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公开(公告)号：US12142443B2
公开(公告)日：2024-11-12
申请号：US17660214
申请日：2022-04-22
Inventor： Shohei Kusumoto , Kenji Kawano , Tomoyasu Yokoyama
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.
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公开(公告)号：US11737291B2
公开(公告)日：2023-08-22
申请号：US17471708
申请日：2021-09-10
Inventor： Tomoyasu Yokoyama , Yu Nishitani , Shohei Kusumoto , Yumi Miyamoto
IPC: H10K30/10 , H10K30/81 , H10K102/00
CPC classification number: H10K30/10 , H10K30/81 , H10K2102/00
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.
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公开(公告)号：US11387051B2
公开(公告)日：2022-07-12
申请号：US16366277
申请日：2019-03-27
Inventor： Shohei Kusumoto
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.
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公开(公告)号：US11133425B2
公开(公告)日：2021-09-28
申请号：US16377917
申请日：2019-04-08
Inventor： Shohei Kusumoto
IPC: H01L31/0224 , H01L51/44
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.
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