Journal ArticleDOI
Fabrication of highly oriented large-scale TIPS pentacene crystals and transistors by the Marangoni effect-controlled growth method
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TLDR
The MOG method, which has potential to be used in batch production and features easy control of crystal growth using non-contact forces, will benefit the development of low-cost, high-performance, organic semiconductor devices.Abstract:
We demonstrate a solution method of Marangoni effect-controlled oriented growth (MOG) to fabricate highly oriented crystals of 6,13-bis(triisopropylsilylethynyl)pentacene (TIPS pentacene) on the Si/SiO2 substrate. Based on the Marangoni effect induced by mixed solvent systems, large area aligned ribbon crystals can be achieved, covering over 60% on 4 cm × 1 cm Si/SiO2 substrates. We investigated the growth mechanism of the MOG method and found that the correct choice of solvents and appropriate solvent ratios are in favor of aligned crystal growth. With the ribbon crystals of TIPS pentacene, top-contact organic field-effect transistors are fabricated. The optimal device exhibits a field-effect mobility of 0.70 ± 0.22 cm2 V−1 s−1 and an on/off ratio of 105. The MOG method, which has potential to be used in batch production and features easy control of crystal growth using non-contact forces, will benefit the development of low-cost, high-performance, organic semiconductor devices.read more
Citations
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Journal ArticleDOI
Marangoni-Effect-Assisted Bar-Coating Method for High-Quality Organic Crystals with Compressive and Tensile Strains
TL;DR: In this paper, the Marangoni flow induced by a temperature-dependent surface-tension gradient near the meniscus line shows negative effects on the deposited crystals and its electrical properties.
Journal ArticleDOI
Direct Synthesis of a Self-Assembled WSe2 /MoS2 Heterostructure Array and its Optoelectrical Properties.
Jae Bok Lee,Yi Rang Lim,Ajit K. Katiyar,Wooseok Song,Jongsun Lim,Sukang Bae,Tae-Wook Kim,Seoung-Ki Lee,Jong Hyun Ahn +8 more
TL;DR: A direct synthesis method is introduced to fabricate an array of self-assembled WSe2 /MoS2 heterostructures through facile solution-based directional precipitation, which shows not only high rectification but also promising optoelectrical properties.
Journal ArticleDOI
Performance enhancement in mechanically stable flexible organic-field effect transistors with TIPS-pentacene:polymer blend
TL;DR: Flexible organic field effect transistors (OFETs) with TIPS-pentacene: polystyrene (PS) blend are demonstrated to exhibit enhanced mobility and significantly improved electrical stability compared to neat TIPS pentacene on poly(4-vinylphenol) (PVP) dielectric (bi-layer OFETs), along with high mechanical stability.
Journal ArticleDOI
Effect of Li Adsorption on the Electronic and Hydrogen Storage Properties of Acenes: A Dispersion-Corrected TAO-DFT Study
S. Seenithurai,Jeng-Da Chai +1 more
TL;DR: Li-adsorbed acenes can be high-capacity hydrogen storage materials for reversible hydrogen uptake and release at ambient conditions using recently developed thermally-assisted-occupation density functional theory (TAO-DFT).
Journal ArticleDOI
Alignment and patterning of organic single crystals for field-effect transistors
TL;DR: In this paper, a review of crystal alignment and patterning techniques for organic field effect transistors is presented, based on single crystals, which are potentially promising for high performance due to high purity and well-ordered molecular arrangement.
References
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Capillary flow as the cause of ring stains from dried liquid drops
TL;DR: In this article, the authors ascribe the characteristic pattern of the deposition to a form of capillary flow in which pinning of the contact line of the drying drop ensures that liquid evaporating from the edge is replenished by liquid from the interior.
Journal ArticleDOI
Highly sensitive flexible pressure sensors with microstructured rubber dielectric layers
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TL;DR: Flexible, capacitive pressure sensors with unprecedented sensitivity and very short response times that can be inexpensively fabricated over large areas by microstructuring of thin films of the biocompatible elastomer polydimethylsiloxane are demonstrated.
Journal ArticleDOI
Marangoni effect reverses coffee-ring depositions.
Hua Hu,Ronald G. Larson +1 more
TL;DR: It is shown here both experimentally and theoretically that the formation of "coffee-ring" deposits observed at the edge of drying water droplets requires not only a pinned contact line but also suppression of Marangoni flow.
Journal ArticleDOI
Ultra-high mobility transparent organic thin film transistors grown by an off-centre spin-coating method
Yongbo Yuan,Gaurav Giri,Alexander L. Ayzner,Alexander L. Ayzner,Arjan P. Zoombelt,Stefan C. B. Mannsfeld,Jihua Chen,Dennis Nordlund,Michael F. Toney,Jinsong Huang,Zhenan Bao +10 more
TL;DR: The growth of a highly aligned meta-stable structure of 2,7-dioctyl[1]benzothieno[3,2-b][1] Benzothiophene (C8-BTBT) is described from a blended solution of C8- BTBT and polystyrene by using a novel off-centre spin-coating method, indicating their potential for transparent, high-performance organic electronics.
Journal ArticleDOI
Solution coating of large-area organic semiconductor thin films with aligned single-crystalline domains
Ying Diao,Benjamin C. K. Tee,Gaurav Giri,Jie Xu,Jie Xu,Do Hwan Kim,Do Hwan Kim,Hector A. Becerril,Hector A. Becerril,Randall M. Stoltenberg,Randall M. Stoltenberg,Tae Hoon Lee,Gi Xue,Stefan C. B. Mannsfeld,Zhenan Bao +14 more
TL;DR: An approach--termed fluid-enhanced crystal engineering (FLUENCE)--that allows for a high degree of morphological control of solution-printed thin films and may find use in the fabrication of high-performance, large-area printed electronics.