High mechanical and electrical reliability of bottom-gate microcrystalline silicon thin film transistors on polyimide substrate

Huang, Jung-Jie; Chen, Yung-Pei; Lien, Shui−Yang; Weng, Ko-Wei; Chao, Ching-Hsun

doi:10.1016/j.cap.2010.11.057

Cited by 24 publications

(10 citation statements)

References 9 publications

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“…So far, several types of flexible substrates have been reported ( Table 1 ), such as metal foils, very thin glass plastics, polydimethylsiloxane, rubber, and silk [ 112 , 113 , 114 , 115 , 116 ]. To be an excellent candidate material for flexible substrates, some requirements should be satisfied including remarkable mechanical deforming ability, smooth surface, good thermal durability, high oxygen and moisture blocking capability, and effective transparency for bottom-emitting and transparent FWOLEDs [ 117 , 118 , 119 ]. Among flexible substrates, although metal foils can undergo high working temperatures, the relatively heavy weight, rough surface, and insulating layers located between substrates and devices complicate FWOLEDs.…”

Section: Fundamental Concepts Of Fwoledsmentioning

confidence: 99%

Emergence of Flexible White Organic Light-Emitting Diodes

et al. 2019

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Flexible white organic light-emitting diodes (FWOLEDs) have considerable potential to meet the rapidly growing requirements of display and lighting commercialization. To achieve high-performance FWOLEDs, (i) the selection of effective flexible substrates, (ii) the use of transparent conducting electrodes, (iii) the introduction of efficient device architectures, and iv) the exploitation of advanced outcoupling techniques are necessary. In this review, recent state-of-the-art strategies to develop FWOLEDs have been summarized. Firstly, the fundamental concepts of FWOLEDs have been described. Then, the primary approaches to realize FWOLEDs have been introduced. Particularly, the effects of flexible substrates, conducting electrodes, device architectures, and outcoupling techniques in FWOLEDs have been comprehensively highlighted. Finally, issues and ways to further enhance the performance of FWOLEDs have been briefly clarified.

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Section: Fundamental Concepts Of Fwoledsmentioning

confidence: 99%

Emergence of Flexible White Organic Light-Emitting Diodes

et al. 2019

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“…Schematic of wear behavior of (a) neat PA6 and (b) PA6/ND-COOH at 1 wt%. 45 as optoelectronics, [55][56][57] organic light emitting display devices operating at high temperatures, 58,59 and flexible solar cells. 60 Both pristine and surface-modified ND particles in PI enhanced the thermal stability and thermal conductivity.…”

Section: Pi/nd Nanocompositesmentioning

confidence: 99%

“…49,50 Incorporating ND particles in high-performance PI may impart remarkable properties to their nanocomposites, like other nanoparticle filled PIs used in coatings, adhesives, and fibers in aerospace, electronics, and other highly technical industries. 51,52 Neat, wholly aromatic PI films have excellent properties such as high thermal robustness, high chemical resistance, superior mechanical properties, and strong dielectric features suitable for specialty engineering applications, 53,54 such as optoelectronics, 55–57 organic light emitting display devices operating at high temperatures, 58,59 and flexible solar cells. 60 Both pristine and surface-modified ND particles in PI enhanced the thermal stability and thermal conductivity.…”

Section: Pi/nd Nanocompositesmentioning

confidence: 99%

Nanodiamond reinforcement in polyamide and polyimide matrices: Fundamentals and applications

Kausar

2018

Journal of Plastic Film & Sheeting

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Nanodiamond is an emerging nanocarbon material having several advantageous properties (high surface area, mechanical properties, optical features, wear resistance, low friction coefficient, etc.) as a nano-sized filler for polymer matrices. Polyamides and polyimides are two important thermoplastic polymers which are among important matrices for nanodiamond composites. Polyamides have high thermal stability, mechanical strength, wear resistance, superior tribological properties, and fine processability. Many aliphatic polyamides, such as polyamide 6, polyamide 6,6, polyamide11, polyamide 12, and several aromatic polyamides have been reinforced with nanodiamond to further enhance their engineering properties. Similarly, outstanding mechanical, thermal, optical, and electrical properties of aromatic polyimides have been enhanced by using nanodiamond particles. Surface nanodiamond modification with various functional groups has been achieved to enhance interfacial adhesion with the matrix, which in turn, improved the physical properties. Polyamide/nanodiamond nanocomposites and polyimide/nanodiamond nanocomposites have been prepared using in situ reactive polymerization, melt extrusion, solution processing, and other techniques. The improved electrical, mechanical, thermal, and biomedical properties render them potentially important materials for various technical applications including energy storage, membrane technology, coatings, and biomedical.

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“…The ideal optically colourless polymer film requires stability at high processing temperatures, high transparency in the visible range, and good mechanical properties. For example, in the manufacture of organic light emitting devices (OLEDs), the processing temperature on flexible polymer films might exceed 300°C [1]. Most of common transparent polymers such as PS, PC, PET, PEN with glass transition temperature, T g < 150°C obviously cannot tolerate such high temperature.…”

Section: Introductionmentioning

confidence: 99%

Microwave-assisted synthesis of high thermal stability and colourless polyimides containing pyridine

Cheng

et al. 2019

R. Soc. open sci.

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A novel aromatic diamine containing pyridyl side group, 4-pyridine-4,4-bis(3,5-dimethyl-5-aminophenyl)methane (PyDPM), was successfully synthesized via electrophilic substitution reaction. The polyimides (PIs) containing pyridine were obtained via the microwave-assisted one-step polycondensation of the PyDPM with pyromellitic dianhydride (PMDA), 3,3′,4,4′-biphenyltetracarboxylic dianhydride (BPDA), 3,3′,4,4′-diphenylether tetracarboxylic dianhydride (ODPA) and 4,4′-(hexafluoroisopropylidene)diphthalic anhydride (6FDA). Contrarily to the reported similar PIs, these PIs exhibit much higher thermal stability or heat resistance, i.e. high glass transition temperatures ( T g s) in the range of 358–473°C, and the decomposition temperatures at 5% weight loss over 476°C under nitrogen. They can afford flexible and strong films with tensile strength of 82.1–93.3 MPa, elongation at break of 3.7%–15.2%, and Young's modulus of 3.3–3.8 GPa. Furthermore, The PI films exhibit good optical transparency with the cut-off wavelength at 313–366 nm and transmittance higher than 73% at 450 nm. The excellent thermal and optical transmittance can be attributed to synthesis method and the introduction of pyridine rings and ortho-methyl groups. The inherent viscosities of PIs via one-step method were found to be 0.58–1.12 dl g −1 in DMAc, much higher than those via two-step method. These results indicate these PIs could be potential candidates for optical substrates of organic light emitting diodes (OLEDs).

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High mechanical and electrical reliability of bottom-gate microcrystalline silicon thin film transistors on polyimide substrate

Cited by 24 publications

References 9 publications

Emergence of Flexible White Organic Light-Emitting Diodes

Emergence of Flexible White Organic Light-Emitting Diodes

Nanodiamond reinforcement in polyamide and polyimide matrices: Fundamentals and applications

Microwave-assisted synthesis of high thermal stability and colourless polyimides containing pyridine

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