The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 2026
Filed:
Aug. 03, 2022
Semiconductor Energy Laboratory Co., Ltd., Atsugi, JP;
Yasuhiro Niikura, Tokyo, JP;
Daisuke Kubota, Atsugi, JP;
Taisuke Kamada, Niiza, JP;
Sachiko Kawakami, Atsugi, JP;
Anna Tada, Isehara, JP;
Satoshi Seo, Sagamihara, JP;
Semiconductor Energy Laboratory Co., Ltd., Atsugi, JP;
Abstract
A novel photoelectric conversion device that is highly convenient, useful, or reliable is provided. A photoelectric conversion device (S) includes a first electrode (S), a second electrode (S), and a unit (S); the unit (S) is interposed between the first electrode (S) and the second electrode (S); the unit (S) includes a first layer () and a second layer (S); and the first layer () is interposed between the second electrode (S) and the second layer (S). The first layer () contains a first organic compound ETM, the first organic compound ETM has an electron-transport property, and the first organic compound ETM has a LUMO level in a first level LUMO1. The second layer (S) contains a second organic compound CTM, the second organic compound CTM emits delayed fluorescent light at room temperature, and the second organic compound CTM has a LUMO level in a second level LUMO2. A difference between the second level LUMO2 and the first level LUMO1 is less than or equal to 1.0 eV.