Solar cell

摘要

A solar cell with an electrode lead-out structure that a unitary cell to be easily mounted on and removed from a connection side substrate is provided. A solar cell has a power generation electrode including a transparent electrode, a collector electrode, and a power generation layer formed on a translucent substrate and is arranged opposite an opposite electrode so that the power generation layer is sandwiched between the power generation electrode and the opposite electrode. A through-hole is formed in a substantially central portion of the translucent substrate. Another through-hole is formed in another substrate and its periphery forms an annular exposed portion that does not overlap the opposite electrode. A lead-out portion for the collector electrode is formed on the exposed portion. Metal thin films are connected together to form lead-out portions. Thus, a positive electrode and a negative electrode are led out in the same direction.

主权项

1. A solar cell comprising:
a power generation layer arranged between a first electrode and a second electrode, the first and second electrodes being stacked and at least one of the first and second electrodes being translucent, characterized in that: a first through-hole penetrating through the first electrode is formed, a second through-hole which is different from the first through-hole in size and which penetrates through the second electrode is formed at a position corresponding to the first through-hole such that the first through-hole and the second through-hole are at least partially aligned, wherein an inner wall surface of the first electrode surrounds the first through-hole and an inner wall surface of the second electrode surrounds the second through-hole, and a peripheral surface extending around a smaller one of the first or second through-holes is exposed through the other of the first and second through-holes without the power generation layer being exposed, a first electrode lead-out terminal is provided around the first through-hole on the peripheral surface to allow the first electrode to be led out in a first direction through the first or second through-hole, and a second electrode lead-out terminal is provided around the second through-hole to allow the second electrode to be led out in the first direction in which the first electrode is led out, such that both the first electrode and the second electrode are led out in the same direction wherein the power generation layer is a porous semiconductor layer contacting the first electrode, and wherein the power generation layer is a dye-sensitized photovoltaic power generation layer carrying a dye on a surface thereof.