A much celebrated nanostructured device is a new class of solar cells discovered in 1991 by Michael Grätzel solar cell nanostructured titanium dioxide illustrates several characteristic features of nanoscale devices. Is formed with titanium dioxide nanoparticles (small sphere gray figure), an abundant material and nontoxic. The nanostructure of these little sphere gray, multiplied by a factor of 1000 the area in which a dye absorbed on the surface (small sphere violet) can be photoexcited and generate photocurrent, with an efficiency of converting light to electricity of 10%. Simulates artificial photosynthesis that takes place in plants. For now, this device is limited by stability problems. Overall control of physicochemical processes at interfaces is a key to the success of nanoscale devices.
Information from:
http://www.elp.uji.es/paperspdf/2005% 20almacen% 20energia.pdf
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