Dye-sensitized solar cell

Abstract

The invention provides a dye-sensitized solar cell. The internal of a tubular light-transmitting container with seals at two ends is provided with an optical electrode composed of a semiconductor layer carrying sensitizing dye, a collector electrode formed in contact with the optical electrode, and an opposed electrode opposite to the collector electrode. In the dye-sensitized solar cell with the internal of the tubular container filled with electrolyte, a predetermined gap is maintained between the opposed electrode and the collector electrode to prevent short-circuit, so that good power generation efficiency is obtained. The dye-sensitized solar cell is characterized in that the opposed electrode is formed into a substantially cylinder shape, and includes a metal plate having an elastic restoring force in the radius direction, and the opposed electrode elastically abuts against the collector electrode or the optical electrode in a manner that the periphery of the opposed electrode is clamped by insulators.

Description

technical field [0001] The present invention relates to a dye-sensitized solar cell (dye-sensitized solar cell, DSSC) that converts light energy into electrical energy, and in particular relates to a light-transmitting tubular container that is provided with a collector electrode, a photoelectrode, and a counter electrode and encapsulated Electrolyte for dye-sensitized solar cells. Background technique [0002] Conventionally, solar cells that convert sunlight energy into electric energy are environmentally friendly, and active research and development is underway as a clean energy source. In particular, since the photoelectric conversion efficiency is high, dye-sensitized solar cells have attracted attention as low-cost solar cells, and various proposals have been made. [0003] One example is Japanese Patent No. 4840540 (Patent Document 1). In this dye-sensitized solar cell, an electrolytic solution is sealed in a light-transmitting tubular container, and a collector elec...

AI Technical Summary

Problems solved by technology

[0010] In this prior art, since both ends of the coil-shaped counter electrode 26 are held only by the sealing portions 22 and 23 of the tubular container 20, it is difficult to maintain a regular relationship between the counter electrode 26, the photoelectrode 25, and the collector electrode 24. In addition, the opposite electrode 26 is easily deformed. After the deformation, the positional relationship between the opposite electrode 26 and the photoelectrode 25-collector 24 changes, and there is a defect that the predetermined gap cannot be maintained, thereby reducing the power generation efficiency.

[0011] Moreover, when the deformation of the counter electrode 26 is large, the counter electrode 26 will eventually come into contact with the photoelectrode 25-collector 24 and short-circuit, resulting in a problem that power generation cannot be performed.

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