Sensitivity enhancement of two-dimensional WSe<sub>2</sub>-based photodetectors by ordered Ag plasmonic nanostructures

Guskov, Andrey; Avdizhiyan, A. Yu.; Lavrov, S. D.; Galiev, R. R.; Gorbatova, A. V.; Buryakov, A. M.; Мишина, Е. Д.

doi:10.35848/1882-0786/ac0abe

Cited by 6 publications

(3 citation statements)

References 33 publications

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“…The geometrical parameters of such low-dimensional structures significantly affect the final characteristics of the created devices [ 24 ]. At the same time, their influence can be highly nonlinear.…”

Section: Methodsmentioning

confidence: 99%

Polarization Sensitive Photodetectors Based on Two-Dimensional WSe2

2022

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In this work we show the possibility of imparting polarization-sensitive properties to two-dimensional films of graphene-like semiconductors, using WSe2 as an example, by the application of ordered silver triangular nanoprisms. In addition, such nanoprisms made it possible to increase the optical sensitivity of optical detectors created on two-dimensional films by a factor of five due to surface plasmon resonance. The peculiarities of the surface plasmon resonance were shown by theoretical modeling, and the optimal conditions of its occurrence were determined. This article demonstrates an effective approach to creating spectrally selective, polarization-sensitive detectors based on two-dimensional graphene-like semiconductors.

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Section: Methodsmentioning

confidence: 99%

Polarization Sensitive Photodetectors Based on Two-Dimensional WSe2

2022

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“…In this consideration, this improvement strategy exhibits broad universality. Thus far, in addition to MoS 2 , researchers have actually improved a series of 2DLM photodetectors by using plasmonic optical antennas, including SnSe 2 [148], SnS 2 [149], ReS 2 [150], InSe [151], etc. On the whole, the integration of optical antennas with a pronounced LSPR effect provides a universal protocol for improving the 2DLM photodetectors without compromising the response rate.…”

Section: Light Harvesting Enhancementmentioning

confidence: 99%

Emerging Schemes for Advancing 2D Material Photoconductive-Type Photodetectors

Liang,

Ma,

et al. 2023

Materials

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By virtue of the widely tunable band structure, dangling-bond-free surface, gate electrostatic controllability, excellent flexibility, and high light transmittance, 2D layered materials have shown indisputable application prospects in the field of optoelectronic sensing. However, 2D materials commonly suffer from weak light absorption, limited carrier lifetime, and pronounced interfacial effects, which have led to the necessity for further improvement in the performance of 2D material photodetectors to make them fully competent for the numerous requirements of practical applications. In recent years, researchers have explored multifarious improvement methods for 2D material photodetectors from a variety of perspectives. To promote the further development and innovation of 2D material photodetectors, this review epitomizes the latest research progress in improving the performance of 2D material photodetectors, including improvement in crystalline quality, band engineering, interface passivation, light harvesting enhancement, channel depletion, channel shrinkage, and selective carrier trapping, with the focus on their underlying working mechanisms. In the end, the ongoing challenges in this burgeoning field are underscored, and potential strategies addressing them have been proposed. On the whole, this review sheds light on improving the performance of 2D material photodetectors in the upcoming future.

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“…In the artificial retina system, optoelectronic sensors, which can emulate the neuron behaviors in the retina, are indispensable for visible information acquisition. In the past few decades, diverse optoelectronic sensors have been designed for artificial retina systems. − Most of them were based on 2D (two-dimensional) materials because 2D materials are capable of perceiving optical information and converting it into electrical signals for transmission and processing. , Among various 2D materials, tungsten diselenide (WSe 2 ) is drawing increasing attention not only because of its excellent optoelectronic properties but also because of its ambipolar nature. − Recently, WSe 2 -based optoelectronic devices, such as photodiodes, − phototransistors, − and optical memories, , have been demonstrated. Meanwhile, emerging WSe 2 -based devices for artificial retina systems have been proposed, as well …”

Section: Introductionmentioning

confidence: 99%

Self-Powered Bidirectional Photoresponse in High-Detectivity WSe₂ Phototransistor with Asymmetrical van der Waals Stacking for Retinal Neurons Emulation

et al. 2022

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An artificial retina system shows a promising potential to achieve fast response, low power consumption, and high integration density for vision sensing systems. Optoelectronic sensors, which can emulate the neurobiological functionalities of retinal neurons, are crucial in the artificial retina systems. Here, we propose a WSe 2 phototransistor with asymmetrical van der Waals (vdWs) stacking that can be used as an optoelectronic sensor in artificial retina systems. Through the utilization of the gate-tunable self-powered bidirectional photoresponse of this phototransistor, the neurobiological functionalities of both bipolar cells and cone cells, as well as the hierarchical connectivity between these two types of retinal neurons, are successfully mimicked by a single device. This self-powered bidirectional photoresponse is attributed to the asymmetrical vdWs stacking structure, which enables the transition from an n−p to p + −p homojunction in the WSe 2 channel under different polarities of gate bias. Moreover, the detectivity and ON/OFF ratio of this phototransistor reach as high as 1.8 × 10 13 Jones and 5.3 × 10 4 , respectively, and a rise/ fall time <80 μs is achieved, as well, which reveals good photodetection performance. The proof of this device provides a pathway for the future development of neuromorphic vision devices and systems.

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Sensitivity enhancement of two-dimensional WSe₂-based photodetectors by ordered Ag plasmonic nanostructures

Cited by 6 publications

References 33 publications

Polarization Sensitive Photodetectors Based on Two-Dimensional WSe2

Polarization Sensitive Photodetectors Based on Two-Dimensional WSe2

Emerging Schemes for Advancing 2D Material Photoconductive-Type Photodetectors

Self-Powered Bidirectional Photoresponse in High-Detectivity WSe₂ Phototransistor with Asymmetrical van der Waals Stacking for Retinal Neurons Emulation

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Sensitivity enhancement of two-dimensional WSe2-based photodetectors by ordered Ag plasmonic nanostructures

Cited by 6 publications

References 33 publications

Polarization Sensitive Photodetectors Based on Two-Dimensional WSe2

Polarization Sensitive Photodetectors Based on Two-Dimensional WSe2

Emerging Schemes for Advancing 2D Material Photoconductive-Type Photodetectors

Self-Powered Bidirectional Photoresponse in High-Detectivity WSe2 Phototransistor with Asymmetrical van der Waals Stacking for Retinal Neurons Emulation

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Product

Resources

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Sensitivity enhancement of two-dimensional WSe₂-based photodetectors by ordered Ag plasmonic nanostructures

Self-Powered Bidirectional Photoresponse in High-Detectivity WSe₂ Phototransistor with Asymmetrical van der Waals Stacking for Retinal Neurons Emulation