Morphology of inkjet printed 6,13 bis(tri-isopropylsilylethynyl) pentacene on surface-treated silica

Wang, Xianghua; Xiong, Xian Feng; Qiu, Long Zhen; Lv, Guo Qiang

doi:10.1116/1.3693415

Cited by 5 publications

(4 citation statements)

References 13 publications

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“…Deionized water and methylene iodide are used as the test liquids. More details were described in a previous report [21]. Film morphology of TIPS-PEN is characterized with optical microscope (Leica DM2500M equipped with polarizer and analyzer) and atomic force microscope (AFM, Bruker Multimode).…”

Section: Methodsmentioning

confidence: 99%

“…It is further observed that the critical value of concentration is negatively related with the surface energy of the dielectric substrate. Solvent-cleaning of the SiO 2 /Si wafer with acetone would reduce uniformity in surface property at the micron scale [21]. Single-drop films printed on such a heterogeneous surface are smaller in diameter, which was ascribed to distortion of contact line pinning due to the micron scale perturbation on the substrate.…”

Section: Inkjet Printing Of Isolating Dotsmentioning

confidence: 99%

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Process optimization for inkjet printing of triisopropylsilylethynyl pentacene with single-solvent solutions

et al. 2015

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Section: Methodsmentioning

confidence: 99%

Section: Inkjet Printing Of Isolating Dotsmentioning

confidence: 99%

Process optimization for inkjet printing of triisopropylsilylethynyl pentacene with single-solvent solutions

et al. 2015

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“…More details of surface energy measurement and its effect on single-drop inkjet-printed film morphology were previously reported. 19 It should be noted that UV-ozone treatment may not only affect the surface energy but also remove contamination on the surface producing a more uniform surface property. 20 However, the hydrophilic surface is rather unstable in air ambient.…”

Section: Surface Characterization and Inkjet Printingmentioning

confidence: 99%

Interfacial nucleation behavior of inkjet-printed 6,13 bis(tri-isopropylsilylethynyl) pentacene on dielectric surfaces

Wang

Yuan

et al. 2015

Journal of Applied Physics

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The performance of organic thin film transistors (OTFTs) is heavily dependent on the interface property between the organic semiconductor and the dielectric substrate. Device fabrication with bottom-gate architecture by depositing the semiconductors with a solution method is highly recommended for cost-effectiveness. Surface modification of the dielectric layer is employed as an effective approach to control film growth. Here, we perform surface modification via a self-assembled monolayer of silanes, a spin-coated polymer layer or UV-ozone cleaning, to prepare surfaces with different surface polarities and morphologies. The semiconductor is inkjet-printed on the surface-treated substrates as single-line films with overlapping drop assignment. Surface morphologies of the dielectric before film deposition and film morphologies of the inkjet-printed semiconductor are characterized with polarized microscopy and AFM. Electrical properties of the films are studied through organic thin-film transistors with bottom-gate/bottom-contact structure. With reduced surface polarity and nanoscale aggregation of silane molecules on the substrates, semiconductor nucleates from the interior interface between the ink solution and the substrate, which contributes to film growth with higher crystal coverage and better film quality at the interface. Surface treatment with hydrophobic silanes is a promising approach to fabrication of high performance OTFTs with nonpolar conjugated molecules via solution methods.

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“…A methodology of process development is formulated primarily based on the modulation of surface energy, which is measurable for a liquid droplet or a solid surface [5]. In the first part, also the major part, TIPS-PEN is evaluated as the channel semiconductor of OTFTs.…”

Section: Introductionmentioning

confidence: 99%

Surface Energy-Modulated Inkjet Printing of Semiconductors

Wang¹,

Yuan²,

Qin³

2016

Printed Electronics - Current Trends and Applications

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Small-molecule organic semiconductors and quantum dots stabilized with organic surface ligand are drawing attention in future generation solution-processed devices because of their solubility in miscellaneous solvents. Solvent processing and device performance can be effectively modulated with a surface modification layer on the substrate or via ink formulation. Characterization of surface property, specifically the surface energy of the substrate and the liquid, is essentially informative. Investigation on film growth and assembling behavior as well as process optimization via surface energy modulation is successfully achieved.

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Morphology of inkjet printed 6,13 bis(tri-isopropylsilylethynyl) pentacene on surface-treated silica

Abstract: Articles you may be interested inInterfacial nucleation behavior of inkjet-printed 6,13 bis(tri-isopropylsilylethynyl) pentacene on dielectric surfaces

Cited by 5 publications

References 13 publications

Process optimization for inkjet printing of triisopropylsilylethynyl pentacene with single-solvent solutions

Process optimization for inkjet printing of triisopropylsilylethynyl pentacene with single-solvent solutions

Interfacial nucleation behavior of inkjet-printed 6,13 bis(tri-isopropylsilylethynyl) pentacene on dielectric surfaces

Surface Energy-Modulated Inkjet Printing of Semiconductors

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