Provided are a squarylium dye having a carboxyindolenine structure and an N-alkyl substituent, and a photoelectric conversion element having 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 dye-sensitized solar cell uses a compound represented by the formula (1) as the squarylium dye. In the formula (1), R
1
and R
2
represent a substituted or unsubstituted C5 to C30 alkyl group; X represents C(CH
3
)
2
; and A and B represent a carboxy group.
提供一种具有羧基
吲哚啉结构和N-烷基取代基的方酰胺
染料,以及使用该方酰胺
染料制备的在近红外区域具有高光电转换效率的光电转换元件和
染料敏化太阳能电池。光电转换元件或
染料敏化太阳能电池使用代表式(1)所示的化合物作为方酰胺
染料。在式(1)中,R1和R2代表取代或未取代的C5至C30烷基;X代表C(
CH3)2;A和B代表羧基。