摘要:
In a heterojunction FET in which source and drain areas are formed by carrying out high temperature annealing process after carrying out ion implantation in areas to be formed into source and drain areas, conventionally, the N-type carrier supply layer and the N-type active layer are doped with Si. In place of doping with Si, doping with Se or Te is adopted. Thereby, in high temperature annealing process for activating the ion implanted areas, which serves as source and drain areas, unlike the Si donor, inactivation of donor due to reaction with F-atoms occurs scarcely with respect to the diffusion of F-atoms on the surface of the epitaxial substrate, which adhered during the process. Further, since the Se and Te are impurities from VI-family, when the Se or Te occupies any grid position of atoms from III-family or V-family, the Se or Te serves as the donor. Accordingly, a high performance heterojunction FET of little deterioration of the FET characteristics can be obtained.
摘要:
There is provided a novel production method of a chlorinated hyperbranched polymer that is optically stable and is capable of derivatizing the chlorinated hyperbranched polymer into various compounds. A production method of a chlorinated hyperbranched polymer for producing a chlorinated hyperbranched polymer of Formula (1): {where X is a chlorine atom; R1 is a hydrogen atom or a methyl group; and A1 is a phenylene-alkylene group, n is the number of repeating unit structures and is an integer of 2 to 100,000}, comprising the step of substituting a dithiocarbamate group of a hyperbranched polymer of Formula (3): (where R1, A1, and n are the same as defined in Formula (1); and each of R2 and R3 is a C1-5 alkyl group, a C1-5 hydroxyalkyl group, or a C7-12 arylalkyl group, or R2 and R3 optionally form a ring together with a nitrogen atom bonded to R2 and R3) with a chlorine atom using sulfuryl chloride.
摘要:
Disclosed is a method for the formation of multi-layer paint films with the omission of a mid-coat paint coating process. The method comprises the use of a particular aqueous colored paint (A) comprising a prescribed amount of specified titanium oxide that has been compounded, The resulting multi-layer paint films have a very bright paint color, and especially a white or light-colored color, and have excellent concealing properties. The aqueous colored paint (A) is characterized by containing from 50 to 60 mass % with respect to the whole paint solid fraction of titanium oxide of specific surface area not more than 13 m2/g.
摘要:
There is provided a metal fine particle dispersant containing a branched polymer compound having an ammonium group. The metal fine particle dispersant of the present invention comprises a branched polymer compound having an ammonium group and having a weight average molecular weight of 500 to 5,000,000. The metal fine particle dispersant has the structure of Formula (1): The present invention also relates to a composition comprising the metal fine particle dispersant and a metal fine particle.
摘要:
To provide a coating composition, which is capable of providing a coating film on a resin part and on a steel plate part at the same time at lower temperatures than conventional coating compositions, and which is capable of providing a coating film that has excellent bending resistance. A clear coating composition, which contains a base material that contains an acrylic polyol, a crosslinking agent that is composed of an active methylene type blocked isocyanate and a melamine resin, and a curing catalyst. The mass ratio of the base material to the melamine resin is 1.5-9.0, and the mass percentage of the active methylene type blocked isocyanate in the composition is set within a specific range when the total of the mass percentage of the base material and the mass percentage of the melamine resin in the composition is taken as 100% by mass.
摘要:
To provide a coating composition, which is capable of providing a coating film on a resin part and on a steel plate part at the same time at lower temperatures than conventional coating compositions, and which is capable of providing a coating film that has excellent bending resistance. A clear coating composition, which contains a base material that contains an acrylic polyol, a crosslinking agent that is composed of an active methylene type blocked isocyanate and a melamine resin, and a curing catalyst. The mass ratio of the base material to the melamine resin is 1.5-9.0, and the mass percentage of the active methylene type blocked isocyanate in the composition is set within a specific range when the total of the mass percentage of the base material and the mass percentage of the melamine resin in the composition is taken as 100% by mass.
摘要:
There is provided a novel production method of a chlorinated hyperbranched polymer that is optically stable and is capable of derivatizing the chlorinated hyperbranched polymer into various compounds. A production method of a chlorinated hyperbranched polymer for producing a chlorinated hyperbranched polymer of Formula (1): {where X is a chlorine atom; R1 is a hydrogen atom or a methyl group; and A1 is a phenylene-alkylene group, n is the number of repeating unit structures and is an integer of 2 to 100,000}, comprising the step of substituting a dithiocarbamate group of a hyperbranched polymer of Formula (3): (where R1, A1, and n are the same as defined in Formula (1); and each of R2 and R3 is a C1-5 alkyl group, a C1-5 hydroxyalkyl group, or a C7-12 arylalkyl group, or R2 and R3 optionally form a ring together with a nitrogen atom bonded to R2 and R3) with a chlorine atom using sulfuryl chloride.
摘要:
A method equalizes and decodes a received signal including a sequence of symbols. Subsequences of the signal are selected, wherein the subsequences are overlapping and time shifted. For each subsequence, statistics of the channel corresponding to a pattern in the subsequence are selected, wherein the statistics include high-order statistics. A transmitted signal corresponding to the received signal is then estimated based on the statistics.
摘要:
A heterojunction bipolar transistor comprises a collector layer, a base layer formed on the collector layer and an emitter layer formed on the base layer. The emitter layer includes a first semiconductor layer covering the entire top surface of the base layer and a second semiconductor layer formed on a predetermined part of the first semiconductor layer. An inactivated region is formed, by ion implantation, in a region of the collector layer located below the base layer except for a part thereof corresponding to the second semiconductor layer. The edge of the inactivated region is located away from the edge of the second semiconductor layer, and a region of the first semiconductor layer between the edge of the inactivated region and the edge of the second semiconductor layer is depleted.
摘要:
There is provided a novel, environmentally friendly primer for use in the pretreatment steps in electroless plating, which can be easily used in fewer steps with a lower cost. A primer for forming a metallic plating film on a substrate by electroless plating, the primer including: a hyperbranched polymer having an ammonium group at a molecular terminal and a weight-average molecular weight of 500 to 5,000,000; and a metal fine particle.