The International Telecommunication Union(ITU)has introduced the concept of“intelligent connectivity for 2030”,which is driving the development of 6G technology.This next-generation wireless network is finding appli...The International Telecommunication Union(ITU)has introduced the concept of“intelligent connectivity for 2030”,which is driving the development of 6G technology.This next-generation wireless network is finding applications across various sectors,including smart cities,autonomous driving,holographic imaging,and satellite communications.When compared to 5G,the demands for higher data transmission rates,lower latency,and more efficient use of spectrum have become even more critical.展开更多
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 lim...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 6.7μs.This work provides an effective route for the development of high-performance RT THz detection strategies,paving the way for enhanced THz technology applications.展开更多
基金supported by the National Key R&D Program of China(Grant No.2023YFB2905600)the National Natural Science Foundation of China(Grant Nos.62127802,62331004,62305067,U24B20142,U24B20168,62427815)the Key Project of Jiangsu Province of China(Grant No.BE2023001-4)。
文摘The International Telecommunication Union(ITU)has introduced the concept of“intelligent connectivity for 2030”,which is driving the development of 6G technology.This next-generation wireless network is finding applications across various sectors,including smart cities,autonomous driving,holographic imaging,and satellite communications.When compared to 5G,the demands for higher data transmission rates,lower latency,and more efficient use of spectrum have become even more critical.
基金supported by the National Natural Science Foundation of China(11933006,61805060,U2141240,and 62175045)National Key Research and Development Project of China(2023YFB2806700)+5 种基金Zhejiang Provincial Natural Science Foundation of China(LGF21F050001)Hangzhou Science and Technology Bureau of Zhejiang Province(TD2020002)Hangzhou Key Research and Development Program(2024SZD1A39)Research Funds of Hangzhou Institute for Advanced Study(B02006C019019 and 2022ZZ01007)Zhejiang Provincial Natural Science Foundation of China(no.LD25F040001)Hangzhou Joint Fund of the Zhejiang Provincial Natural Science Foundation of China(no.LHZQN25F050001).
文摘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 6.7μs.This work provides an effective route for the development of high-performance RT THz detection strategies,paving the way for enhanced THz technology applications.
