ELECTROLYTE FOR PHOTOELECTRIC CONVERSION ELEMENT, AND PHOTOELECTRIC CONVERSION ELEMENT AND DYE-SENSITIZED SOLAR CELL EACH UTILIZING THE ELECTROLYTE

• Main Authors: IMAZAKI YOSHIMASA, MARUYAMA TSUKASA
• Format: Patent
• Language: English; French; Japanese
• Published: 01.07.2010
• 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; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SEMICONDUCTOR DEVICES; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

Disclosed is an electrolyte for a photoelectric conversion element, which can achieve a high energy conversion efficiency even when the electrolyte does not substantially contain iodine.  Also disclosed are a photoelectric conversion element and a dye-sensitized solar cell, each of which utilizes the electrolyte.  Specifically disclosed is an electrolyte for a photoelectric conversion element, which comprises an ionic liquid (A) and a carbon material (B).  In the electrolyte, the carbon material (B) is a carbon material (B1) which has a pH value of 2 to 6 as measured by a pH measurement method in accordance with JIS Z8802 and/or a boron-modified acetylene black (B2), and the content of the carbon material (B) is 10 to 50 parts by mass relative to 100 parts by mass of the ionic liquid (A). L'invention concerne un électrolyte pour un élément de conversion photoélectrique qui permet d'obtenir un fort rendement de conversion d'énergie même lorsque l'électrolyte ne contient pas sensiblement d'iode. Elle concerne aussi un élément de conversion photoélectrique et une cellule solaire sensibilisée aux colorants, dont chacun utilise l'électrolyte. Elle concerne spécifiquement un électrolyte pour un élément de conversion photoélectrique qui comprend un liquide ionique (A) et un matériau au carbone (B). Dans l'électrolyte, le matériau au carbone (B) est un matériau au carbone (B1) dont le pH est compris entre 2 et 6 selon une méthode de mesure du pH conforme à la norme JIS Z8802 et/ou du noir d'acétylène modifié au bore (B2) et la teneur du matériau au carbone (B) est de 10 à 50 parties en masse par rapport à 100 parties en masse du liquide ionique (A).