Hybrid Heterojunctions of Solution-Processed Semiconducting 2D Transition Metal Dichalcogenides

Yu, Xiaoyun; Rahmanudin, Aiman; Jeanbourquin, Xavier A.; Τσόκκου, Δήμητρα; Guijarro, Néstor; Banerji, Natalie; Sivula, Kevin

doi:10.1021/acsenergylett.6b00707

Cited by 33 publications

(42 citation statements)

References 36 publications

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“…In Jung's work, [6] single-layer WSe 2 nanosheets were grown by using tungsten hexacarbonyl and diphenyl diselenide as precursors in the presence of oleic acid while multilayer nanosheets were produced in the presence of oleylalcohol or oleylamine. [78] Additionally, a perylene-diimide derivative was hybridized on MoS 2 nanosheets to prepare large-area heterojunction films, exhibiting a sixfold improvement in photocurrent through the transfer of photogenerated holes between MoS 2 and perylene-diimide. As there is a weaker binding affinity of oleic acid on WSe 2 edges, and thus WSe 2 nanosheets may extend their growth in plane to form larger single layer nanosheets.…”

Section: Surface Modification With Organic Moleculesmentioning

confidence: 99%

Functionalized Hybridization of 2D Nanomaterials

Guan

Han

2019

Advanced Science

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The discovery of graphene and subsequent verification of its unique properties have aroused great research interest to exploit diversified graphene‐analogous 2D nanomaterials with fascinating physicochemical properties. Through either physical or chemical doping, linkage, adsorption, and hybridization with other functional species into or onto them, more novel/improved properties are readily created to extend/expand their functionalities and further achieve great performance. Here, various functionalized hybridizations by using different types of 2D nanomaterials are overviewed systematically with emphasis on their interaction formats (e.g., in‐plane or inter plane), synergistic properties, and enhanced applications. As the most intensely investigated 2D materials in the post‐graphene era, transition metal dichalcogenide nanosheets are comprehensively investigated through their element doping, physical/chemical functionalization, and nanohybridization. Meanwhile, representative hybrids with more types of nanosheets are also presented to understand their unique surface structures and address the special requirements for better applications. More excitingly, the van der Waals heterostructures of diverse 2D materials are specifically summarized to add more functionality or flexibility into 2D material systems. Finally, the current research status and faced challenges are discussed properly and several perspectives are elaborately given to accelerate the rational fabrication of varied and talented 2D hybrids.

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Section: Surface Modification With Organic Moleculesmentioning

confidence: 99%

Functionalized Hybridization of 2D Nanomaterials

Guan

Han

2019

Advanced Science

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“…By comparing HOMO/LUMO levels of ZnPP molecules with the band energies of group‐6 TMDs, two charge transfer paths have been proposed, i.e., the transfer of photoexcited electrons from ZnPP to disulfides and the transfer of photoexcited holes from ZnPP to diselenides, respectively. Similarly, different photocurrent modulations were observed in MoS 2 and MoSe 2 flakes after functionalization with perylene diimide derivative . Therefore, the combination of TMDs materials with light‐sensitive molecules will contribute to distinct photoresponse via the proper design of the band alignment.…”

Section: Tunable Optical Response Of 2d Materials By Molecular Functimentioning

confidence: 99%

“…Therefore, they play a fundamental role in the functionalization of 2D crystals, especially those which do not possess π‐conjugated structure such as TMDs (e.g., MoS 2 , MoSe 2 , WS 2 , WSe 2 ) and black phosphorus. In particular, van der Waals interactions have been employed to assembly diazirines, spiropyrans, dihydroazulenes, azobenzenes, diarylethenes, perylene diimides, porphyrins, and phthalocyanines, especially metal‐derivatives in the last two cases, onto the surface of 2D materials in order to obtain photosensitive hybrid systems characterized by enhanced properties and performances. Finally, the noncovalent functionalization is a smart, poorly invasive and efficient approach to combine the remarkable properties of 2D materials with the fascinating and versatile photochemistry provided by light‐responsive molecular systems.…”

Section: Functionalization Of 2d Layers With Molecular Systemsmentioning

confidence: 99%

Functionalization of 2D Materials with Photosensitive Molecules: From Light‐Responsive Hybrid Systems to Multifunctional Devices

