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1.
Wang Eric Ke Wang Fan Kumari Saru Yeh Jyh-Haw Chen Chien-Ming 《The Journal of supercomputing》2021,77(3):3024-3043
The Journal of Supercomputing - Accidents often occur in the earth—typhoons, floods, earthquakes, traffic accidents and so on. Whether these accidents can be timely and effectively responded... 相似文献
2.
Lee Ming-Che Chiang Shu-Yin Yeh Sheng-Cheng Wen Ting-Feng 《Multimedia Tools and Applications》2020,79(27-28):19629-19657
Multimedia Tools and Applications - With the development of technology, the importance of the research on speech emotion recognition and semantic analysis has increased. The research is primarily... 相似文献
3.
Solution‐Processed High‐Performance Tetrathienothiophene‐Based Small Molecular Blends for Ambipolar Charge Transport 下载免费PDF全文
Sureshraju Vegiraju Chih‐Yu Lin Pragya Priyanka Deng‐Yi Huang Xian‐Lun Luo Hsiang‐Chi Tsai Shao‐Huan Hong Chia‐Jung Yeh Wei‐Chieh Lien Chien‐Lung Wang Shih‐Huang Tung Cheng‐Liang Liu Ming‐Chou Chen Antonio Facchetti 《Advanced functional materials》2018,28(28)
Four soluble dialkylated tetrathienoacene ( TTAR) ‐based small molecular semiconductors featuring the combination of a TTAR central core, π‐conjugated spacers comprising bithiophene ( bT ) or thiophene ( T ), and with/without cyanoacrylate ( CA ) end‐capping moieties are synthesized and characterized. The molecule DbT‐TTAR exhibits a promising hole mobility up to 0.36 cm2 V?1 s?1 due to the enhanced crystallinity of the microribbon‐like films. Binary blends of the p‐type DbT‐TTAR and the n‐type dicyanomethylene substituted dithienothiophene‐quinoid ( DTTQ‐11 ) are investigated in terms of film morphology, microstructure, and organic field‐effect transistor (OFET) performance. The data indicate that as the DbT‐TTAR content in the blend film increases, the charge transport characteristics vary from unipolar (electron‐only) to ambipolar and then back to unipolar (hole‐only). With a 1:1 weight ratio of DbT‐TTAR DTTQ‐11 in the blend, well‐defined pathways for both charge carriers are achieved and resulted in ambipolar transport with high hole and electron mobilities of 0.83 and 0.37 cm2 V?1 s?1, respectively. This study provides a viable way for tuning microstructure and charge carrier transport in small molecules and their blends to achieve high‐performance solution‐processable OFETs. 相似文献
4.
Influence of Bulky Organo‐Ammonium Halide Additive Choice on the Flexibility and Efficiency of Perovskite Light‐Emitting Devices 下载免费PDF全文
Lianfeng Zhao Nicholas Rolston Kyung Min Lee Xunhua Zhao Marcos A. Reyes‐Martinez Nhu L. Tran Yao‐Wen Yeh Nan Yao Gregory D. Scholes Yueh‐Lin Loo Annabella Selloni Reinhold H. Dauskardt Barry P. Rand 《Advanced functional materials》2018,28(31)
Perovskite light‐emitting diodes (LEDs) require small grain sizes to spatially confine charge carriers for efficient radiative recombination. As grain size decreases, passivation of surface defects becomes increasingly important. Additionally, polycrystalline perovskite films are highly brittle and mechanically fragile, limiting their practical applications in flexible electronics. In this work, the introduction of properly chosen bulky organo‐ammonium halide additives is shown to be able to improve both optoelectronic and mechanical properties of perovskites, yielding highly efficient, robust, and flexible perovskite LEDs with external quantum efficiency of up to 13% and no degradation after bending for 10 000 cycles at a radius of 2 mm. Furthermore, insight of the improvements regarding molecular structure, size, and polarity at the atomic level is obtained with first‐principles calculations, and design principles are provided to overcome trade‐offs between optoelectronic and mechanical properties, thus increasing the scope for future highly efficient, robust, and flexible perovskite electronic device development. 相似文献
5.
Li Lu-Lin Yeh Hung-Che 《Journal of Materials Science: Materials in Electronics》2021,32(11):14358-14367
Journal of Materials Science: Materials in Electronics - Five polyethylene glycol (PEG)-based compounds with varying terminal functional groups were investigated as suppressors to investigate the... 相似文献
6.
