A group of researchers from the Graduate School of Life Science and Systems Engineering of the Kyushu Institute of Technologyhave developed a “fiber-type TCO-less dye sensitized solar cell,” whichcould generate electricity from the light signals transmitted byoptical fibers. Composed of dye sensitized solar cells layersconcentrically formed around a glass rod with a diameter of 9 mm, thecells convert the light entering from one end of the glass rod intoelectricity if the incident light is at an angle that doesn’t result intotal internal reflection.
The cells aremade with a layer of titanium oxide and a sensitizing pigment, with aporous titanium layer serving as the anode and a layer of platinum andtitanium serving as the cathode. Presently the cells have a conversionefficiency of 1% using a single type of pigment.
The Dark Side:
Withthe present technology the efficiency is just 1%, which is beingconsidered good due to the small size of the prototype. However, evenwith larger fiber, the researchers aren’t expecting a conversionefficiency of more than 10%, which is due to the amount of energythat’s wasted.
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