Zhao

Ippolito

Samorı́

2019

Advanced Optical Materials

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2D materials possess exceptional physical and chemical properties that render them appealing components for numerous potential applications in (opto)electronics, energy storage, sensing, and biomedicine. However, such unique properties are hardly tunable or modifiable. The functionalization of 2D crystals with molecules constitutes a powerful strategy to adjust and modulate their properties, by also imparting them new functions. In this framework, the combination of 2D materials with photosensitive molecules is a viable route for harnessing their light‐responsive nature. The latter takes full advantage of the extremely high sensitivity of 2D materials to subtle changes in the local environment and the capacity of photosensitive molecules to modify their intrinsic properties when exposed to electromagnetic fields. The hybrid molecule–2D materials can preserve the unique optical and electrical properties of 2D layers and can exhibit additional light‐tunable features. In this Progress Report, the protocols that can be pursued for the 2D material functionalization and switching mechanisms in photosensitive systems are reviewed, followed by an in‐depth discussion on their tunable optical properties and their exploitation when integrated in novel photoswitchable electronic devices. The opportunities and associated challenges to be tackled for the development of unprecedented and high‐performance light‐responsive devices are discussed.

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“…In contrast to phototransistors, the working mechanism of photoconductors is that light‐induced photocarriers contribute to the overall source–drain current without gate voltage modulations . Photoconductors offer the following advantages: a figure of merit identical to that of a simple two‐terminal device structure, ease of large‐scale fabrication, and ease of application to flexible substrates.…”

Section: Electronic and Optoelectronic Applicationsmentioning

confidence: 99%

2D–Organic Hybrid Heterostructures for Optoelectronic Applications

et al. 2019

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The unique properties of hybrid heterostructures have motivated the integration of two or more different types of nanomaterials into a single optoelectronic device structure. Despite the promising features of organic semiconductors, such as their acceptable optoelectronic properties, availability of low-cost processes for their fabrication, and flexibility, further optimization of both material properties and device performances remains to be achieved. With the emergence of atomically thin 2D materials, they have been integrated with conventional organic semiconductors to form multidimensional heterostructures that overcome the present limitations and provide further opportunities in the field of optoelectronics. Herein, a comprehensive review of emerging 2D-organic heterostructures-from their synthesis and fabrication to their state-of-the-art optoelectronic applications-is presented. Future challenges and opportunities associated with these heterostructures are highlighted.solution-processed on any substrate inexpensively and at relatively low temperatures, which is highly advantageous for their scale-up from fundamental studies to industrial-level production. [6][7][8][9][10] Initial examples of developed organic semiconductors include field-effect transistors (FETs), [4,5,[11][12][13][14][15] photodetectors (PDs), [5,16,17] photovoltaics (PVs), [5,16,18,19] light-emitting diodes (LEDs), [5,16,20] and so on. In spite of the demonstration of promising prototypes of organic semiconductors, their development and optimization for highperformance device applications remain a challenge. In particular, it is becoming increasingly difficult to impart suitable properties to individual materials and realize appropriate physical dimensions in order to satisfy increasing demands of multifunctionality for fundamental studies, device designs, and performance optimization. [21,22] Consequently, such challenges and opportunities can be addressed by performing multidimensional integration or hybridization of organic semiconductors with various types of materials having potentially novel functionalities and unique properties.2D van der Waals (vdW) materials are the most obvious candidate for such hybridization with organic semiconductors. [22,23] Since the discovery of graphene, which opened up new avenues ranging from fundamental studies to real-world applications, [24][25][26][27] several other groups of 2D vdW materials have also been discovered, such as hexagonal boron nitride (h-BN), [28,29] transition metal dichalcogenides (TMDCs), [23,[30][31][32][33][34] black phosphorus (BP), [35][36][37][38][39][40] borophene, [41][42][43] silicene, [43] and germanene. [43] The 2D structure has been demonstrated to possess several exceptional electrical, optical, mechanical, and thermal properties vis-à-vis its corresponding bulk counterpart. [22,25,27] Most importantly, from the viewpoint of hybridization with organic semiconductors, the atomically flat and dangling-bond-free surface of 2D vdW materials not only provides an ideal int...

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Hybrid Heterojunctions of Solution-Processed Semiconducting 2D Transition Metal Dichalcogenides

Cited by 33 publications

References 36 publications

Functionalized Hybridization of 2D Nanomaterials

Functionalized Hybridization of 2D Nanomaterials

Functionalization of 2D Materials with Photosensitive Molecules: From Light‐Responsive Hybrid Systems to Multifunctional Devices

2D–Organic Hybrid Heterostructures for Optoelectronic Applications

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