Spray printing of organic semiconducting single crystals

Rigas, Grigorios-Panagiotis; Payne, Marcia M.; Anthony, John E.; Horton, Peter N.; Castro, Fernando A.; Shkunov, Maxim

doi:10.1038/ncomms13531

Cited by 60 publications

(49 citation statements)

References 31 publications

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“…From the SCLC theory, the charge‐carrier mobility in this sample has been estimated to be (4.0 ± 0.7) × 10 −2 cm 2 V s −1 (see Figure S4, Supporting Information). This is a relatively low value when compared to recently reported TIPS single crystals . We attribute this difference to two factors: (i) the high surface roughness of the PEN substrate (which has an Rms, Root Mean Square roughness, in the order of several nanometers), that hinders a full and homogeneous contact of the crystals with the electrodes, and (ii) the still unoptimized printing process, which is not yet able to deliver uniformly oriented crystals, or, very likely, to a combination of these factors.…”

Section: Summary Of the Various Step Heights Observed In The Afm Scanmentioning

confidence: 73%

“…On the other hand, attempts to detach the printed crystals from the substrate to submit them to traditional XRD invariably resolved in crystals cracking/breaking. Therefore, we turned to polarized optical microscopy, since it is known that this technique can discern between single and polycrystals, even in the specific case of TIPS‐pentacene . Due to the setup characteristics (optical transmission microscope), the crystals have been imaged together with the underlying PEN substrate, which was transparent enough to observe that the printed crystals are actually single ones.…”

Section: Summary Of the Various Step Heights Observed In The Afm Scanmentioning

confidence: 99%

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Direct Inkjet Printing of TIPS‐Pentacene Single Crystals onto Interdigitated Electrodes by Chemical Confinement

Pipan

Bogar

Ciavatti

et al. 2017

Adv Materials Inter

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COMMUNICATION (1 of 8)self-standing crystals, like formation of cracks (even macroscopically invisible ones) and/or bad physical contact with the underlying substrate due to surface irregularity of the latter. Moreover, thanks to several centuries of development in the printing industry (the first reported print by J. Gutenberg is dated around 1450), this technology ensures very low production costs and high throughputs. Among the printing techniques that can be used with OSSCs, a particularly interesting one is inkjet (IJ) printing, which allows to rapidly deposit the desired compound only on selected parts of the substrate, minimizing material losses and increasing the overall process productivity. In the last 15 years, IJ printing of organic semiconductors has been explored, and examples of devices based on IJ-printed organic semiconductors and conductors include transistors, [12,13] organic ligth-emitting diodes (OLEDs), [14,15] different types of sensors, and biosensors. [16][17][18][19] These devices have been mainly realized taking advantage of polymers as the active materials, while in some cases soluble organic small molecules, that form highly polycrystalline thin films, have been used. Recently, some attention has been paid to IJ printing of molecules able to produce OSSCs, but such a growth from a small drop of IJ-deposited solutions is not straightforward. The crystallization mechanism at work in this case is the so-called "slow solvent evaporation," in which the solvent slowly evaporates, creating a supersaturation condition that results in nucleation and subsequent crystal growth. However, when this phenomenon occurs in very small volumes (as in the case of IJ-printed solutions, i.e., in the range of a few microliter to hundreds of microliter), a number of undesired processes can arise, like solution spreading on the substrate, or uncontrolled multiple nucleation or accumulation of material at the edges of the drop (the so-called coffee ring effect). [20] These phenomena, which result in the formation of polycrystalline films, are particularly evident when the drops are deposited onto highly heterogeneous substrates, as for example lithographically defined interdigitated electrodes. Jang and co-worker reported the IJ printing of polycrystalline films of TIPS-pentacene (6,13-bis(triisopropylsilylethynyl)pentacene, from now on TIPS), [21] a high-performing molecular semi conductor that delivers top charge-carrier mobilities exceeding 6 cm 2 V s −1 , [22] but usually in the range of 0.5-1 cm 2 V s −1 . [23,24] Interestingly, Organic semiconducting single crystals (OSSCs) are very promising for lowcost electronics, being the highest performers among organic semiconductors in terms of charge transport, with carrier mobilities exceeding 10 cm 2 V s −1 . Here, it is demonstrated how it is possible to obtain millimeter-long single crystals of 6,13-bis(triisopropylsilylethynyl)pentacene (TIPS-pentacene) onto gold interdigitated electrodes patterned onto flexible plastic substrates, via direct inkjet printin...

