摘要:
An electroluminescent element has an anode, a cathode, and an organic layer structure between the two electrodes. The layer structure has a luminescent zone containing 1,9-perinaphtylene-10-1′-naphthylanthracene or derivatives as dopant. The luminescent material utilized as dopant has the following structure called pNNA or pNNA derivatives: Wherein: R1, R2, R3, R4 are individual substituents or a group of substituents, and they may be identical or different. Each substituent is individually selected from the following groups consisting of: H, alkyl (—R), halogen (—X), aryl (—Ar), alkenyl (RCH═CH—), allyl(CH2═CHCH2—), cyano (NC—), isocyano (CN—), amino (H2N—), tertiary amino (R2N—or Ar1Ar2N—), amide (RCONR—), nitro (N2O—), acyl (RCO—), carboxyl (—CO2H), alkoxyl (RO—), alkylsulfonyl (RSO2—), hydroxy (HO—) and single or fused aromatic heterocyclic rings.
摘要:
An amorphous upconversion phosphor comprising barium fluoride a combination of rare-earth fluorides including yttrium and lanthanum and dopants, and a waveguide thereof on a substrate selected to have a refractive index lower than a thin film of the phosphor material or any other substrate with an appropriate buffer layer of lower refractive index that the film wherein infrared radiation and visible light are converted to ultraviolet and visible light. The amorphous upconversion phosphor is deposited at temperatures low enough to permit integration into semiconductor materials.
摘要:
An amorphous upconversion phosphor comprising barium fluoride a combination of rare-earth fluorides including yttrium and lanthanum and dopants, and a waveguide thereof on a substrate selected to have a refractive index lower than a thin film of the phosphor material or any other substrate with an appropriate buffer layer of lower refractive index that the film wherein infrared radiation and visible light are convened to ultraviolet and visible light The amorphous upconversion phosphor is deposited at temperatures low enough to permit integration into semiconductor materials.
摘要:
A low-voltage organic light-emitting device has a light-transmissive hole-injecting electrode on a light-transmissive substrate, and formed over the hole-injecting electrode, in sequence, an organic hole-transporting layer, an organic light-emitting layer, a bi-layer interfacial structure, an electron-transporting layer having an electron affinity higher than an electron affinity of the light-emitting layer, and an electron-injecting electrode. The bi-layer interfacial structure provides effective electron transport from the electron-transporting layer to the light-emitting layer.
摘要:
An organic light-emitting device capable of reducing ambient-light reflection from a cathode includes a light-transmissive substrate, a light-transmissive anode, an organic hole-transporting layer, and an organic electron transporting layer. A reflection-reducing structure disposed between the electron-transporting layer and a light-reflective cathode is capable of providing electron injection into the electron-transporting layer and of substantially reducing reflection of ambient-light entering the device.
摘要:
Fluorination can be used to neutralize transition metal impurities in Si. Fluorine is incorporated into the near-surface region of Si by implantation or annealing in a fluorine containing ambient. Thermal treatments at appropriate temperatures are used to initiate the interdiffusion and reaction between fluorine and metal contaminants. The impurities readily react with fluorine to form a compound or complex, thus significantly reducing the number of mid-gap impurities.
摘要:
A multilayer structure is disclosed which includes a single crystal semiconductor substrate. On the substrate is an epitaxial buffer layer, and on the buffer is an epitaxial fluoride outer layer exhibiting upconversion excitation upon red or infrared irradiation.
摘要:
A thin non-conductive fluorocarbon polymer layer is advantageously used in electroluminescent devices. The polymer is produced by plasma polymerization of a fluorocarbon gas in a RF plasma
摘要:
An amorphous upconversion phosphor comprising barium fluoride a combination of rare-earth fluorides including yttrium and lanthanum and dopants, and a waveguide thereof on a substrate selected to have a refractive index lower than a thin film of the phosphor material or any other substrate with an appropriate buffer layer of lower refractive index that the film wherein infrared radiation is converted into visible or visible and ultra violet light. The amorphous upconversion phosphor is deposited at temperatures low enough to permit integration into semiconductor materials.
摘要:
An electrode in contact with a n-type semiconductor for use in an electronic or optoelectronic device is disclosed. The electrode includes a non-conducting layer contacting the semiconductor; a conductive layer contacting the non-conducting layer, and the materials and the thickness of the non-conducting layer being selected so that the bilayer forms a low-resistance contact to the semiconductor, the bilayer providing stability against atmospheric corrosion.