US researchers said on the 9th that they have found ways to develop the latest solar cell technology using diatom life structures. Compared to current silicon-based solar cells, solar power systems made with new technologies are simpler.
Diatoms, tiny tiny single-cell marine organisms that have survived on Earth for at least 100 million years, are the basis of many life-food chains in the ocean. In addition, they are constantly being exploited by their hard silicon shells. A new approach to nanostructures.
Greg Roer, professor of chemical engineering at Oregon State University, said that most of the existing solar cell technologies are based on silicon, and their capabilities have been almost developed to the limit, so other solar technologies will have better development opportunities.
One of the dye-sensitized solar cell technologies is environmentally friendly materials that work well in low light conditions. However, in currently manufactured dye-sensitized solar cells, it is difficult to obtain a photoelectric conversion semiconductor.
Using biology rather than traditional semiconductor production methods, researchers at Oregon State University and Portland State University have developed new ways to make dye-sensitized solar cells. The newly developed manufacturing method differs from the old method in several unique steps, while the new battery has the potential to provide more power.
The new manufacturing method is based on diatom living organisms, and these tiny single-cell diatoms have the nanostructured shells that people need. To make dye-sensitized solar cells, researchers first "dispose" diatoms on transparent conductive glass panels and then remove the organic matter that makes up the life of the diatoms, leaving only their tiny silicon shells to form the desired template.
The researchers then deposited the dissolved titanium in a template silicon shell with a biologic preparation to obtain tiny titanium dioxide nanoparticles, which formed a film that had the same effect as the semiconductor in the dye-sensitized solar cell. As a result, they have easily obtained semiconductors that are difficult to obtain in conventional dye-sensitized solar cells using natural organisms, while being easy to use and inexpensive.
According to Rolfer, commonly used thin film photosynthetic dyes receive photons from sunlight to produce electricity from titanium dioxide. However, in batteries produced by new technologies, photons rebound multiple times in the diatom shell, resulting in higher efficiency in generating electrical energy. He said that although the researchers have not fully understood the physical characteristics of the process, its effectiveness is very obvious. In addition to the simple thin layer structure of the new material replacing the semiconductor, the pores of the diatom shell seem to increase the interaction between the photon and the dye, thereby promoting photoelectric conversion and improving the power output.
Although the cost of using new technology to manufacture dye-sensitized solar cells is slightly higher than the cost of existing production of similar batteries, researchers believe that the final output of electricity is expected to appear three times higher than the battery.
Diatoms, tiny tiny single-cell marine organisms that have survived on Earth for at least 100 million years, are the basis of many life-food chains in the ocean. In addition, they are constantly being exploited by their hard silicon shells. A new approach to nanostructures.
Greg Roer, professor of chemical engineering at Oregon State University, said that most of the existing solar cell technologies are based on silicon, and their capabilities have been almost developed to the limit, so other solar technologies will have better development opportunities.
One of the dye-sensitized solar cell technologies is environmentally friendly materials that work well in low light conditions. However, in currently manufactured dye-sensitized solar cells, it is difficult to obtain a photoelectric conversion semiconductor.
Using biology rather than traditional semiconductor production methods, researchers at Oregon State University and Portland State University have developed new ways to make dye-sensitized solar cells. The newly developed manufacturing method differs from the old method in several unique steps, while the new battery has the potential to provide more power.
The new manufacturing method is based on diatom living organisms, and these tiny single-cell diatoms have the nanostructured shells that people need. To make dye-sensitized solar cells, researchers first "dispose" diatoms on transparent conductive glass panels and then remove the organic matter that makes up the life of the diatoms, leaving only their tiny silicon shells to form the desired template.
The researchers then deposited the dissolved titanium in a template silicon shell with a biologic preparation to obtain tiny titanium dioxide nanoparticles, which formed a film that had the same effect as the semiconductor in the dye-sensitized solar cell. As a result, they have easily obtained semiconductors that are difficult to obtain in conventional dye-sensitized solar cells using natural organisms, while being easy to use and inexpensive.
According to Rolfer, commonly used thin film photosynthetic dyes receive photons from sunlight to produce electricity from titanium dioxide. However, in batteries produced by new technologies, photons rebound multiple times in the diatom shell, resulting in higher efficiency in generating electrical energy. He said that although the researchers have not fully understood the physical characteristics of the process, its effectiveness is very obvious. In addition to the simple thin layer structure of the new material replacing the semiconductor, the pores of the diatom shell seem to increase the interaction between the photon and the dye, thereby promoting photoelectric conversion and improving the power output.
Although the cost of using new technology to manufacture dye-sensitized solar cells is slightly higher than the cost of existing production of similar batteries, researchers believe that the final output of electricity is expected to appear three times higher than the battery.
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