Enhancement of photodetection characteristics of MoS<sub>2</sub>field effect transistors using surface treatment with copper phthalocyanine

Pak, Jinsu; Jang, Jingon; Cho, Kyungjune; Kim, Tae‐Young; Kim, Jae‐Keun; Song, Young-Jae; Hong, Woong-Ki; Min, Mi‐Sook; Lee, Hyoyoung; Lee, Takhee

doi:10.1039/c5nr04836b

Cited by 104 publications

(98 citation statements)

References 43 publications

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“…Similarly, Pak et al reported hybrid photodetectors based on MoS 2 treated with copper phthalocyanine (CuPc). The performance of the devices exhibits a dependence on the CuPc layer thickness, where devices with a relatively thinner CuPc layer present a better photodetection performance . In addition, photodetectors with an organic‐perovskite/2D‐material heterostructure have also been extensively investigated recently .…”

Section: Strategies For Enhancing the Performance Of Photodetectorsmentioning

confidence: 99%

Toward High‐Performance Photodetectors Based on 2D Materials: Strategy on Methods

et al. 2018

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Graphene and graphene‐like 2D layered materials such as black phosphorus, transition‐metal dichalcogenides, oxides, chalcogenides, and so forth have attracted tremendous attention due to their unique crystal structures, mechanical, and physical properties, as well as their variable bandgaps that range from 0 to 6 eV, which have offered their utilization in versatile devices. Using these materials as the active channel, many novel electrical and optoelectronic devices have been reported. Among the various important devices applications, photodetectors based on 2D materials have been extensively investigated with varied performance due to the different species and detection mechanisms. Here, the methods to improve the performance of 2D‐material‐based photodetectors are reviewed. There are five kinds of strategies regarding methods, including surface plasmon enhancement, charge‐transfer assistance, optical‐waveguide integration, graphene sandwiched structures, and heterostructures directly grown by CVD, which are developed and widely reported in recent years. For each method, the device design, performance, and mechanism are introduced and discussed systematically. Finally, a summary is provided to afford the principle to further enhance the performance of photodetectors based on 2D materials, with a perspective for their practical applications in the future.

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Section: Strategies For Enhancing the Performance Of Photodetectorsmentioning

confidence: 99%

Toward High‐Performance Photodetectors Based on 2D Materials: Strategy on Methods

et al. 2018

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“…In situ LEED patterns illustrate that CuPc molecules assemble into large domains at a thickness of 4.8 nm with the molecular plane (quasi-)parallel to the MoS 2 (0001) substrate [51]. Thus, MoS 2 may have different effect on CuPc growth compared with G. Furthermore, photodetectors based on the vdW heterostructure of 2 nm-thick p-type CuPc/5L n-type MoS 2 presents the highest performance with a photoresponsivity of~1.98 A/W, a detectivity of~6.11 × 10 10 Jones, and an external quantum efficiency of~12.57%, due to the transfer of photo-generated charge carrier form CuPc to MoS 2 and the CuPc layer thickness-dependent interlayer recombination processes across the CuPc/MoS 2 interface [52]. Raman spectroscopy is an effective and non-destructive method at ambient conditions to determine surface characterization.…”

Section: Cupc On Layered Substratesmentioning

confidence: 99%

Van Der Waals Heterostructures between Small Organic Molecules and Layered Substrates

Huang

Wang

et al. 2016

Crystals

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Two dimensional atomic crystals, like grapheme (G) and molybdenum disulfide (MoS 2 ), exhibit great interest in electronic and optoelectronic applications. The excellent physical properties, such as transparency, semiconductivity, and flexibility, make them compatible with current organic electronics. Here, we review recent progress in the understanding of the interfaces of van der Waals (vdW) heterostructures between small organic molecules (pentacene, copper phthalocyanine (CuPc), perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA), and dioctylbenzothienobenzothiophene (C 8 -BTBT)) and layered substrates (G, MoS 2 and hexagonal boron nitride (h-BN)). The influences of the underlying layered substrates on the molecular arrangement, electronic and vibrational properties will be addressed.

