High-resolution direct-writing of metallic electrodes on flexible substrates for high performance organic field effect transistors

Bucella, Sadir Gabriele; Nava, Giorgio; Vishunubhatla, Krishna Chaitanya; Caironi, Mario

doi:10.1016/j.orgel.2013.05.002

Cited by 45 publications

(41 citation statements)

References 68 publications

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“…This paradigm change is non-trivial, due to the close and subtle relation between deposition protocol, active layer microstructure and fi nal device performance. [ 2 ] Drop-on-demand (DOD) inkjet printing [ 3 ] is a digital, additive and very fl exible printing technique which could enable the cost-effective fabrication of different devices into large-area electronic systems and that has been adopted in the past to demonstrate high-resolution electrodes, [ 4 ] high-performance fi eld-effect transistors and circuits, [5][6][7][8][9][10][11][12][13][14][15][16] memory devices, [ 17 ] sensors, [18][19][20][21][22] and polymer solar cells. [ 23,24 ] Here we make use of DOD inkjet printing, [ 25 ] that allows the defi nition of structures with a lateral resolution down to 10 μ m (depending on the nozzle size, the substrate surface energy and the ink surface tension), to develop organic-based photodetectors with a completely additive approach, where both the electrodes and the photoactive layer are printed.…”

Section: Fully Inkjet Printed Organic Photodetectors With High Quantumentioning

confidence: 99%

Fully Inkjet‐Printed Organic Photodetectors with High Quantum Yield

et al. 2013

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Section: Fully Inkjet Printed Organic Photodetectors With High Quantumentioning

confidence: 99%

Fully Inkjet‐Printed Organic Photodetectors with High Quantum Yield

et al. 2013

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“…[1][2][3][4][5][6][7] Such progress coupled with the high compatibility of solution-processable organic semiconductors with plastic or metal foil substrates makes them ideal candidates for cost-effective, mechanically flexible electronic devices for various applications, such as printed radio frequency identification tags for item-level tagging, drivers for flexible displays, wearable electronics, distributed sensors, and integrated, nonvolatile memory devices. [8][9][10][11][12][13][14][15][16][17][18][19][20] [21][22][23][24][25] Such remarkable p-channel mobilities, obtained in devices with fairly promising shelf-life and operational stabilities, have been demonstrated with conjugated polymers based on new building units, such as diketopyrrolopyrrole, [24,26,27] isoindigo, [28,29] and indacenodithiophene. [30] Similar efforts have been devoted to improving n-channel polymer semiconductors, with the performances of n-type devices still lagging behind their p-channel counterparts.…”

Section: Introductionmentioning

confidence: 99%

High‐Mobility Naphthalene Diimide and Selenophene‐Vinylene‐Selenophene‐Based Conjugated Polymer: n‐Channel Organic Field‐Effect Transistors and Structure–Property Relationship

Sung

Luzio

Park

et al. 2016

Adv Funct Materials

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Interdependence of chemical structure, thin-film morphology, and transport properties is a key, yet often elusive aspect characterizing the design and development of high-mobility, solution-processed polymers for large-area and flexible electronics applications. There is a specific need to achieve >1 cm 2 V −1 s −1 field-effect mobilities (μ) at low processing temperatures in combination with environmental stability, especially in the case of electron-transporting polymers, which are still lagging behind hole transporting materials. Here, the synthesis of a naphthalene-diimide based donor-acceptor copolymer characterized by a selenophene vinylene selenophene donor moiety is reported. Optimized field-effect transistors show maximum μ of 2.4 cm 2 V −1 s −1 and promising ambient stability. A very marked film structural evolution is revealed with increasing annealing temperature, with evidence of a remarkable 3D crystallinity above 180 °C. Conversely, transport properties are found to be substantially optimized at 150 °C, with limited gain at higher temperature. This discrepancy is rationalized by the presence of a surface-segregated prevalently edge-on packed polymer phase, dominating the device accumulated channel. This study therefore serves the purpose of presenting a promising, high-electron-mobility copolymer that is processable at relatively low temperatures, and of clearly highlighting the necessity of specifically investigating channel morphology in assessing the structure-property nexus in semiconducting polymer thin films.

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“…PEN is a transparent aromatic polyester with a similar structure as PET. Polyester resins of PET and PEN are used in various applications, such as films, fibers, bottles, and hot filling containers, and also for high‐performance applications, such as substrates in flexible electronic devices . Nowadays, there is a great interest in flexible electronics devices.…”

Section: Introductionmentioning

confidence: 99%

Interrelationship of thermal and mechanical properties of poly(ethylene terephthalate)/poly(ethylene 2,6-naphthalate)/graphene nanocomposites

Ghadami

Ehsani

Khonakdar

2015

J Vinyl Addit Technol

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In the present work, attempts were made to investigate the thermal and mechanical properties of melt‐processed poly(ethylene terephthalate) (PET)/poly(ethylene 2,6‐naphthalate) (PEN) blends and its nanocomposites containing graphene by using differential scanning calorimetry and tensile test experimenting. The results showed that crystallinity, which depends on a blend ratio, completely disappeared in a composition of 50/50. By introducing graphene to PET, even in low concentrations, the crystallinity of samples increased, while the nanocomposite of PEN indicated reverse behavior, and the crystallinity was reduced by adding graphene. In the case of PET‐rich (75/25) nanocomposite blends, by increasing the nano content in the blend, the crystallinity of the samples was enhanced. This behavior was attributed to the nucleating effect of graphene particles in the samples. From the results of mechanical experiments, it was found in PET‐rich blends that by increasing the PEN/PET ratio, the modulus of samples decreased, whereas in the case of PEN‐rich blends, a slight increment of modulus is seen as a result of the increment of the PEN/PET ratio. The two contradicting behaviors were attributed to the reduction of crystallinity of PET‐rich blends by enhancement of PEN/PET ratio and the rigid structure of PEN chains in PEN‐rich blends. Unlike the different modulus change of PET‐rich and PEN‐rich blends, the nanocomposites of these blends similarly indicated an increment of modulus and characteristics of rigid materials by increasing the nano content. Furthermore, the same behavior was detected in nanocomposites of each polymer (PET and PEN nanocomposites). The alteration from ductile to rigid conduction was related to the impedance in the role of graphene plates against the flexibility of polymer chains and high values of graphene modulus. J. VINYL ADDIT. TECHNOL., 23:210–218, 2017. © 2015 Society of Plastics Engineers

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High-resolution direct-writing of metallic electrodes on flexible substrates for high performance organic field effect transistors

Cited by 45 publications

References 68 publications

Fully Inkjet‐Printed Organic Photodetectors with High Quantum Yield

Fully Inkjet‐Printed Organic Photodetectors with High Quantum Yield

High‐Mobility Naphthalene Diimide and Selenophene‐Vinylene‐Selenophene‐Based Conjugated Polymer: n‐Channel Organic Field‐Effect Transistors and Structure–Property Relationship

Interrelationship of thermal and mechanical properties of poly(ethylene terephthalate)/poly(ethylene 2,6-naphthalate)/graphene nanocomposites

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