Highly polarization sensitive infrared photodetector based on black phosphorus-on-WSe 2 photogate vertical heterostructure

Ye, Lei; Wang, Peng; Luo, Wenjin; Gong, Fan; Liao, Lei; Liu, Tiande; Tong, Lei; Zang, Jianfeng; Xu, Jianbin; Hu, Weida

doi:10.1016/j.nanoen.2017.05.004

Cited by 270 publications

(201 citation statements)

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“…Moreover, 2DMCs/BP hybrid heterostructures toward IR photodetection have been gradually reported, in which obvious polarization‐sensitive photoresponse has been demonstrated due to the anisotropic light absorption of BP. Ye et al have fabricated a hybrid heterostructure photodetector, in which WSe 2 acts as the conductive channel and the BP serves as the photogate on the top of WSe 2 . This device exhibits good responsivity of ≈5 × 10 −1 A W −1 , as well as high specific detectivity of ≈10 10 Jones under 1550 nm illumination.…”

Section: Hybrid Heterostructures Based On 2d Metal Chalcogenides For mentioning

confidence: 99%

“…This device exhibits good responsivity of ≈5 × 10 −1 A W −1 , as well as high specific detectivity of ≈10 10 Jones under 1550 nm illumination. In addition, the detector reveals a responsivity of 40 mA W −1 to IR polarization with the incident light along the horizontal axis due to the strong intrinsic linear dichroism of BP …”

Section: Hybrid Heterostructures Based On 2d Metal Chalcogenides For mentioning

confidence: 99%

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2D Metal Chalcogenides for IR Photodetection

Wang

Zhang

Gao

et al. 2019

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Infrared (IR) photodetectors are finding diverse applications in imaging, information communication, military, etc. 2D metal chalcogenides (2DMCs) have attracted increasing interest in view of their unique structures and extraordinary physical properties. They have demonstrated outstanding IR detection performance including high responsivity and detectivity, high on/off ratio, fast response rate, stable room temperature operability, and good mechanical flexibility, which has opened up a new prospect in next‐generation IR photodetectors. This Review presents a comprehensive summary of recent progress in advanced IR photodetectors based on 2DMCs. The rationale of the photodetectors containing photocurrent generation mechanisms and performance parameters are briefly introduced. The device performances of 2DMCs‐based IR photodetectors are also systematically summarized, and some representative achievements are highlighted as well. Finally, conclusions and outlooks are delivered as a guideline for this thriving field.

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Section: Hybrid Heterostructures Based On 2d Metal Chalcogenides For mentioning

confidence: 99%

Section: Hybrid Heterostructures Based On 2d Metal Chalcogenides For mentioning

confidence: 99%

2D Metal Chalcogenides for IR Photodetection

Wang

Zhang

Gao

et al. 2019

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141

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“…These characteristics limit the deployment of UV detection systems in aerospace and high‐end warning platforms. With the advancements in materials science, newly developed low‐dimensional materials – possess ultrathin thickness, and have shown excellent photoelectric conversion characteristics and much improved compatibility with existing microelectronics technology in comparison with the traditional thin‐film semiconductors. UV photodetectors based on low‐dimensional ZnO have been widely investigated to explore their potential applications due to high specific surface area and excellent optoelectronic properties, such as high performance at room‐temperature, low power consumption, and low cost.…”

Section: Introductionmentioning

confidence: 99%

Ferroelectric Localized Field–Enhanced ZnO Nanosheet Ultraviolet Photodetector with High Sensitivity and Low Dark Current

Wang

et al. 2018

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Zinc oxide (ZnO) nanosheets have demonstrated outstanding electrical and optical properties, which are well suited for ultraviolet (UV) photodetectors. However, they have a high density of intrinsically unfilled traps, and it is difficult to achieve p-type doping, leading to the poor performance for low light level switching ratio and a high dark current that limit practical applications in UV photodetection. Here, UV photodetectors based on ZnO nanosheets are demonstrated, whose performance is significantly improved by using a ferroelectric localized field. Specifically, the photodetectors have achieved a responsivity of up to 3.8 × 10 A W , a detectivity of 4.4 × 10 Jones, and a photocurrent gain up to 1.24 × 10 . These device figures of merit are far beyond those of traditional ZnO ultraviolet photodetectors. In addition, the devices' initial dark current can be easily restored after continuous photocurrent measurement by using a positive gate voltage pulse. This study establishes a new approach to produce high-sensitivity and low-dark-current ultraviolet photodetectors and presents a crucial step for further practical applications.

