Flexible Vanadium Dioxide Photodetectors for Visible to Longwave Infrared Detection at Room Temperature

Balendhran, Sivacarendran; Taha, Mohammad; Wang, Shifan; Yan, Wei; Higashitarumizu, Naoki; Wen, Dingchen; Azar, Nima Sefidmooye; Bullock, James; Mulvaney, Paul; Javey, Ali; Crozier, Kenneth B.

doi:10.1002/adfm.202301790

Cited by 7 publications

(3 citation statements)

References 47 publications

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“…Other applications considered in this review are a resistive photodetector [ 98 , 99 , 100 , 101 ], piezoelectric strain sensor [ 102 ], and thermal fluid flow sensor [ 108 , 109 ]. While the piezoelectric effect was observed in VO 2 , the application as a strain sensor is only theoretically proposed.…”

Section: Discussionmentioning

confidence: 99%

“…The methods for fabricating thin films are mostly different physical vapor deposition approaches, most notably pulsed laser deposition, DC sputtering, and RF sputtering. Some applications use VO 2 in ink formed by using a VO 2 powder suspended in a liquid (example applications include photodetector, temperature, and strain sensors) [77,78,99]. This approach simplifies the manufacture of VO 2 devices, at least at a laboratory test scale, and does not necessarily seem to yield devices with worse sensitivity values than other methods.…”

Section: Fabrication Methods and Structuresmentioning

confidence: 99%

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Recent Advances of VO2 in Sensors and Actuators

Darwish,

Zhabura,

Pohl

2024

Nanomaterials

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Vanadium dioxide (VO2) stands out for its versatility in numerous applications, thanks to its unique reversible insulator-to-metal phase transition. This transition can be initiated by various stimuli, leading to significant alterations in the material’s characteristics, including its resistivity and optical properties. As the interest in the material is growing year by year, the purpose of this review is to explore the trends and current state of progress on some of the applications proposed for VO2 in the field of sensors and actuators using literature review methods. Some key applications identified are resistive sensors such as strain, temperature, light, gas concentration, and thermal fluid flow sensors for microfluidics and mechanical microactuators. Several critical challenges have been recognized in the field, including the expanded investigation of VO2-based applications across multiple domains, exploring various methods to enhance device performance such as modifying the phase transition temperature, advancing the fabrication techniques for VO2 structures, and developing innovative modelling approaches. Current research in the field shows a variety of different sensors, actuators, and material combinations, leading to different sensor and actuator performance input ranges and output sensitivities.

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Section: Discussionmentioning

confidence: 99%

Section: Fabrication Methods and Structuresmentioning

confidence: 99%

Recent Advances of VO2 in Sensors and Actuators

Darwish,

Zhabura,

Pohl

2024

Nanomaterials

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“…Similar behavior as in Figure 7a has been observed in VO x -based bolometers where a steady increase in TCR was observed up to a certain temperature, beyond which a sharp increase was observed. [42,43]…”

Section: Temperature Coefficient Of Resistancementioning

confidence: 99%

Integrated Bolometric Photodetectors Based on Transparent Conductive Oxides from Near‐ to Mid‐Infrared Wavelengths

Gosciniak

2023

Advanced Photonics Research

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On‐chip photodetectors are essential components in optical communications as they convert light into an electrical signal. Photobolometers are a type of photodetector that functions through a resistance change caused by electronic temperature fluctuations upon light absorption. They are widely used in the broad wavelength range from ultraviolet to mid‐infrared (MIR). In this work, a novel waveguide‐integrated bolometer that operates in a wide wavelength range from near‐infrared to MIR is introduced on the standard material platform with the transparent conductive oxides (TCOs) as the active material. This material platform enables the construction of both modulators and photodetectors using the same material, which is fully complementary metal–oxide–semiconductor compatible and easily integrated with passive on‐chip components. The photobolometers proposed here consist of a thin TCO layer placed inside the rib photonic waveguide to enhance light absorption and then heat the electrons in the TCO. This rise in electron temperature leads to decreasing electron mobility and consequential electrical resistance change. In consequence, a responsivity exceeding 10 A W−1can be attained with a mere few microwatts of optical input power. Calculations suggest that further improvements can be expected with lower doping of the TCO, thus opening new doors in on‐chip photodetectors.

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Electrostatically Induced Black Phosphorus Infrared Photodiodes

Yan,

Wang,

Xing

et al. 2024

Adv Funct Materials

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Homojunctions are key elements in many mainstream electronic devices. However, conventional dopant‐based “pn” homojunctions are not easily achievable in new material families, such as the 2D materials. Several recent 2D material studies have shown that lateral pn homojunctions can instead be electrostatically induced using back gates localized to either the source or drain contacts. Here, a hBN‐encapsulated black phosphorus dual‐gate device containing a lateral pn homojunction, whose orientation can be switched via application of back gate voltages, is demonstrated. Importantly, this study extends the state‐of‐the‐art for this architecture by characterizing the photoresponse under infrared (λ = 2.2 µm) illumination. It is shown that when biased to form a homojunction, the device exhibits the photovoltaic effect, resulting in a specific detectivity of 8.5 × 108 cm Hz1/2 W−1 at 77 K under short‐circuit conditions, and an open circuit photovoltage up to 175 mV at 77 K. Further, it is shown that the device can be operated in photoconductive mode, allowing a high responsivity of 0.55 A W−1. This device is thus highly reconfigurable as it can be switched between photovoltaic and photoconductive modes of operation to prioritize low noise and fast response or high responsivity.

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Flexible Vanadium Dioxide Photodetectors for Visible to Longwave Infrared Detection at Room Temperature

Cited by 7 publications

References 47 publications

Recent Advances of VO2 in Sensors and Actuators

Recent Advances of VO2 in Sensors and Actuators

Integrated Bolometric Photodetectors Based on Transparent Conductive Oxides from Near‐ to Mid‐Infrared Wavelengths

Electrostatically Induced Black Phosphorus Infrared Photodiodes

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