a short response time of 6.7 μs. This work provides an effective route for the development of high-performance RT THz detection strategies, paving the way for enhanced THz technology applications. |
| format | Article |
| id | doaj-art-4842db5a68f64faea9b8cc1aa98dcc70 |
| institution | Kabale University |
| issn | 2639-5274 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | American Association for the Advancement of Science (AAAS) |
| record_format | Article |
| series | Research |
| spelling | doaj-art-4842db5a68f64faea9b8cc1aa98dcc702025-08-20T03:40:43ZengAmerican Association for the Advancement of Science (AAAS)Research2639-52742025-01-01810.34133/research.0656High-Performance Room-Temperature Terahertz Photodetection Using 2-Dimensional Electron Gas Channel TransportMengjuan Liu0Yongzhen Li1Ziyang Ren2Yao Wang3Haiming Zhu4Qinxi Qiu5Nasir Ali6He Zhu7Jiaqi Zhu8Weien Lai9Zhiming Huang10Huizhen Wu11Zhejiang Key Laboratory of Micro-nano Quantum Chips and Quantum Control, School of Physics, and State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, Hangzhou 310058, China.State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China.Zhejiang Key Laboratory of Micro-nano Quantum Chips and Quantum Control, School of Physics, and State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, Hangzhou 310058, China.Zhejiang Key Laboratory of Micro-nano Quantum Chips and Quantum Control, School of Physics, and State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, Hangzhou 310058, China.Zhejiang Key Laboratory of Micro-nano Quantum Chips and Quantum Control, School of Physics, and State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, Hangzhou 310058, China.State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China.Computing Research Center for Intelligent Manufacturing, Zhejiang Lab, Yuhang District, Hangzhou, Zhejiang 311121, China.University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, China.University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, China.School of Instrument Science and Opto-electronics Engineering, Hefei University of Technology, Hefei, Anhui 230009, China.State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China.Zhejiang Key Laboratory of Micro-nano Quantum Chips and Quantum Control, School of Physics, and State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, Hangzhou 310058, China.Room-temperature (RT) terahertz (THz) detection finds widespread applications in security inspection, communication, biomedical imaging, and scientific research. However, the state-of-the-art detection strategies are still limited by issues such as low sensitivity, narrow response range, slow response speed, complex fabrication techniques, and difficulties in scaling up to large arrays. Here, we present a high-sensitivity, broadband-response, and high-speed RT THz detection strategy by utilizing a deep subwavelength metal–semiconductor–metal (MSM) structure. The spontaneously formed 2-dimensional electron gas (2DEG) at the CdTe/PbTe interface provides a superior transport channel characterized by high carrier concentration, low scattering, and high mobility. The synergy of the electromagnetic induced well effect formed in the MSM structure, and the efficient and rapid transport capabilities of the 2DEG channel give rise to an impressive performance improvement. The proposed 2DEG photodetector exhibits a broad frequency range from 22 to 519 GHz, an ultralow noise equivalent power of 3.0 × 10−14 W Hz−1/2 at 166 GHz, and a short response time of 6.7 μs. This work provides an effective route for the development of high-performance RT THz detection strategies, paving the way for enhanced THz technology applications.https://spj.science.org/doi/10.34133/research.0656 |
| spellingShingle | Mengjuan Liu Yongzhen Li Ziyang Ren Yao Wang Haiming Zhu Qinxi Qiu Nasir Ali He Zhu Jiaqi Zhu Weien Lai Zhiming Huang Huizhen Wu High-Performance Room-Temperature Terahertz Photodetection Using 2-Dimensional Electron Gas Channel Transport Research |
| title | High-Performance Room-Temperature Terahertz Photodetection Using 2-Dimensional Electron Gas Channel Transport |
| title_full | High-Performance Room-Temperature Terahertz Photodetection Using 2-Dimensional Electron Gas Channel Transport |
| title_fullStr | High-Performance Room-Temperature Terahertz Photodetection Using 2-Dimensional Electron Gas Channel Transport |
| title_full_unstemmed | High-Performance Room-Temperature Terahertz Photodetection Using 2-Dimensional Electron Gas Channel Transport |
| title_short | High-Performance Room-Temperature Terahertz Photodetection Using 2-Dimensional Electron Gas Channel Transport |
| title_sort | high performance room temperature terahertz photodetection using 2 dimensional electron gas channel transport |
| url | https://spj.science.org/doi/10.34133/research.0656 |
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