摘要:
A simple and efficient method for transforming conformation of parts of chains in the amorphous phase in a conjugated polymer to extended conjugation length (termed as β phase) is disclosed. The β phase acts as a dopant and can be termed self-dopant. The generated self-dopant in the amorphous host allows an efficient energy transfer and charge trapping to occur and leads to more balanced charge fluxes and more efficient charge recombination. For example, a polyfluorene film was dipped into a mixed solvent/non-solvent, tetrahydrofuran/methanol in volume ratio of 1:1, to generate a β-phase content up to 1.32%. A polymer light emitting diode with the dipped polyfluorene film as a light emitting layer therein provides a more pure and stable blue-emission (solely from the self-dopant) with CIE color coordinates x+y
摘要翻译:公开了一种用于将共轭聚合物中无定形相的链部分的构象转化为延伸共轭长度(称为β相)的简单而有效的方法。 β相作为掺杂剂,可称为自掺杂。 在非晶主机中产生的自掺杂剂允许发生有效的能量转移和电荷捕获,并导致更平衡的电荷通量和更有效的电荷重组。 例如,将聚芴膜浸入混合溶剂/非溶剂,体积比为1:1的四氢呋喃/甲醇中,以产生高达1.32%的β相含量。 具有浸渍聚芴膜作为发光层的聚合物发光二极管提供具有CIE颜色坐标x + y <0.3和性能3.85cd A-的更纯净和稳定的蓝色发射(仅来自自掺杂物) 1(外部量子效率3.33%)和34326 cd m-2。
摘要:
A circuit board with a quality-indicator mark and a method for indicating quality of the circuit board. The circuit board includes a plurality of circuit board units. A plating bus is formed around each circuit board unit and extended to form a plating trace in an inner-layer circuit structure of each circuit board unit. The inner-layer circuit structure is inspected in quality to maintain or break connection between the plating trace and plating bus if the quality is good or not. At least one circuit structure is formed on the inner-layer circuit structure and electrically connected to the plating trace to form a conductive mark on each circuit board unit. A metal protection layer is formed on the at least one circuit structure via the plating bus, and the conductive mark with the metal protection layer indicates that the inner-layer circuit structure of the circuit board unit is good.
摘要:
A circuit board with a quality-indicator mark and a method for indicating quality of the circuit board. The circuit board includes a plurality of circuit board units. A plating bus is formed around each circuit board unit and extended to form a plating trace in an inner-layer circuit structure of each circuit board unit. The inner-layer circuit structure is inspected in quality to maintain or break connection between the plating trace and plating bus if the quality is good or not. At least one circuit structure is formed on the inner-layer circuit structure and electrically connected to the plating trace to form a conductive mark on each circuit board unit. A metal protection layer is formed on the at least one circuit structure via the plating bus, and the conductive mark with the metal protection layer indicates that the inner-layer circuit structure of the circuit board unit is good.
摘要:
The present invention discloses organometallic complexes with transition metal elements and their application in fabrication of a variety of light-emitting devices. The mentioned organometallic complexes can serve as emitting material or dopant for blue phosphorescent organic light-emitting devices with excellent performance. The mentioned organometallic complexes have a general formula as the following: Wherein M represents a transition metal element, and Q1 and Q2 respectively represent an atomic group forming a nitrogen-containing heterocyclic ring as a five member ring, a six member ring, or a seven member ring.
摘要:
This invention discloses a composite distributed dielectric structure. It comprises one or more conductor layers, one or more dielectric layers distributed on the conductor layers, and one or more conductor traces distributed on the dielectric layers. One or more dielectric plates can be further around the conductor traces. The dielectric layers or plates may or may not have plural dielectric materials therein, respectively described in two embodiments. Each conductor trace lies on a dielectric material without crossing two different dielectric materials. Two or more dielectric layers may be stacked on the conductor layers The invention provides a low cost and practical dielectric structure for interconnect systems to reduce dielectric loss, cross talk, and signal propagation delay and to well control the impedance matching while maintaining proper heat dissipation and noise reduction at high frequency transmission.
摘要:
A method for fabricating a semiconductor a semiconductor device having a stacked-gate structure. A polysilicon layer is formed overlying a substrate, which is insulated from the substrate by a dielectric layer. A metal-flash layer is formed overlying the polysilicon layer, and then a tungsten nitride layer is formed overlying the titanium layer. The tungsten nitride layer is annealed using nitrogen and hydrogen gases. A tungsten layer and a cap layer are successively formed overlying the tungsten nitride layer.
摘要:
A method of forming buried contact holes is described. A layer of silicon oxide is provided overlying a semiconductor substrate. A layer of polysilicon is deposited overlying the silicon oxide layer. The polysilicon layer is covered with a layer of photoresist which is exposed and developed to provide a photoresist mask. The polysilicon layer is etched away where it is not covered by the photoresist mask wherein a polymer buildup is formed on the sidewalls of the polysilicon layer. Ions are implanted into the silicon oxide layer not covered by the photoresist mask. The photoresist mask is removed whereby the polymer buildup is also removed. Thereafter, the silicon oxide layer not covered by the polysilicon layer is etched away to complete the formation of the buried contact hole with reduced polymer buildup in the fabrication of an integrated circuit.