首页|Broadband,Polarization-Sensitive,and Self-Powered High-Performance Photodetection of Hetero-lntegrated MoS2 on Lithium Niobate

Broadband,Polarization-Sensitive,and Self-Powered High-Performance Photodetection of Hetero-lntegrated MoS2 on Lithium Niobate

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High-performance photodetectors hold promising potential in optical communication and imaging systems.However,conventional counterparts are suffering narrow detection range,high power consumption,and poor polarization sensitivity.Characteristics originating from switchable polarization in ferroelectrics can be used to optimize the photo-to-electric procedure and improve the photodetection performance.In this regard,we constructed a configuration by integrating 2-dimensional molybdenum disulfide(MoS2)with ferroelectric lithium niobate(LiNbO3),resulting in the MoS2/LiNbO3 heterostructured photodetector.Benefiting from the pyroelectric effect of LiNbO3,the limitation of bandgap on the detection range can be broken,thus broadening the response band of the detector to 365 to 1,064 nm,as well as enabling the self-powered characteristic.Meanwhile,high carrier mobility and decent light absorbance of MoS2 introduce robust light-matter interactions with the underlying Li N bO3,leading to ultrafast r ise/fa ll times of≈150 μs/250 μs and switching ratios of up to ≈190.Moreover,the highest responsivity,specific detectivity,and external quantum efficiency achieved were 17.3 A-W-1,4.3 × 1011 Jones,and 4,645.78％,respectively.Furthermore,because of the anisotropy of the spontaneous-polarized LiNbO3 substrate,the photocurrent of the device achieved a dichroic ratio of 7.42,comparing favorably to most MoS2-based photodetectors.This work demonstrates the integration potential between ferroelectric LiNbO3 and 2-dimensional materials for high-performance photodetection.

Zhigang He、Heyuan Guan、Xijie Liang、Junteng Chen、Manyan Xie、Kaiwen Luo、Ran An、Liang Ma、Fengkai Ma、Tiefeng Yang、Huihui Lu

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Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications,Jinan University,Guangzhou 510632,China

Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes,Jinan University,Guangzhou 510632,China

Institute of Fluid Physics,China Academy of Engineering Physics,Mianyang 621900,China

College of Physics and Electronic Engineering,Hengyang Normal University,Hengyang 421008,China

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Chinese Academy of Sciences Shanghai Institute of Silicate for the band structure calculationNSAFNSAFNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaYouth Talent Support Programme of Guangdong Provincial Association for Science and TechnologyNatural Science Foundation of Guangdong ProvinceNatural Science Foundation of Guangdong ProvinceNatural Science Foundation of Guangdong ProvinceFundamental and application foundation project of GuangzhouFundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universities

U2030103U2230111617750846207508812005210SKXR-C2023042020A15150107912021A05050300362022A-15151109702022010106542162210721622403

2024

10.34133/research.0199

研究(英文)

研究(英文)

CSTPCD
ISSN：
年,卷(期)：2024.2024(2)
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