(Ti,V)2AlC/Al2O3 solid solution composites were prepared by solid state combustion simultaneously incorporating reduction reactions of V2O5 and TiO2/V2O5 with aluminum. Two reaction systems composed of Ti–V2O5–Al–Al4C3 and TiO2–V2O5–Al–Al4C3 powder mixtures were studied. Combustion exothermicity was enhanced by increasing V2O5 and Al, which not only caused an increase in the combustion temperature and reaction front velocity, but also facilitated evolution of the (Ti,V)2AlC phase. Between two reaction systems, the Ti-containing samples were more energetic and produced (Ti1–xVx)2AlC/Al2O3 composites with x = 0.2–0.8. The degree of element substitution was reduced for the samples adopting TiO2, which yielded Al2O3-added (Ti1–yVy)2AlC with y = 0.4–0.8. 相似文献
7.
Fabrication of alumina-chromium carbide composites was investigated by PTFE-activated Cr2O3/Al/C combustion synthesis. PTFE was employed as not only a reaction promoter, but a carburizing agent. Three reaction systems were prepared with different contents of carbon for the synthesis of Cr23C6, Cr7C3, and Cr3C2. The amounts of PTFE were selected to ensure combustion synthesis in the SHS (self-propagating high-temperature synthesis) mode and to provide carbon in quantities of 15 and 25?mol% of the total carbon. Experimental results showed that the combustion wave velocity and temperature decreased with increasing carbon, but increased with PTFE. A correlation between combustion wave velocity and temperature contributed to determination of the activation energy Ea =?89.15?kJ/mol for the combustion reaction. The increase of PTFE also improved formation of chromium carbides. As a result, the Cr23C6– and Cr7C3–Al2O3 composites were produced with almost no impurities. Due to a loss of carbon in carbothermic reduction, the Cr3C2–Al2O3 composite was obtained with Cr7C3 as the secondary carbide. SEM micrographs and DES analyses indicated that spherical carbide grains with a size of 0.5–3.0 μm were synthesized. 相似文献
8.
Properties of polyamide 6,10/poly(vinyl alcohol) blends and impact on oxygen barrier performance 下载免费PDF全文
Jia‐wei Wu Ya‐qiong Huang Hong‐bo Li James Runt Jen‐taut Yeh 《Polymer International》2018,67(4):453-462
The oxygen transmission rate, average volume of free‐volume cavities (Vf) and fractional free volume (Fv) of polyamide 6,10 (PA610)/poly(vinyl alcohol) (PVA) (i.e. PA610xPVA05y, PA610xPVA08y and PA610xPVA14y) blend films reduced to minimum values when their PVA contents reached corresponding optimal values. Oxygen transmission rate, Vf and Fv values obtained for optimal PA610xPVAzy blown films were reduced considerably with decreasing PVA degrees of polymerization. The oxygen transmission rate of the optimal bio‐based PA61080PVA0520 blown film was only 2.4 cm3 (m2·day·atm)?1, which is about the same as that of the most often used high‐barrier polymer, ethylene–vinyl alcohol copolymer. Experimental findings from dynamic mechanical analysis, differential scanning calorimetry, wide‐angle X‐ray diffraction and Fourier transform infrared spectroscopy of the PA610xPVAzy blends indicate that PA610 and PVA in the blends are miscible to some extent at the molecular level when the PVA contents are less than or equal to the corresponding optimal values. The considerably enhanced oxygen barrier properties of the PA610xPVAzy blend films with optimized compositions are attributed to the significantly reduced local free‐volume characteristics. © 2017 Society of Chemical Industry 相似文献
9.
Dong Haizhou Li Xiaoying Yeh Tian-Chyi Jim Ge Jian 《Bulletin of Engineering Geology and the Environment》2020,79(6):2871-2881
Bulletin of Engineering Geology and the Environment - Concentrated leakage channels formed in dam foundations have severe impacts on the safety of hydraulic structures. Appropriate and effective... 相似文献
10.
Dr. James P. Holt-Martyn Dr. Rasheduzzaman Chowdhury Dr. Anthony Tumber Dr. Tzu-Lan Yeh Dr. Martine I. Abboud Dr. Kerstin Lippl Dr. Christopher T. Lohans Dr. Gareth W. Langley William Figg Jr. Dr. Michael A. McDonough Prof. Dr. Christopher W. Pugh Prof. Dr. Peter J. Ratcliffe Prof. Dr. Christopher J. Schofield 《ChemMedChem》2020,15(3):270-273
The 2-oxoglutarate-dependent hypoxia inducible factor prolyl hydroxylases (PHDs) are targets for treatment of a variety of diseases including anaemia. One PHD inhibitor is approved for use for the treatment of renal anaemia and others are in late stage clinical trials. The number of reported templates for PHD inhibition is limited. We report structure–activity relationship and crystallographic studies on a promising class of 4-hydroxypyrimidine-containing PHD inhibitors. 相似文献