nanotubos--- pueden duplicar la eficencia de celdas solares fotoelectroquimicas

creo que esta muy abandonado esto... asi que posteare aqui hoy n.n

bueno... la verdad me da flojera pasarlo a español, asi que mejor les dejo la noticia en ingles. hehehhe


The photocatalytic activity of nanostructured semiconductor films has been widely explored in designing solar cells, solar hydrogen production, and environmental remediation. Of particular interest is the dye-sensitized solar cell (DSSC) which uses nanostructured titanium dioxide films modified with sensitizing dyes. Despite the initial success of achieving 10% solar conversion efficiency, the effort to further improve their performance has not been very successful. A major hurdle in attaining higher photoconversion efficiency in such nanostructured electrodes is the transport of electrons across the particle network.

The photogenerated electrons in nanostructured films for example have to travel through the network of semiconductor particles and encounter many grain boundaries during the transit. Such a random transit path for the photogenerated electrons increases the probability of their recombination with oxidized sensitizer. With the recent advance in the design of nanotube and nanowire architecture, it should be possible to use such one-dimensional nanostructures to direct the flow of photogenerated charge carriers.

The obvious challenge is to use nanowire or nanotube networks as support to anchor light-harvesting semiconductor particles and facilitate the electron transport to the collecting electrode surface in a solar cell. Researchers now have demonstrated that single wall carbon nanotube (SWCNT) architecture when employed as conducting scaffolds in a titanium dioxide semiconductor based photoelectrochemical cell can boost the photoconversion efficiency by a factor of 2.


http://www.nanotech-now.com/news.cgi?story_id=20810

esta pagina tiene un chorro de noticias diarias... lo cual se me hace un poco dudoso porke son cuarto para las ocho (asi es... casi una hora antes de la clase) y ya hay mas de 10 articulos para el dia de hoy....

que clase de persona se levanta TAN temprano para publicar todo eso!?!?
alguien que no tiene nada que hacer?!!?
acaso sere yo asi!?!?
oh no!!!
creo que soy asi por estar en el blog ahorita!!!

T-T