Two-dimensional materials applied for room-temperature thermoelectric photodetectors

Wang, Jiaqi; Xie, Zhemiao; Yeow, John T. W.

doi:10.1088/2053-1591/abc6cc

Cited by 22 publications

(20 citation statements)

References 75 publications

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“…The fundamental photonic effects, device configurations, and working mechanisms along with key performance parameters of 2D materials-based photodetectors are summarized in this section, wherein we have focused on photovoltaic effect ( Xiao et al, 2015 ), photo-thermoelectric effect ( Wang et al, 2020 ), photoconductive effect ( Long et al, 2019 ), photogating effect ( Koppens et al, 2014 ), bolometric effect ( Kasirga, 2020 ), and plasma wave assisted mechanisms ( Rupper et al, 2015 ), along with responsivity, detection, quantum efficiency, phot-response time, and photo-conductive gain.…”

Section: Photodetection Mechanisms and Key Performance Parametersmentioning

confidence: 99%

“…The photo-thermoelectric effect ( Wang et al, 2020 ) is the indirect conversion of light into electrical signals caused by variations in light absorption factors in different regions. The change of electron thermal motion arisen due to this effect in an active region creates a temperature gradient within the device, as shown in Figure 2B ( Qiu and Huang, 2021 ).…”

Section: Photodetection Mechanisms and Key Performance Parametersmentioning

confidence: 99%

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2D Materials for Efficient Photodetection: Overview, Mechanisms, Performance and UV-IR Range Applications

et al. 2022

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Two-dimensional (2D) materials have been widely used in photodetectors owing to their diverse advantages in device fabrication and manipulation, such as integration flexibility, availability of optical operation through an ultrabroad wavelength band, fulfilling of photonic demands at low cost, and applicability in photodetection with high-performance. Recently, transition metal dichalcogenides (TMDCs), black phosphorus (BP), III-V materials, heterostructure materials, and graphene have emerged at the forefront as intriguing basics for optoelectronic applications in the field of photodetection. The versatility of photonic systems composed of these materials enables their wide range of applications, including facilitation of chemical reactions, speeding-up of responses, and ultrasensitive light detection in the ultraviolet (UV), visible, mid-infrared (MIR), and far-infrared (FIR) ranges. This review provides an overview, evaluation, recent advancements as well as a description of the innovations of the past few years for state-of-the-art photodetectors based on two-dimensional materials in the wavelength range from UV to IR, and on the combinations of different two-dimensional crystals with other nanomaterials that are appealing for a variety of photonic applications. The device setup, materials synthesis, operating methods, and performance metrics for currently utilized photodetectors, along with device performance enhancement factors, are summarized.

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Section: Photodetection Mechanisms and Key Performance Parametersmentioning

confidence: 99%

Section: Photodetection Mechanisms and Key Performance Parametersmentioning

confidence: 99%

2D Materials for Efficient Photodetection: Overview, Mechanisms, Performance and UV-IR Range Applications

et al. 2022

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“…1−3 Among various light conversion principles, photothermoelectric (PTE) detectors, converting electromagnetic energy into electrical signals via photothermal and thermoelectric progress, fulfill ultraband photodetection from the THz to the infrared region. 4 In particular, compared to other photodetection detectors, such as bolometric, 5 photovoltaic, 6,7 and pyroelectric 8 detectors, PTE detectors can achieve sensitive photoresponse at room temperature without any external bias support. This effective attribute paves a way toward numerous applications such as nondestructive tests in industries, 9 biomedical drug tracking, 10 security cameras, 11 wearable health monitors, 12 and space exploration.…”

Section: Introductionmentioning

confidence: 99%

Doped Polyaniline/Graphene Composites for Photothermoelectric Detectors

Xie

Wang

Yeow

2022

ACS Appl. Nano Mater.

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The development of photothermoelectric (PTE) detectors has drawn much attention and is a hot research topic because of their superiority of converting broadband terahertz to mid-infrared radiation energy without any bias support in ambient conditions. However, earlier work in PTE detectors is complicated by a sophisticated fabrication process, uncontrollable formation, poor flexibility, and intractable material instability. Herein, we apply doped polyaniline (PANI)/graphene composites on poly(ethylene terephthalate) substrates to propose a new type of PTE detectors. The facile fabrication process, involving tip sonification and magnetic stirring, enhances the dispersion of homogeneously aqueous graphene. Besides the uniformity of the composite, the bias-free photodetector exhibits its highly sensitive responsivity by tuning the graphene concentration, achieving a peak detectivity of 6.8 × 10 7 cm Hz 1/2 W −1 and responsivity of 2.5 V W −1 . In addition, various bending radii (−1.5 to 1.5 cm) and more than 300 multiple bending cycles demonstrate remarkable flexibility of the doped-PANI/graphene composite. We further simulate human interactions by setting fingers 3−5 mm away from detectors and moving fingertips along the perpendicular direction toward the detector in multiple attempts to exhibit a rapid, high-performance photovoltage response of 10 μV. Overall, the striking doped-PANI/graphene composite PTE detectors manifest satisfactory broadband detectivity and provide insights into abundant applications in nondestructive health monitors, future optical detectors, and wearable Internet of Things (IoT) devices.

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“…Thermoelectric detectors can be a good alternative to bolometers, photoconductive antennas, and Golay cells [10,11]. Thin films of graphene, black phosphorus, transition metal dichalcogenides, nitrides, and carbonitrides are already widely studied as photothermoelectric detectors at room temperature [12]. Thermoelectrics can be used for detection from visible to infrared spectrum due to the possibility of precious temperature gradient control at the nanoscale volumes in resonant structures [13].…”

Section: Introductionmentioning

confidence: 99%

FEM Simulation of Frequency-Selective Surface Based on Thermoelectric Bi-Sb Thin Films for THz Detection

et al. 2021

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Terahertz (THz) filters and detectors can find a wide application in such fields as: sensing, imaging, security systems, medicine, wireless connection, and detection of substances. Thermoelectric materials are promising basis for THz detectors’ development due to their sensitivity to the THz radiation, possibility to be heated under the THz radiation and produce voltage due to Seebeck effect. Thermoelectric thin films of Bi-Sb solid solutions are semimetals/semiconductors with the band gap comparable with THz energy and with high thermoelectric conversion efficiency at room temperature. Detecting film surface can be transformed into a periodic frequency selective surface (FSS) that can operate as a frequency filter and increases the absorption of THz radiation. We report for the first time about the simulation of THz detector based on thermoelectric Bi-Sb thin-filmed frequency-selective surface. We show that such structure can be both detector and frequency filter. Moreover, it was shown that FSS design increases not only a heating due to absorption but a temperature gradient in Bi-Sb film by two orders of magnitude in comparison with continuous films. Local temperature gradients can reach the values of the order of 100 K· mm−1. That opens new perspectives for thin-filmed thermoelectric detectors’ efficiency increase. Temperature difference formed due to THz radiation absorption can reach values on the order of 1 degree. Frequency-transient calculations show the power dependence of film temperature on time with characteristic saturation at times around several ms. That points to the perspective of reaching fast response times on such structures.

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Two-dimensional materials applied for room-temperature thermoelectric photodetectors

Cited by 22 publications

References 75 publications

2D Materials for Efficient Photodetection: Overview, Mechanisms, Performance and UV-IR Range Applications

2D Materials for Efficient Photodetection: Overview, Mechanisms, Performance and UV-IR Range Applications

Doped Polyaniline/Graphene Composites for Photothermoelectric Detectors

FEM Simulation of Frequency-Selective Surface Based on Thermoelectric Bi-Sb Thin Films for THz Detection

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