Abstract: The composite active material according to one aspect of the present disclosure includes an active material including Li, Ti, and O and a first solid electrolyte. The active material is a porous material having a plurality of pores. The first solid electrolyte includes Li, M, and X. M is at least one selected from the group consisting of metal elements and metalloid elements belonging to the 5th or 6th period. X is at least one selected from the group consisting of F, Cl, Br, and I. At least a part of the first solid electrolyte is present inside the plurality of pores.

Abstract: An electrode material includes an active material particle and a solid electrolyte particle. The solid electrolyte particle includes Li, M, and X, wherein M is at least one selected from the group consisting of metal elements excluding Li and metalloid elements, and X is at least one selected from the group consisting of F, Cl, Br, and I. The ratio R1 of the volume of the active material particle to the sum of the volume of the active material particle and the volume of the solid electrolyte particle is greater than or equal to 10% and less than 65% when expressed as percentage. The ratio R2 of the average particle diameter of the active material particle to the average particle diameter of the solid electrolyte particle is greater than or equal to 0.5 and less than or equal to 3.4.

Abstract: The electrode material according to one aspect of the present disclosure includes a first active material particle, a second active material particle, and a solid electrolyte. The first active material particle and the second active material particle each include Li, Ti, and O. The ratio of the average particle size of the second active material particle to the average particle size of the first active material particle is greater than or equal to 1.5 and less than or equal to 6.0. The battery according to one aspect of the present disclosure includes a positive electrode, a negative electrode, and an electrolyte layer located between the positive electrode and the negative electrode. At least one selected from the group consisting of the positive electrode and the negative electrode includes the electrode material.

Abstract: A negative-electrode material includes a negative-electrode active material and a solid electrolyte. The negative-electrode active material contains Li, Ti, M1, and O, wherein M1 denotes at least one selected from the group consisting of metal elements and metalloid elements other than Li and Ti. The solid electrolyte contains Li, M2, and X, wherein M2 denotes at least one selected from the group consisting of metal elements and metalloid elements other than Li, and X denotes at least one selected from the group consisting of F, Cl, Br, and I.

Abstract: A battery includes a positive-electrode layer, a negative-electrode layer, and an electrolyte layer between the positive-electrode layer and the negative-electrode layer, wherein the negative-electrode layer includes a negative-electrode active material and a first solid electrolyte, the electrolyte layer contains a second solid electrolyte, the negative-electrode active material contains Li, Ti, and O, the first solid electrolyte contains a crystalline phase assigned to a monoclinic crystal and contains Li, M1, and X1, wherein M1 denotes at least one of metal elements and metalloid elements other than Li, and X1 denotes at least one of F, Cl, Br, and I, and the second solid electrolyte contains a crystalline phase assigned to a trigonal crystal and contains Li, M2, and X2, wherein M2 denotes at least one of metal elements and metalloid elements other than Li, and X2 denotes at least one of F, Cl, Br, and I.

Abstract: A solar cell according to the present disclosure includes a first electrode, a second electrode, a photoelectric conversion layer located between the first electrode and the second electrode, and a first electron transport layer located between the first electrode and the photoelectric conversion layer, in which at least one selected from the group consisting of the first electrode and the second electrode is translucent, the photoelectric conversion layer contains a perovskite compound composed of a monovalent cation, a Sn cation, and a halogen anion, and the first electron transport layer contains a niobium oxide halide.

Abstract: A solar cell includes a first electrode, a second electrode, a photoelectric conversion layer interposed between the first and second electrodes, and a hole transport layer interposed between the first electrode and the photoelectric conversion layer. At least one electrode selected from the group consisting of the first and second electrodes is transparent to light. The photoelectric conversion layer includes a perovskite compound constituted by a monovalent cation, a divalent cation, and a halogen anion. The monovalent cation includes at least one selected from the group consisting of a formamidinium cation and a methylammonium cation. The divalent cation includes a Sn cation. The halogen anion includes an iodide ion. The hole transport layer includes 4,4?,4?-tris[9,9-dimethyl-2-fluorenyl(4-methoxy-phenyl)amino]triphenylamine.

Abstract: Provided is a solar cell comprising a first electrode, a second electrode, a light-absorbing layer located between the first electrode and the second electrode, and an electron transport layer located between the first electrode and the light-absorbing layer. At least one electrode selected from the group consisting of the first electrode and the second electrode has light-transmissive property. The light-absorbing layer contains a perovskite compound represented by a chemical formula ASnX3 (where A is a monovalent cation and X is a halogen anion). The electron transport layer contains an electron transport material including Ti and Zn. A difference between energy levels of lower ends of conduction bands of the electron transport material and the perovskite compound is less than 0.42 eV.

Abstract: A solar cell according to the present disclosure includes a first electrode, a second electrode, a photoelectric conversion layer located between the first electrode and the second electrode, and a first electron transport layer located between the first electrode and the photoelectric conversion layer, in which at least one selected from the group consisting of the first electrode and the second electrode is translucent, the photoelectric conversion layer contains a perovskite compound composed of a monovalent cation, a Sn cation, and a halogen anion, and the first electron transport layer contains a niobium oxide halide.

