PHOTOELECTRIC CONVERSION ELEMENT AND SOLAR BATTERY

• Main Authors: HORIUCHI TAMOTSU, TANAKA YUJI, KINO TOKUSHIGE, IDE TAKAHIRO, MATSUYAMA TAKESHI, SUZUKI SHIGEYO, KANEI NAOMICHI
• Format: Patent
• Language: English; Japanese
• Published: 19.07.2018
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

PROBLEM TO BE SOLVED: To provide a photoelectric conversion element that is highly efficient and stable for a long period.SOLUTION: A photoelectric conversion element comprises: a first electrode 2; an electron transport layer 4 formed on the first electrode; a charge transfer layer 7; and a second electrode 8. The electron transport layer contains an electron transportable compound carrying compounds represented by the general formulae (1) and (2). In the formulae, Xand Xare an oxygen atom, a sulfur atom, or a selenium atom; Ris a methine group; Ris an alkyl group, an aryl group, or a heterocyclic group; Ris an acidic group which may be the same or different, m represents 1 or 2; Z1 and Z2 are cyclic structures. In the formulae, Ris an aryl group or a heterocyclic group; Ris an alkyl group, an alkoxy group, an alkenyl group, an alkylthio group, or an aryl ether group.SELECTED DRAWING: Figure 1 【課題】高効率で長期安定な光電変換素子を提供する。【解決手段】第１電極２と、その上に形成された電子輸送層４と、電荷移動層７と、第２電極８と、を有し、電子輸送層は、一般式（１）及び（２）で表される化合物を担持した電子輸送性化合物を含む。（式中、Ｘ１及びＸ２は酸素原子、硫黄原子又はセレン原子、Ｒ１はメチン基、Ｒ２はアルキル基、アリール基又はヘテロ環基、Ｒ３は同一でも異なっていてもよい酸性基、ｍは１又は２を表し、Ｚ１及びＺ２は環状構造）（式中、Ｒ４はアリール基又はヘテロ環基、Ｒ５はアルキル基、アルコキシ基、アルケニル基、アルキルチオ基又はアリールエーテル基）【選択図】図１