Patent ID: 7851699

Claim:
A dye-sensitized solar cell, comprising: a first support; a first conductive layer; a porous photovoltaic layer containing a dye; a carrier transport layer; and a second conductive layer stacked in this order, wherein a length of a contact side of the porous photovoltaic layer adjacent to the first conductive layer is different from that of its confronted side of the porous photovoltaic layer opposite the side adjacent to the first conductive layer, wherein the porous photovoltaic layer is provided with a non-vertical and non-horizontal inclined portion at each end thereof, which extends with substantially a constant incline from the confronted side to the contact side of the porous photovoltaic layer, wherein the porous photovoltaic layer has a thickness that satisfies a condition in which a dimensionless number K represented by the formula: K=Y/ √{square root over ( X 2 + Y 2 )}, is 0.15 or less, and wherein X is a shortest distance between a line perpendicularly drawn from a surface edge of the confronted side of the porous photovoltaic layer to the contact side of the porous photovoltaic layer and a surface edge of the contact side, and Y is a thickness of the porous photovoltaic layer in between two surface edges of the confronted side.