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Section: Summary Of the Various Step Heights Observed In The Afm Scanmentioning

confidence: 73%

Section: Summary Of the Various Step Heights Observed In The Afm Scanmentioning

confidence: 99%

Direct Inkjet Printing of TIPS‐Pentacene Single Crystals onto Interdigitated Electrodes by Chemical Confinement

Pipan

Bogar

Ciavatti

et al. 2017

Adv Materials Inter

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“…Furan-based biopolymers have received considerable attention in recent years because of their great potential to replace petroleum-based plastics [11]. Organic Semiconductor Single Crystals [58,71,72] are also considered to be an important research topic, given they are "ideal candidates for the construction of high-performance optoelectronic devices/circuits" [55]. In this study, we reported the topochemical polymerization of a furan-based diacetylene (Furan-DA 1).…”

Section: Discussionmentioning

confidence: 99%

Preparation and Single Crystal Structure Determination of the First Biobased Furan-Polydiacetylene Using Topochemical Polymerization

et al. 2019

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Crystal structure elucidations of bio-based polymers provide invaluable data regarding structure-property relationships. In this work, we achieved synthesis and Single Crystal X-ray Diffraction (SCXRD) structural determination of a new furan-based polydiacetylene (PDA) derivative with carbamate (urethane) functionality. Firstly, diacetylene (DA) monomers were found to self-assemble in the crystalline state in such a way that the polymerization theoretically occurred in two different directions. Indeed, for both directions, geometrical parameters for the reactive alignment of DA are satisfied and closely related with the optimal geometrical parameters for DA topochemical polymerization (d(1) = 4.7-5.2 Å, d(2) ≤ 3.8 Å, θ ≈ 45 • ). However, within the axis of hydrogen bonds (HB), the self-assembling monomers display distances and angles (d(1) = 4.816 Å, d(2) = 3.822 Å, θ = 51 • ) that deviate more from the ideal values than those in the perpendicular direction (d(1) = 4.915Å, d(2) = 3.499Å, θ ≈ 45 • ). As expected from these observations, the thermal topochemical polymerization occurs in the direction perpendicular to the HB and the resulting PDA was characterized by SCXRD.

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“…The 1D OSCCs are formed due to anisotropic growth in π–π stacking orientation, facilitating the carrier transport or photon propagation in the 1D crystals along the axial direction. So, besides the OFETs, 1D OSCCs have also exhibited great potential for laser and optical waveguide applications . 2D OSCCs are produced by the in‐plane growth of the crystals.…”

Section: Introductionmentioning

confidence: 99%

Precise Patterning of Organic Semiconductor Crystals for Integrated Device Applications

Zhang

Deng

Jia

et al. 2019

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Development of high‐performance organic electronic and optoelectronic devices relies on high‐quality semiconducting crystals that have outstanding charge transport properties and long exciton diffusion length and lifetime. To achieve integrated device applications, it is a prerequisite to precisely locate the organic semiconductor crystals (OSCCs) to form a specifically patterned structure. Well‐patterned OSCCs can not only reduce leakage current and cross‐talk between neighboring devices, but also facilely integrate with other device elements and their corresponding interconnects. In this Review, general strategies for the patterning of OSCCs are summarized, and the advantages and limitations of different patterning methods are discussed. Discussion is focused on an advanced strategy for the high‐resolution and wafer‐scale patterning of OSCC by a surface microstructure‐assisted patterning method. Furthermore, the recent progress on OSCC pattern‐based integrated circuities is highlighted. Finally, the research challenges and directions of this young field are also presented.

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Spray printing of organic semiconducting single crystals

Cited by 60 publications

References 31 publications

Direct Inkjet Printing of TIPS‐Pentacene Single Crystals onto Interdigitated Electrodes by Chemical Confinement

Direct Inkjet Printing of TIPS‐Pentacene Single Crystals onto Interdigitated Electrodes by Chemical Confinement

Preparation and Single Crystal Structure Determination of the First Biobased Furan-Polydiacetylene Using Topochemical Polymerization

Precise Patterning of Organic Semiconductor Crystals for Integrated Device Applications

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