摘要:
A method of fabricating a solar cell includes steps of: forming an amorphous carbon layer, an AlN layer and a first n-type nitride semiconductor layer on the surface of the graphite substrate, forming a mask layer with a plurality of openings on the first n-type nitride semiconductor layer; forming a plurality of second n-type nitride semiconductor layers on the portions of the first n-type nitride semiconductor layer which are exposed by the plurality of openings; forming a plurality of light absorption layers on the plurality of second n-type nitride semiconductor layers; forming a plurality of p-side nitride semiconductor layers on the plurality of the light absorption layers; forming a p-side electrode; and forming an n-side electrode.
摘要:
A film structure (carbon material-insulating film structure) of the present invention includes a carbon material and an insulating film disposed on the carbon material and composed of fluorine-added magnesium oxide. The amount of added fluorine in the magnesium oxide is 0.0049 atomic percent or more and 0.1508 atomic percent or less. This film structure facilitates the realization of an electronic device, such as a spin device, which uses a carbon material such as graphene. This film structure is formed, for example, by sputtering using a target containing magnesium oxide and magnesium fluoride.
摘要:
A 2-(N-methyl-N-methanesulfonylamino)pyrimidine compound of the formula (3): [R is a hydrocarbyl group], is prepared by the steps of: (I) reacting an isobutyrylacetate ester with 4-fluorobenzaldehyde and urea in the presence of a protonic compound and a metal salt; (II) oxidizing the reaction product of the step (I); (III) reacting the oxidation product of the step (II) with an organic sulfonyl halide or an organic sulfonyl anhydride; and (IV) reacting the reaction product of the step (III) with N-methyl-N-methanesulfonamide.
摘要:
A polarization switching/variable directivity antenna according to the present invention includes a ground conductor plate 12 on a surface of a dielectric substrate 11, and has a radiation element 13, a directivity switching element 15, and polarization switching elements 16 provided on the ground conductor plate 12 side of the dielectric substrate 11. The radiation element 13 includes a first slot 17a formed by removing a loop-like portion from the ground conductor plate 12. The directivity switching element 15 includes a second slot 17b formed by removing a loop-like portion from the ground conductor plate 12 and directivity switching switches 18. The polarization switching elements 16 includes a third slot 17c formed by removing a linear-shaped portion from the ground conductor plate 12 and polarization switching switches 19a to 19d. Through control of the directivity switching switches 18, switching of a maximum gain direction of radiation directivity of the antenna is realized. Through control of the polarization switching switches 19a to 19d, switching of a rotation direction of a circularly polarized wave which is emitted from the antenna can be realized.
摘要:
Disclosed are a pyrimidine or triazine compound represented by the following formula (I): ##STR1## wherein R.sup.1 represents cyano group, a halogen atom, hydroxy group or --O--R.sup.7 where R.sup.7 represents a lower alkyl group, a lower alkenyl group, a lower alkynyl group, a halo-lower alkyl group or a cyano-lower alkyl group; R.sup.2 represents hydrogen atom or a lower alkyl group; R.sup.3 represents hydrogen atom or a lower alkyl group; R.sup.4 represents a 1-imidazolyl group, --NHSO.sub.2 --R.sup.8 where R.sup.8 represents a lower alkyl group or a phenyl group which may have a substituent, hydroxy group, a lower alkoxy group or a benzyloxy group when Z is nitrogen atom; or a 1-imidazolyl group, --NHSO.sub.2 --R.sup.8 where R.sup.8 has the same meaning as defined above, hydroxy group, OK, a lower alkoxy group which may have a substituent, a lower alkenyloxy group, a lower alkynyloxy group, a cycloalkoxy group which may have a substituent, a phenoxy group, a benzyloxy group, a lower alkylthio group, a phenylthio group or an alkylsulfonylamino group when Z is --CH.dbd. group; R.sup.5 represents a lower alkoxy group; R.sup.6 represents a lower alkoxy group or a lower alkyl group; X represents oxygen atom or sulfur atom; and Z represents nitrogen atom or --CH.dbd. group. processes for preparing the same and a herbicide containing the same as an active ingredient(s).
摘要:
The present invention relates to a process for preparing a 3-substituted thiophene represented by the formula (2): wherein R represents a cyano group, a formyl group, a carboxyl group, a hydrocarbyloxycarbonyl group which may have a substituent(s) or an acyl group which may have a substituent(s), which comprises reacting a vinyl compound represented by the formula (1): RCH═CHY (1) wherein R has the same meaning as defined above, and Y represents a leaving group, and an α-mercaptoacetaldehyde or a multimer thereof.
摘要:
Disclosed is a method for preparing 2-mercaptothiazole, which comprises adding a dithiocarbamate salt represented by the formula (1): ##STR1## wherein M is a cation, to a chloroacetaldehyde solution in the presence of an acid.
摘要:
Methyl (3R,6E)-3-�(tert-butyldimethylsilyl)oxy!-7-�2',6'-diisopropyl-4'-(4"-fluorophenyl)-5'-(methoxymethyl)pyridin-3'-yl!-5-oxy-6-heptenoate or other 3-oxy-5-oxo-6-heptenoic acid derivative is prepared by the reaction of an aromatic aldehyde and an oxyglutaric acid derivative in an aliphatic alcohol containing a small amount of water in the presence of an alkali metal carbonate or hydrogen carbonate.
摘要:
Disclosed are a pyrimidine or triazine compound represented by the following formula (I): ##STR1## wherein R.sup.1 represents cyano group, a halogen atom, hydroxy group or --O--R.sup.7 where R.sup.7 represents a lower alkyl group, a lower alkenyl group, a lower alkynyl group, a halo-lower alkyl group or a cyano-lower alkyl group; R.sup.2 represents hydrogen atom or a lower alkyl group; R.sup.3 represents hydrogen atom or a lower alkyl group; R.sup.4 represents a 1-imidazolyl group, --NHSO.sub.2 --R.sup.8 where R.sup.8 represents a lower alkyl group or a phenyl group which may have a substituent, hydroxy group, a lower alkoxy group or a benzyloxy group when Z is nitrogen atom; or a 1-imidazolyl group, --NHSO.sub.2 --R.sup.8 where R.sup.8 has the same meaning as defined above, hydroxy group, OK, a lower alkoxy group which may have a substituent, a lower alkenyloxy group, a lower alkynyloxy group, a cycloalkoxy group which may have a substituent, a phenoxy group, a benzyloxy group, a lower alkylthio group, a phenylthio group or an alkylsulfonylamino group when Z is --CH.dbd. group; R.sup.5 represents a lower alkoxy group; R.sup.6 represents a lower alkoxy group or a lower alkyl group; X represents oxygen atom or sulfur atom; and Z represents nitrogen atom or --CH.dbd. group.processes for preparing the same and a herbicide containing the same as an active ingredient(s).
摘要:
Disclosed is a process for the preparation of a 5-hydroxy-3-ketoester derivative of the formula: ##STR1## in which R.sup.1 represents an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group, and R.sup.2 represents an alkyl group or an aryl group, which comprises causing the reaction of an aldehyde compound of the formula R.sup.1 CHO in which R.sup.1 has the meanings as defined above and diketene in the presence of a metal compound selected from a titanium or aluminum compound having at least one group of --OR.sup.3 in which R.sup.3 represents an alkyl group or an aryl group. Further, a process for the preparation of an optically active substance of the 5-hydroxy-3-ketoester derivative causing the reaction of the above compounds in the presence of the metal compound and optically active Schiff base or a complex compound obtained by reacting the metal compound with the optically active Schiff base, also is disclosed.