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“…The practical application of MoS 2 ‐based photodetectors is also hindered by severely limited photoresponse and detecting capability, slow response rate, etc. As a result, many efforts have been made to optimize the performance of atomic‐layer MoS 2 ‐based optoelectronics …”

Section: Introductionmentioning

confidence: 99%

Strategies for Air‐Stable and Tunable Monolayer MoS₂‐Based Hybrid Photodetectors with High Performance by Regulating the Fully Inorganic Trihalide Perovskite Nanocrystals

Zhang

Shen

et al. 2019

Advanced Optical Materials

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environmentalmonitoring, infrared imaging, and optical communication. [1,2] Semiconductor nanomaterials and hybrid films (HFs) have attracted much attention for their potential applications in novel photodetectors. [3] In the family of graphene-like 2D materials used in novel optoelectronics, layered transition metal dichalcogenides (TMDs) have a broad application prospect [4][5][6] due to their unique physical features and optoelectronic properties. [7] As a representative material of TMDs, MoS 2 possesses several advantages, including a direct bandgap of ≈1.8 eV, high carrier mobility, and favorable chemical stability, [8] which are especially suitable for sensing light. However, the atomically thin nature of 2D MoS 2 crystals results in an extremely inefficient light-trapping ability, [9] which is a fatal flaw for photodetector devices. The practical application of MoS 2 -based photodetectors is also hindered by severely limited photoresponse and detecting capability, slow response rate, [10] etc. As a result, many efforts have been made to optimize the performance of atomic-layer MoS 2 -based optoelectronics. [10][11][12][13][14][15][16][17][18] Many studies have shown that the use of hybrid photodetectors (HPs) can mitigate the disadvantages of atomically thin MoS 2 crystals. Under the synergistic effect of multimaterials, hybrid MoS 2 -based devices show improved response rates and responsivities. [10][11][12][13][14][15][16][17][18] For example, the photoresponse rate of a MoS 2 -based device increased by almost three orders of magnitude by constructing the heterojunctions with GaSe flakes, [10] and a greatly increased responsivity (10 6 A W −1 ) was achieved in a TiO 2 -encapsulated MoS 2 transistor-modified by HgTe quantum dots. [18] Therefore, a heterojunction structure improves the performance of MoS 2 -based photodetectors, and the successful integration of dissimilar materials may pave the way toward successful high-performance hybrid optoelectronic devices.Currently, lead halide perovskite materials have been widely used in optoelectronic applications, especially solar cells and lightemitting diodes (LEDs), owing to their attractive optoelectronic characteristics, such as high optical absorbance, long diffusion length of charge carriers, and high carrier mobility. [19][20][21] Perovskite materials with different dimensions have been integrated into optoelectronic devices to improve the performance. [22] The past several years have seen the rapid development of fully inorganic trihalide perovskite nanocrystals (PNCs) in the field of hybrid optoelectronic devices due to their outstanding photophysical properties and environmental stability. In this study, novel and easily implementable strategies are proposed to regulate the photoresponse performance of monolayer MoS 2 /PNC hybrid photodetectors (HPs) without the photogating effect. The optoelectronic properties of these HPs are tuned by regulating the characteristic factors of colloidal PNCs (solution concentration and surface ligand content), ...

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Enhancement of photodetection characteristics of MoS₂field effect transistors using surface treatment with copper phthalocyanine

Cited by 104 publications

References 43 publications

Toward High‐Performance Photodetectors Based on 2D Materials: Strategy on Methods

Toward High‐Performance Photodetectors Based on 2D Materials: Strategy on Methods

Van Der Waals Heterostructures between Small Organic Molecules and Layered Substrates

Strategies for Air‐Stable and Tunable Monolayer MoS₂‐Based Hybrid Photodetectors with High Performance by Regulating the Fully Inorganic Trihalide Perovskite Nanocrystals

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Enhancement of photodetection characteristics of MoS2field effect transistors using surface treatment with copper phthalocyanine

Cited by 104 publications

References 43 publications

Toward High‐Performance Photodetectors Based on 2D Materials: Strategy on Methods

Toward High‐Performance Photodetectors Based on 2D Materials: Strategy on Methods

Van Der Waals Heterostructures between Small Organic Molecules and Layered Substrates

Strategies for Air‐Stable and Tunable Monolayer MoS2‐Based Hybrid Photodetectors with High Performance by Regulating the Fully Inorganic Trihalide Perovskite Nanocrystals

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Enhancement of photodetection characteristics of MoS₂field effect transistors using surface treatment with copper phthalocyanine

Strategies for Air‐Stable and Tunable Monolayer MoS₂‐Based Hybrid Photodetectors with High Performance by Regulating the Fully Inorganic Trihalide Perovskite Nanocrystals