Panasonic Intellectual Property Management Co., Ltd.

Tomoyasu Yokoyama

Taisuke Matsui

Yu Nishitani

Michio Suzuka

Kenji Kawano

Ryosuke Kikuchi

Shohei Kusumoto

Yumi Miyamoto

Satoru Ohuchi

Yuta Sugimoto

Toshiro Kume

Takeyuki Sekimoto

Fumiyasu Oba

Yu Kumagai

Yoshiko Miyamoto

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.

Solar cell

A solar cell according to the present disclosure includes a first electrode, a second electrode, a photoelectric conversion layer disposed between the first electrode and the second electrode, and an electron transport layer disposed between the first electrode and the photoelectric conversion layer. At least one electrode selected from the group consisting of the first electrode and the second electrode has a light-transmitting property. The photoelectric conversion layer contains a perovskite compound composed of a monovalent cation, a divalent cation, and a halogen anion. The electron transport layer contains a metal oxynitride having electron conductivity. The metal oxynitride has an electrical conductivity of greater than or equal to 1×10S/cm.

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.

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 semiconductor 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, and the semiconductor layer contains a compound containing Na, Zn, and O.

Provided is a solar cell including a first electrode, a second electrode, a light-absorbing layer located between the first electrode and the second electrode, and an intermediate layer located between the light-absorbing layer and at least one electrode selected from the group consisting of the first electrode and the second electrode. The light-absorbing layer contains a perovskite compound represented by a chemical formula ASnX(where A is a monovalent cation and X is a halogen anion). The intermediate layer is in contact with the light-absorbing layer. The at least one electrode selected from the group consisting of the first electrode and the second electrode has light-transmissive property. The intermediate layer contains at least one selected from the group consisting of (4-(1',5&#x2032;-dihydro-1&#x2032;-methyl-2&#x2032;H-[5,6]fullereno-C60-Ih[1,9-c]pyrrol-2&#x2032;-yl)benzoic acid) and fullerene C60.

A light-absorbing material contains a compound represented by the composition formula HC(NH)SnIand having a perovskite structure. A solid-stateH-NMR spectrum, which is obtained byH-N HMQC measurement in two-dimensional NMR at 25&#xb0; C., of the compound includes a first peak at 6.9 ppm and a second peak at 7.0 ppm. A peak intensity of the first peak is equal to 80% or more of a peak intensity of the second peak.

Light-absorbing material containing compound with perovskite structure and solar cell including the same

The present disclosure provides a photoabsorber containing:

Photoabsorber and solar cell comprising the same

An all-solid-state lithium-ion secondary battery includes a cathode active material, an anode active material, a solid electrolyte between the cathode and anode active materials, and an intermediate layer between the solid electrolyte and the cathode active material. The cathode and anode active materials are able to store and release a lithium ion. The solid electrolyte has lithium ion conductivity. The intermediate layer is constituted of elements including all elements constituting the cathode active material. A lithium ion in the intermediate layer is less ionic than that in the cathode active material.

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Osaka, Japan

Tomoyasu Yokoyama