Dye-sensitized solar cell element

A dye-sensitized solar cell element comprising at least one dye-sensitized solar cell,

• wherein each of the at least one dye-sensitized solar cell includes:
• a first base material including a transparent substrate;
• a second base material having a first surface which faces the first base material and a second opposite surface;
• an annular sealing portion which bonds the first base material and the second base material;
• and
• an oxide semiconductor layer which is provided between the first base material and the second base material,
• wherein the second base material has flexibility,
• wherein the second base material includes an annular bonding edge portion and a main body portion, the annular bonding edge portion including a bonding surface facing the first base material and directly bonded to the sealing portion, and
• wherein the main body portion has a first portion and a second portion, the first portion and the second portion having flexibility,
• the first portion is a convex bending portion which is convex along the second surface such that a first height being a height from the first base material to the first portion along the second surface is greater than a second height being a height from the first base material to the second portion along the second surface;
• wherein a third height being a height from the first base material to the edge portion along the second surface is greater than the second height.