DYE-SENSITIZED SOLAR CELL, PHOTOELECTRIC CONVERSION ELEMENT, AND DYE FOR USE IN THE SOLAR CELL AND THE ELEMENT

摘要

Disclosed is a squarylium dye having a carboxyindolenine structure and an N-alkyl substituent. Also disclosed are a photoelectric conversion element having a high photoelectric conversion efficiency in a near-infrared region and a dye-sensitized solar cell, both of which are produced using the squarylium dye. The photoelectric conversion element or the dye-sensitized solar cell utilizes a compound represented by formula (1) as the squarylium dye. In formula (1), R1 and R2 independently represent a substituted or unsubstituted C5-C30 alkyl group; X represents C(CH3)2; and A and B represent a carboxy group.