The Relationship between Structural and Electrical Characteristics in Perylenecarboxydiimide‐Based Nanoarchitectures

Musumeci, Chiara; Salzmann, Ingo; Bonacchi, Sara; Röthel, Christian; Duhm, Steffen; Koch, Norbert; Samorı́, Paolo

doi:10.1002/adfm.201403773

Cited by 25 publications

(34 citation statements)

References 64 publications

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“…The field‐effect transistors exhibit a reasonable electrical performance, demonstrating that the LB method is an ideal approach to fabricate 2D n‐type molecular crystals. Furthermore, this paves the way toward the applications of 2D crystals in downscaled organic electronic devices …”

Section: Solution‐based Techniques For Preparing 2dmcsmentioning

confidence: 95%

Solution‐Processed 2D Molecular Crystals: Fabrication Techniques, Transistor Applications, and Physics

Qian

Jiang

et al. 2018

Adv Materials Technologies

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the complex microstructures and undesir able qualities of conventional organic bulk thin films can largely lead to severe performance bottlenecks in functional OFETs [23,24] and serve as essential chal lenges in unveiling the intrinsic electrical properties. [25] Therefore, a new organic material is profoundly required to satisfy the anticipated demand for fundamental studies and to sustain the revolutionary advancement in organic electronics.As an emerging electronic material, 2D molecular crystals (2DMCs) have attracted particular attention since their discovery. [26,27] The material structure of 2DMC features a monolayer (ML) or few layers of molecules that are assembled via weak van der Waals (vDW) bonding along two dimensions. 2DMCs have also dem onstrated unique characteristics of thick ness uniformity over a large scale, perfect lateral continuity with an atomically flat surface, and longrange molecular ordering. Particularly, when the available conforma tions of crystalline molecular semiconductors are restricted under a special constraint geometry, the interlayer screening that commonly exists in the 3D bulk organic semiconducting crystals can be effectively eliminated. [27,28] Thus, 2DMCs are extremely fascinating for the direct exploration of the charge accumulation and transport behaviors regarding the properties of the semiconductor/insulator interface, disorder effects, and polaronic relaxation. Especially, in 2DMCbased FETs, the inter facial interactions on the molecular crystals can be well con fined at 2D limit, exhibiting different influences from layer to layer. Thus, the microscopic behaviors of charge carriers can be much effectively modulated. Therefore, 2DMCs possess unique optoelectronic properties that cannot be achieved in conven tional bulk molecular crystals. [29][30][31] Besides, utilizing their ultrathin structural features and superior interface qualities can significantly contribute to the enhanced performance of 2DMC based functional FETs. These unique merits, combined with intrinsic properties, such as lightweight construction, material versatility, and chemical/environment stability, explicitly enable these 2D crystals fascinating prospects for realistic applications in advanced electronic technologies. [15,[32][33][34][35] Obtaining molecular crystals with 2D morphology is an essential prerequisite for scientific and technological studies. Pioneering efforts have been devoted to vaporgrown 2DMCs. [36][37][38][39][40][41][42] However, the expensive preparation cost and rigorous growth conditions have rendered these methods Based on intensive research, organic field-effect transistors (OFETs) will likely remain at the zenith in information science for many years due to their numerous potential applications in portable and smart electronic devices. Elucidating the intrinsic charge-transport behavior and realizing functional OFETs with superior device characteristics have been the cornerstones for the sustainable advancement in organic electronics. The emerging 2D molecular crystal...

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Section: Solution‐based Techniques For Preparing 2dmcsmentioning

confidence: 95%

Solution‐Processed 2D Molecular Crystals: Fabrication Techniques, Transistor Applications, and Physics

Qian

Jiang

et al. 2018

Adv Materials Technologies

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“…The identical character of the substrate temperature for growth of OPV and organic LED and FET from small-molecule OSC was demonstrated by growth, structure, and anisotropic optical properties of difluoroanthradithiophene thin films [226]. The prototypical n-type OSC PDIF-CN2 was assembled into well-ordered nanoarchitectures by LB technique and a multiscale analysis of the correlation between their structural and electrical properties was performed using XRR and GID [227]. LB-deposited monolayers of PDIF-CN2 are arranged in upright standing molecular packing on different substrates.…”

Section: Polymer Photovoltaicsmentioning

confidence: 99%

Synchrotron Scattering Methods for Nanomaterials and Soft Matter Research

Narayanan

Konovalov

2020

Materials

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This article aims to provide an overview of broad range of applications of synchrotron scattering methods in the investigation of nanoscale materials. These scattering techniques allow the elucidation of the structure and dynamics of nanomaterials from sub-nm to micron size scales and down to sub-millisecond time ranges both in bulk and at interfaces. A major advantage of scattering methods is that they provide the ensemble averaged information under in situ and operando conditions. As a result, they are complementary to various imaging techniques which reveal more local information. Scattering methods are particularly suitable for probing buried structures that are difficult to image. Although, many qualitative features can be directly extracted from scattering data, derivation of detailed structural and dynamical information requires quantitative modeling. The fourth-generation synchrotron sources open new possibilities for investigating these complex systems by exploiting the enhanced brightness and coherence properties of X-rays.

