Journal ArticleDOI
Self-assembly crystal microribbons with nucleation additive for high-performance organic thin film transistors
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TLDR
In this paper, the authors demonstrate fabrication of 6,13-bis(triisopropylsilylethynyl) pentacene (TIPS) crystal microribbon based organic thin film transistors (OTFTs) with a solvent exchange method and the addition of a nucleation agent.Abstract:
We demonstrate fabrication of 6,13-bis(triisopropylsilylethynyl) pentacene (TIPS pentacene) crystal microribbon based organic thin film transistors (OTFTs) with a solvent exchange method and the addition of a nucleation agent. TIPS pentacene crystals were formed via self-assembly as a result of solubility difference between the double solvents. At the same time, 4-hexylbenzoic acid (HBA) was added as a nucleation agent and formed an interfacial layer on the silicon dioxide gate dielectrics, which dispersed the aggregated crystals and enhanced its morphology uniformity. TIPS pentacene crystal microribbon based OTFTs with HBA nucleation additive showed a hole mobility of up to 0.36 cm2 V−1 s−1, and particularly, a 9-fold enhancement in average mobilities, as compared to pristine crystal based OTFTs. The remarkable enhancement in device performance can be attributed to the improved crystallinity, reduced defects and charge trap centers located at the grain boundaries, and controlled crystallization and dispersion effect due to the addition of the HBA nucleation agent.read more
Citations
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Journal ArticleDOI
Ultra-low misorientation angle in small-molecule semiconductor/polyethylene oxide blends for organic thin film transistors
TL;DR: In this paper, the use of a nonconjugated semicrystalline polymer as a film-forming agent to control the crystallization and tune the charge transport of solution-processed, small-molecule organic semiconductors was reported.
Journal ArticleDOI
Optimizing the piezoelectric vibration of Pb(Mg1/3Nb2/3)O3-0.25PbTiO3 single crystal by alternating current polarization for ultrasonic transducer
Jialin Xu,Zhang Zhang,Sixing Liu,Junjie Xiao,Junjie Xiao,Qingwen Yue,Hao Deng,Xian Wang,Di Lin,Feifei Wang,Rui Zhang,Xiaobing Li,Haosu Luo +12 more
TL;DR: In this paper, the beam mode vibration of PMN-0.25PT single crystal resonators after ACP was investigated by combining experimental impedance measurements and finite element simulation, and the complete material coefficients were obtained by using pulse-echo ultrasound and inverse impedance spectroscopy.
Journal ArticleDOI
Long-range crystal alignment with polymer additive for organic thin film transistors
TL;DR: In this article, the effect of a poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) polymer to control the crystal growth of solution-processed, small-molecule organic semiconductors and to improve the device performance of organic thin film transistors (OTFTs).
Journal ArticleDOI
Small-molecule additives for organic thin film transistors
TL;DR: In this article, the effects of small-molecule additives on the semiconductor crystallization, film morphology, and charge transport were discussed. But the authors focused on the effect of small molecule additive on the performance of the organic thin-film transistors.
References
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Journal ArticleDOI
Elastomeric Transistor Stamps: Reversible Probing of Charge Transport in Organic Crystals
Vikram C. Sundar,Jana Zaumseil,Vitaly Podzorov,Etienne Menard,R. L. Willett,Takao Someya,Michael Gershenson,John A. Rogers +7 more
TL;DR: This method, which eliminates exposure of the fragile organic surface to the hazards of conventional processing, enables fabrication of rubrene transistors with charge carrier mobilities as high as ∼15 cm2/V·s and subthreshold slopes as low as 2nF·V/decade·cm2.
Journal ArticleDOI
Functionalized Pentacene: Improved Electronic Properties from Control of Solid-State Order
TL;DR: The preparation of two functionalized pentacene derivatives, and the effect of this functionalization on both the solid-state ordering and the electronic properties of the resulting crystals is reported.
Journal ArticleDOI
Intrinsic Charge Transport on the Surface of Organic Semiconductors
Vitaly Podzorov,Etienne Menard,A. Borissov,Valery Kiryukhin,John A. Rogers,Michael Gershenson +5 more
TL;DR: The air-gap field-effect technique enabled realization of the intrinsic (not limited by static disorder) polaronic transport on the surface of rubrene (C42H28) crystals over a wide temperature range.
Journal ArticleDOI
Effects of film morphology and gate dielectric surface preparation on the electrical characteristics of organic-vapor-phase-deposited pentacene thin-film transistors
TL;DR: In this paper, organic vapor phase deposition was used to grow polycrystalline pentacene channel thin-film transistors, and O2-plasma treated SiO2 was treated with octadecyltrichlorosilane (OTS) prior to Pentacene deposition.
Journal ArticleDOI
High mobility solution processed 6,13-bis(triisopropyl-silylethynyl) pentacene organic thin film transistors
TL;DR: In this article, a solution-processed organic thin film transistors (OTFTs) with carrier mobility > 1cm2∕Vs, current on/off ratio greater than 107, and subthreshold slope < 0.3V/decade were fabricated.