U.S. carbon nanotubes to create highly efficient solar cells
Cornell University researchers have used carbon nanotubes to replace the traditional silicon tube, to create a highly efficient solar cells.
The key is to use this technology to replace the traditional silicon-controlled carbon nanotubes made the photodiode, which is the basic component of solar cells. The researchers used different colors of laser diode of this study found that convert light into electrical energy in the process, it can double the current intensity.
The researchers said carbon nanotubes is an ideal photodiode, because it can take advantage of excess light energy, and the traditional excess solar energy is often in the form of heat loss.
The research results published in the U.S. "Science" magazine online edition. First author paper, Cornell University Graduate said: "We not only find a new material, and put it into application, solar cells made of the real."
However, the researchers pointed out that they currently only made in a laboratory high efficiency solar cells, but a new generation of cheap and reliable mass production of solar cells, still need more in-depth research.
Study found that a microbial fuel cells can be used for manufacture of high bacteria
Researchers at the University of Massachusetts has successfully isolated a large number of small surface protrusions with the bacteria, the surface processes due to their highly conductive, with the bacteria into the microbial fuel cell has more generating capacity.
AAAS website recently reported that researchers at the University of Massachusetts that the bacterium can be isolated from the graphite anode in fuel cells multiply and form a thick layer at the anode surface of the conductive membrane. The researchers explained that a large number of protruding surface of the bacteria is a protein composed of tiny fibers, they are like "nano-wires", the current can be transmitted through the biofilm, the bacteria used to make fuel cells will significantly improve the battery's power output.
As a long time, high efficiency to provide electricity, microbial fuel cells can be used for those placed in the remote environment, it is difficult often to replace the battery monitoring equipment, such as for deep-sea sensors observe the turtles.
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