Abstract: Provided is a solar cell, comprising a first electrode having a light-transmissive property, a second electrode, a light-absorbing layer located between the first electrode and the second electrode, and an intermediate layer located between the first electrode and the light-absorbing layer. The light-absorbing layer contains a fluorine compound and a perovskite compound which is represented by a chemical formula ASnX3 (where A is a monovalent cation and X is a halogen anion). The intermediate layer contains at least one selected from the group consisting of a metal oxide, a metal sulfide, a metal chalcogenide, and a metal nitride. An upper surface of the intermediate layer is in contact with a lower surface of the light-absorbing layer. A molar ratio of fluorine atoms to the perovskite compound is not less than 49% at an interface between the light-absorbing layer and the intermediate layer.

Abstract: A multilayer electronic component includes: a multilayer stack including a plurality of dielectric layers and a plurality of conductor layers stacked together; a plurality of terminals integrated with the multilayer stack; and a shield formed of a conductor and integrated with the multilayer stack. The multilayer stack has a top surface, a bottom surface, and four side surfaces connecting the top surface and the bottom surface. The plurality of terminals are provided on the bottom surface of the multilayer stack. The shield entirely covers the top surface and the four side surfaces of the multilayer stack. The shield includes a portion that is thicker than the other portions of the shield.

Abstract: A multilayer electronic component includes: a multilayer stack including a plurality of dielectric layers and a plurality of conductor layers stacked together; a plurality of terminals integrated with the multilayer stack; and a shield formed of a conductor and integrated with the multilayer stack. The multilayer stack has a top surface, a bottom surface, and four side surfaces connecting the top surface and the bottom surface. The plurality of terminals are provided on the bottom surface of the multilayer stack. The shield entirely covers the top surface and the four side surfaces of the multilayer stack. The shield includes a portion that is thicker than the other portions of the shield.

Abstract: A multilayer electronic component includes: a multilayer stack including a plurality of dielectric layers and a plurality of conductor layers stacked together; a plurality of terminals integrated with the multilayer stack; and a shield formed of a conductor and integrated with the multilayer stack. The multilayer stack has a top surface, a bottom surface, and four side surfaces connecting the top surface and the bottom surface. The plurality of terminals are provided on the bottom surface of the multilayer stack. The shield entirely covers the top surface and the four side surfaces of the multilayer stack. The shield includes a portion that is thicker than the other portions of the shield.

Abstract: Provided is a solar cell, comprising a first electrode having a light-transmissive property, a second electrode, a light-absorbing layer located between the first electrode and the second electrode, and an intermediate layer located between the first electrode and the light-absorbing layer. The light-absorbing layer contains a fluorine compound and a perovskite compound which is represented by a chemical formula ASnX3 (where A is a monovalent cation and X is a halogen anion). The intermediate layer contains at least one selected from the group consisting of a metal oxide, a metal sulfide, a metal chalcogenide, and a metal nitride. An upper surface of the intermediate layer is in contact with a lower surface of the light-absorbing layer. A molar ratio of fluorine atoms to the perovskite compound is not less than 49% at an interface between the light-absorbing layer and the intermediate layer.

Abstract: Provided is a solar cell comprising a first electrode, a second electrode, a light-absorbing layer located between the first electrode and the second electrode, and an electron transport layer located between the first electrode and the light-absorbing layer. At least one electrode selected from the group consisting of the first electrode and the second electrode has light-transmissive property. The light-absorbing layer contains a perovskite compound represented by a chemical formula ASnX3 (where A is a monovalent cation and X is a halogen anion). The electron transport layer contains an electron transport material including Ti and Zn. A difference between energy levels of lower ends of conduction bands of the electron transport material and the perovskite compound is less than 0.42 eV.

Abstract: A multilayer electronic component includes: a multilayer stack including a plurality of dielectric layers and a plurality of conductor layers stacked together; a plurality of terminals integrated with the multilayer stack; and a shield formed of a conductor and integrated with the multilayer stack. The multilayer stack has a top surface, a bottom surface, and four side surfaces connecting the top surface and the bottom surface. The plurality of terminals are provided on the bottom surface of the multilayer stack. The shield entirely covers the top surface and the four side surfaces of the multilayer stack. The shield includes a portion that is thicker than the other portions of the shield.

Abstract: A multilayer electronic component includes a stack and a balun. The stack includes a plurality of stacked dielectric layers and conductor layers. The balun is formed using the stack. The balun includes an unbalanced transmission line and first to fourth balanced transmission lines. The unbalanced transmission line includes a first line portion and a second line portion connected in series. The first and second balanced transmission lines are configured to be electromagnetically coupled to the first line portion. The third and fourth balanced transmission lines are configured to be electromagnetically coupled to the second line portion.

Abstract: A multilayer electronic component includes a stack and a balun. The stack includes a plurality of stacked dielectric layers and conductor layers. The balun is formed using the stack. The balun includes an unbalanced transmission line and first to fourth balanced transmission lines. The unbalanced transmission line includes a first line portion and a second line portion connected in series. The first and second balanced transmission lines are configured to be electromagnetically coupled to the first line portion. The third and fourth balanced transmission lines are configured to be electromagnetically coupled to the second line portion.