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“…The mainstream of this field is dominated by inorganic 2D systems, such as metallic graphene, black phosphorus, and transition metal dichalcogenides (e.g., MoS 2, ReS 2 , and GeSe 2 ) . However, their device assembling often suffers from the complicated, high‐cost and energy‐intensive integration; it is particularly difficult to obtain bulk high‐quality crystals . All these unfavorable issues stimulate the urgent demand for exploring new linear dichroism systems as the feasible alternatives or supplements to the inorganic counterparts.…”

mentioning

confidence: 99%

Intrinsic Strong Linear Dichroism of Multilayered 2D Hybrid Perovskite Crystals toward Highly Polarized‐Sensitive Photodetection

Liu

et al. 2019

Advanced Optical Materials

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to the polarized-light and thus enable a highly efficient photodetection. [13][14][15][16][17][18] The mainstream of this field is dominated by inorganic 2D systems, such as metallic graphene, black phosphorus, and transition metal dichalcogenides (e.g., MoS 2, ReS 2 , and GeSe 2 ). [5,6,[19][20][21][22][23] However, their device assembling often suffers from the complicated, high-cost and energy-intensive integration; it is particularly difficult to obtain bulk high-quality crystals. [24][25][26][27] All these unfavorable issues stimulate the urgent demand for exploring new linear dichroism systems as the feasible alternatives or supplements to the inorganic counterparts.Organic-inorganic 2D hybrid perovskites, as a subclass of 3D cubic prototype, have been explored for multiple applications, benefiting from their unique physical merits including structural flexibility, superior stability, and quantum-confined effects, etc. [28][29][30][31][32][33][34][35][36] From the structural perspective, organic components and inorganic frameworks feature an alternative arrangement, which resembles the quantum-confined architecture and therefore manifests the strongly anisotropic characteristics. [13,14] Particularly, this configuration anisotropy closely relates to the electronic structure and dielectric properties that exert a great influence on their optical absorption. The absorption coefficients along different crystallographic axes can be achieved from imaginary part and real part of the dielectric functions. That is, the real and imaginary parts of the complex refractive index are highly dependent on crystalline directions, thus corresponding to optical anisotropy of 2D hybrid perovskites (i.e., linear dichroism). [8] Definitely, such intrinsic linear dichroism of 2D hybrid perovskites affords infinite promises for polarized-light detections. For instance, (PEA) 2 PbI 4 exhibits linear dichroism deriving from the absorption disparity under polarized light along three crystallographic axis directions. [8] More recently, high-performance polarized-light detectors were constructed using 2D hybrid perovskite of (BA) 2 (MA)Pb 2 Br 7 , [18] based on the strong anisotropy of crystal architecture and optical absorption. In this context, it is proposed that intrinsic linear dichroism of 2D hybrid perovskites provides a great opportunity to achieve new candidates for polarized-light detection. Linear dichroism of 2D materials is brought into practical operation of polarized light detection; currently, organic-inorganic 2D hybrid perovskites with the linear dichroic nature offers immense potentials within this portfolio.Here, a newly tailored 2D hybrid perovskite, (iBA) 2 (MA)Pb 2 I 7 (1, where MA + is methylammonium and iBA + is n-isobutylammonium) is investigated, adopting a highly anisotropic bilayered perovskite motif that results in strong crystallographic-dependence of linear dichroism. Both the absorption spectra (300-650 nm) and polarized-sensitive activities of 1 exhibit the distinctive anisotropic characteristics. Con...

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Highly polarization sensitive infrared photodetector based on black phosphorus-on-WSe 2 photogate vertical heterostructure

Cited by 270 publications

References 48 publications

2D Metal Chalcogenides for IR Photodetection

2D Metal Chalcogenides for IR Photodetection

Ferroelectric Localized Field–Enhanced ZnO Nanosheet Ultraviolet Photodetector with High Sensitivity and Low Dark Current

Intrinsic Strong Linear Dichroism of Multilayered 2D Hybrid Perovskite Crystals toward Highly Polarized‐Sensitive Photodetection

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