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MIT uses living viruses to transform carbon nanotube solar cells

researchers at the Massachusetts Institute of Technology (MIT) in the United States said that living viruses can be used to install high conductivity carbon nanotubes into the positive structure of dye-sensitizedsolar cells, which can improve the efficiency of the cell by almost one-third

dye sensitized solar cell is a photoelectric chemical system, which is made of semiconductor element materials located between the positive electrode of the photosensitive sample and the electrolyte symmetrically clamped between the jaws as required. Titaniumdioxide, covered with dye, absorbs sunlight and releases electrons into the cathode. Then those electrons will be collected to drive the load of deformation units mm, cm and inch, and then return to the electrolyte through the negative pole, so as to cycle continuously. MIT researchers said that the conversion efficiency of dye-sensitized solar cells could be improved from less than 8% to more than 10.6% by interweaving carbon nanotubes and positive electrodes with viruses

the research team is led by MIT professor Angela Belcher, and its members include doctoral students Xiangnan Dang and hyunjung Yi, as well as two other professors paulahammond and Michael strano

Belcher has previously confirmed that a virus called M13 can stimulate "hydrogeneconomy" and promote thin-film batteries. The latest research result of the team is the first time to use viruses to isolate nanotubes in solar cells, with 980.7 to prevent nanotubes from agglomerating or causing short circuits. Each virus can adsorb 10 nanotubes in a region of about 300 peptide molecules, and then this genetically engineered virus will secrete titanium dioxide coating

if this new technology can be successful outside the laboratory, this nanotube enhanced solar cell will enter the microbial technology product market with an estimated scale of $156 billion in 2011. According to the prediction of bccrepearch, a market research institution, the market scale can also grow to more than US $259billion in 2016

the so-called microbial technology products, including natural yeast, brewing beer, and M13 genetically engineered microorganisms developed by MIT, can be applied to insulin, biodiesel, and metallurgicalproducts Etc

m13 virus is composed of a standard DNA sequence (the coil on the right of the figure), which is adsorbed on carbon nanotubes (gray) and maintained in a fixed position. And attached to dye 13, test bench safety device: electronic limit protection; The titanium dioxide coating (yellow) on the molecule (red) is surrounded by viruses and carbon nanotubes

belcher said that this new technology developed by MIT can also be applied to other types of organic and quantum dot solar cells by adding a simple step to the process of dye-sensitized solar cells

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