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Ultrahigh energy storage density of 52.4 J cm−3 with optimistic efficiency of 72.3% is achieved by interface engineering of epitaxial lead‐free oxide multilayers at room temperature. Moreover, the excellent thermal stability of the performances provides solid basis for widespread applications of the thin film systems in modern electronic and power modules in harsh working environments.
A series of poly(phenylene)-based polyelectrolytes were synthesized from trifluoroacetophenone and N-methylisatin by superacid catalyzed polyhydroxyalkylation reaction. Postsulfonation of this high molecular weight and thermochemically stable poly(phenylene) with concentrated sulfuric acid resulted in homogeneous polyelectrolytes with controllable ion content (IEC: 1.40–2.39 meq./g). All these membranes...
The permanent component of NBTI stress induced degradation in pMOSFETs with oxynitride gate dielectrics has been studied experimentally. It is observed that the magnitude of permanent degradation component is determined by the equivalent stress time under a given set of stress conditions, regardless of stress gate voltage interruptions. The permanent component follows a power-law time dependence with...
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