Self-powered broadband α-MoO3/Si photodetector based on photo-induced thermoelectric effect

Zhao, Shirong; Liu, Yunjie; Wu, Yupeng; Liu, Yingming; Guo, Fuhai; Li, Siqi; Yu, Weizhuo; Liu, Guanchu; Hao, Jingyi; Wang, Han; Hao, Lanzhong

doi:10.1016/j.ceramint.2022.05.166

Cited by 16 publications

(7 citation statements)

References 40 publications

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“…The peak value of the current is increased from 0.006 to 0.227 nA with ≈38 times increment as the V GS is from 50 to 90 V. These data indicate that the PTE effect might be present in the Te/WSe 2 MDHJs PDs which is caused by the introduction of V GS . [ 7b ] The appearance of PTE is correlated to the construction of the asymmetric Te/WSe 2 heterojunction device, and the larger thermoelectric figure of merit and adjustability of WSe 2 with its conduction type and carrier concentration.…”

Section: Resultsmentioning

confidence: 99%

“…[ 6 ] Transient response signals are observed in MoO 3 /Si and SnSe/Si PDs which are attributed to the appearance of the PTE effect where an extra electric field is generated by a photo‐induced temperature gradient at the interface. [ 7 ] Therefore, MDHJs PDs are the prospect in human vision systems, in‐sensor computing, computing in memory, and neuromorphic devices through the various synergistic effects of PC, PV, and PTE. [ 8 ]…”

Section: Introductionmentioning

confidence: 99%

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Electrically Tunable Multiple‐Effects Synergistic and Boosted Photoelectric Performance in Te/WSe₂ Mixed‐Dimensional Heterojunction Phototransistors

Cao,

Hu,

Zhang

et al. 2024

Advanced Science

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Mix‐dimensional heterojunctions (MDHJs) photodetectors (PDs) built from bulk and 2D materials are the research focus to develop hetero‐integrated and multifunctional optoelectronic sensor systems. However, it is still an open issue for achieving multiple effects synergistic characteristics to boost sensitivity and enrich the prospect in artificial bionic systems. Herein, electrically tunable Te/WSe2 MDHJs phototransistors are constructed, and an ultralow dark current below 0.1 pA and a large on/off rectification ratio of 106 is achieved. Photoconductive, photovoltaic, and photo‐thermoelectric conversions are simultaneously demonstrated by tuning the gate and bias. By these synergistic effects, responsivity and detectivity respectively reach 13.9 A W−1 and 1.37 × 1012 Jones with 400 times increment. The Te/WSe2 MDHJs PDs can function as artificial bionic visual systems due to the comparable response time to those of the human visual system and the presence of transient positive and negative response signals. This work offers an available strategy for intelligent optoelectronic devices with hetero‐integration and multifunctions.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electrically Tunable Multiple‐Effects Synergistic and Boosted Photoelectric Performance in Te/WSe₂ Mixed‐Dimensional Heterojunction Phototransistors

Cao,

Hu,

Zhang

et al. 2024

Advanced Science

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“…Firstly, the absorption layer (also called the absorber), is applied to absorb the THz wave radiation. Typically, a patterned metamaterial [26,55] or a semiconductor layer [56,57] is used as the absorber to enhance the absorption of THz waves and maximize the interaction between the THz radiation and the detector. Secondly, as mentioned above, the thermoelectric element transforms the absorbed THz radiation into a detectable electrical signal with the assistance of an absorption layer.…”

Section: Photothermoelectric Detectormentioning

confidence: 99%

Terahertz communication: detection and signal processing

Lu,

Wang,

Zhou

et al. 2024

Nanotechnology

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The development of 6G networks has promoted related research based on terahertz communication. As submillimeter radiation, signal transportation via terahertz waves has several superior properties, including non-ionizing and easy penetration of non-metallic materials. This paper provides an overview of different terahertz detectors based on various mechanisms. Additionally, the detailed fabrication process, structural design, and the improvement strategies are summarized. Following that, it is essential and necessary to prevent the practical signal from noise, and methods such as wavelet transform, UM-MIMO and decoding have been introduced. This paper highlights the detection process of the terahertz wave system and signal processing after the collection of signal data.

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“…However, recent reports have proven that with a suitable architecture and material structure, practical applications using molybdenum oxides as a PD are possible. Zhao et al [119] report MoO 3 /Si heterojunction PDs fabricated by using an e-beam evaporation method. The I-V curve under 405 nm light irradiation in figure 10(a) shows the standard photosensing characteristics of such a design.…”

Section: Pdsmentioning

confidence: 99%

The versatile family of molybdenum oxides: synthesis, properties, and recent applications

Concepción

Melo

2023

J. Phys.: Condens. Matter

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The family of molybdenum oxides has numerous advantages that make them strong candidates for high-value research and various commercial applications. The variation of their multiple oxidation states allows their existence in a wide range of compositions and morphologies that converts them into highly versatile and tunable materials for incorporation into energy, electronics, optical, and biological systems. In this review, a survey is presented of the most general properties of molybdenum oxides including the crystalline structures and the physical properties, with emphasis on present issues and challenging scientific and technological aspects. A section is devoted to the thermodynamical properties and the most common preparation techniques. Then, recent applications are described, including photodetectors, thermoelectric devices, solar cells, photo-thermal therapies, gas sensors, and energy storage.

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Self-powered broadband α-MoO3/Si photodetector based on photo-induced thermoelectric effect

Cited by 16 publications

References 40 publications

Electrically Tunable Multiple‐Effects Synergistic and Boosted Photoelectric Performance in Te/WSe₂ Mixed‐Dimensional Heterojunction Phototransistors

Electrically Tunable Multiple‐Effects Synergistic and Boosted Photoelectric Performance in Te/WSe₂ Mixed‐Dimensional Heterojunction Phototransistors

Terahertz communication: detection and signal processing

The versatile family of molybdenum oxides: synthesis, properties, and recent applications

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Self-powered broadband α-MoO3/Si photodetector based on photo-induced thermoelectric effect

Cited by 16 publications

References 40 publications

Electrically Tunable Multiple‐Effects Synergistic and Boosted Photoelectric Performance in Te/WSe2 Mixed‐Dimensional Heterojunction Phototransistors

Electrically Tunable Multiple‐Effects Synergistic and Boosted Photoelectric Performance in Te/WSe2 Mixed‐Dimensional Heterojunction Phototransistors

Terahertz communication: detection and signal processing

The versatile family of molybdenum oxides: synthesis, properties, and recent applications

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Product

Resources

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Electrically Tunable Multiple‐Effects Synergistic and Boosted Photoelectric Performance in Te/WSe₂ Mixed‐Dimensional Heterojunction Phototransistors

Electrically Tunable Multiple‐Effects Synergistic and Boosted Photoelectric Performance in Te/WSe₂ Mixed‐Dimensional Heterojunction Phototransistors