نتایج جستجو برای: electroluminescence
تعداد نتایج: 1624 فیلتر نتایج به سال:
Abstract Proportional electroluminescence (EL) is the physical effect used in two-phase dark matter detectors, to optically record gas phase ionization signal produced by particle scattering liquid phase. In our previous works presence of a new EL mechanism noble gases, namely that neutral bremsstrahlung (NBrS), was demonstrated both theoretically and experimentally, addition ordinary due excim...
Visible nanocrystal-based light-emitting diodes (LEDs) are about to become commercially available. However, their infrared counterparts suffer from two key limitations. First, III–V semiconductor technologies strong competitors. Second, potential for operation beyond 1.7 µm remains unexplored. The range 1.5 4 corresponds a technological gap in which the efficiency of interband quantum-well-base...
By simply doping the conventional light-emitting polymer F8BT with a helically chiral aromatic molecule, it is shown that substantial levels of CP-electroluminescence can be generated directly. Both photoluminescent and electroluminescent emission from the polymer are observed to become circularly polarized, with the sign of the CP emission directly determined by the handedness of the dopant.
The first tetra-substituted non-fused chrysene, 3,6,9,12-tetrakis(4-tert-butylphenyl)chrysene with blue electroluminescence at 450 nm, and with a radiance of 500 cd m(-2), was synthesized by a two-step procedure: direct bromination of chrysene in trimethyl phosphate, followed by palladium-catalyzed cross-coupling of tetrabromochrysene and tert-butylphenylboronic acid .
The preparation of highly efficient perovskite nanocrystal light-emitting diodes is shown. A new trimethylaluminum vapor-based crosslinking method to render the nanocrystal films insoluble is applied. The resulting near-complete nanocrystal film coverage, coupled with the natural confinement of injected charges within the perovskite crystals, facilitates electron-hole capture and give rise to a...
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