Hermetic Seal of Organic Light Emitting Diode with Glass Frit

The components of OLED encapsulation with hermetic sealing and a 1026-day lifetime were measured by PXI-1033. The optimal characteristics were obtained when the thickness of the TPBi layer was 20 nm. This OLED obtained a maximum luminance (Lmax) of 25,849 cd/m² at a current density of 1242 mA/cm², an external quantum efficiency (EQE) of 2.28%, a current efficiency (CE) of 7.20 cd/A, and a power efficiency (PE) of 5.28 lm/W. The efficiency was enhanced by Lmax 17.2%/EQE 0.89%/CE 42.1%/PE 41.9%. The CIE coordinates of 0.32, 0.54 were all green OLED elements with wavelengths of 532 nm. The shear strain and leakage test gave results of 16 kgf and 8.92 × 10⁻⁹ mbar/s, respectively. The reliability test showed that the standard of MIL-STD-883 was obtained.     

Supercapacitive performance of porous graphene nanosheets in bis(trifluoromethylsulfony)imide and bis(fluorosulfonyl)imide ionic liquid electrolytes

Journal of Solid State Electrochemistry - A method of high-heating-rate thermal reduction is used to produce porous graphene nanosheets (PGNSs). This material is characterized by a unique holey...     

Feasibility of simultaneous NO reduction and electricity generation in SOFCs with V2O5 or Cu added LSCF-GDC cathodes

Solid oxide fuel cell (SOFC) units were constructed with Ni-GDC (gadolinia-doped ceria) as the anode, YSZ (yttria-stabilized zirconia) as the electrolyte, and V₂O₅ or Cu added La_0.58Sr_0.4Co_0.2Fe_0.8O_3?δ (LSCF)-GDC composites as the cathodes, respectively. The electrochemical NO reduction occurs over either V₂O₅ or Cu added LSCF-GDC cathode without or with the presence of oxygen. The maximum power density decreases with decreasing O₂ concentration. When the O₂ concentration is 3% or larger, simultaneous NO reduction and electricity generation in the SOFCs can be not only feasible but also beneficial via a synergistic effect.     

Synthesis and electroactivity of carbon-nanomaterials-supported Pd nanoparticles from self-regulated reduction of sodium <Emphasis Type="Italic">n</Emphasis>-dodecyl sulfate

This report describes that the Pd nanoparticles are prepared and decorated successfully at the sidewalls of single-walled carbon nanotubes, multiwall carbon nanotubes, and graphite nanofibers without any surface pretreatments by self-regulated reduction of sodium n-dodecyl sulfate. As supported by electrochemical measurements, the newly prepared Pd-nanoparticles-decorated carbon nanomaterials are found to have the high activity for oxygen reduction.     

Hydrothermal and plasma nitrided electrospun carbon nanofibers for amperometric sensing of hydrogen peroxide

Microchimica Acta - A fluorometric method is presented for sensitive deternination of microRNA. It is making use of carbon dots (C-dots) loaded with a DNA probe as fluorophore and MnO2 nanosheets...     

Is twin behavior of Nikkei 225 index futures the same?

This study adopts the autoregressive conditional jump intensity (ARJI) model proposed by Chan and Maheu [J. Business Econ. Stat. 20 (2002) 377–389] to investigate the impact of news on SIMEX-Nikkei 225 and CME-Nikkei 225 (regards it as the twins). Empirical results demonstrate that the twins were captured by responses to various events; moreover, the twins have distinct jump intensity and risk. Finally, this investigation evaluates the lead–lag relationship between returns and jump behavior by the Granger causality test. Returns are based on unidirectional causality from two futures (the twins) to spot and feedback causality between the twins. Jump intensity reveal feedback causality between spot and the CME-Nikkei 225 and unidirectional causality from the CME-Nikkei 225 to in SIMEX-Nikkei 225.