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“…The hole mobility of the monolayer FET can reach 0.014 cm 2 V −1 s −1 with an average µ h of 0.008 cm 2 V −1 s −1 , which is among the highest charge mobility reported for FETs with ultrathin films prepared with Langmuir technique. [29][30][31][32][33][34][35] Moreover, the monolayer FET exhibits relatively high I on/off (10 4 -10 6 ). µ h increased to 0.015 and 0.02 cm 2 V −1 s −1 for FETs with bilayer and threelayer ultrathin films, respectively.…”

Section: Thin Film Field-effect Transistorsmentioning

confidence: 99%

“…In fact, Langmuir technique was successfully utilized to transfer monolayer thin films of organic and polymeric semiconductors onto the substrates to fabricate FETs. [29][30][31][32][33][34][35] For instance, Yli-Lahti and co-workers first reported FETs with Langmuir-Blodgett (LB) films of poly(3-hexylthicphene)/ arachidic acid, but the resulting FETs exhibited rather low charge mobilities. [34] This is probably due to the fact that the LB films contain arachidic acid which is required for the formation of the polymer LB films at air-water interface.…”

mentioning

confidence: 99%

Diketopyrrolopyrrole‐Based Semiconducting Polymer with Both Hydrophobic Alkyl and Hydrophilic Tetraethylene Glycol Chains for Monolayer Transistor and Sensing Application

Yang

Zhang

Chen

et al. 2017

Adv Elect Materials

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studies also suggest that the first few layers of organic/polymeric semiconductors play key roles in determining the performances of FETs. [10][11][12][13][14][15] Moreover, downscaling the film thickness to a single molecular layer is of technological interest for the realization of bottomup electronic devices. [16][17][18] In particular, monolayer organic FETs (OFETs) are beneficial for sensing applications as the binding of the respective analytes with the semiconducting monolayer is expected to affect the charge transporting. [19][20][21][22][23] Consequently, such sensors with monolayer FETs can show high sensitivity and fast response.Various approaches have been explored to fabricate FETs with ultrathin semiconducting films. These include unconventional spin-coating and formation of self-assembly monolayer on surface. [24][25][26][27][28] Langmuir deposition method is known to enable the realization of monolayers at the air/liquid interface with precision control over the molecule lateral packing density. In fact, Langmuir technique was successfully utilized to transfer monolayer thin films of organic and polymeric semiconductors onto the substrates to fabricate FETs. [29][30][31][32][33][34][35] For instance, Yli-Lahti and co-workers first reported FETs with Langmuir-Blodgett (LB) films of poly(3-hexylthicphene)/ arachidic acid, but the resulting FETs exhibited rather low charge mobilities. [34] This is probably due to the fact that the LB films contain arachidic acid which is required for the formation of the polymer LB films at air-water interface. Facchetti and Pignataro and co-workers prepared n-type monolayer FET with naphthalene diimide based polymer (P (NDI2OD-T2)) by using Langmuir-Schaefer method. [35] These conjugated polymers are basically hydrophobic, but it is known that amphiphilic molecules with both hydrophobic and hydrophilic moieties can form more ordered monolayers at the air-water interface. [36][37][38] Leclerc and co-workers studied the formation of LB monolayers at air-water interface and the transfer of the monolayers onto the substrate for the conjugated polymer with both alkyl and oligo(ethylene glycol) side chains, but the semiconducting properties of the monolayers were not addressed. [38] Functional field-effect transistors (FETs) have received increasing attention in recent years. Herein, it is demonstrated that the incorporation of hydrophilic tetraethylene glycol (TEEG) chains into the diketopyrrolopyrrole (DPP)-based semiconducting polymer (PDPP3T1) can facilitate the formation of polymeric monolayer at the air-water interface, and the resulting field-effect transistors (FETs) show sensitive and selective response toward alcohol vapor. By using the Langmuir-Schaefer method, monolayer and ultrathin films from bilayer to five-layer can be successfully prepared. Interestingly, nanopores with sizes of 50-100 nm are formed within the monolayer film, as observed by using atomic force microscopy. The monolayer FET exhibits relatively high hole mobilities up to 0.014 cm 2 V −1 s −...

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The Relationship between Structural and Electrical Characteristics in Perylenecarboxydiimide‐Based Nanoarchitectures

Cited by 25 publications

References 64 publications

Solution‐Processed 2D Molecular Crystals: Fabrication Techniques, Transistor Applications, and Physics

Solution‐Processed 2D Molecular Crystals: Fabrication Techniques, Transistor Applications, and Physics

Synchrotron Scattering Methods for Nanomaterials and Soft Matter Research

Diketopyrrolopyrrole‐Based Semiconducting Polymer with Both Hydrophobic Alkyl and Hydrophilic Tetraethylene Glycol Chains for Monolayer Transistor and Sensing Application

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