Recently, American researchers developed a highly transparent solar cell. As the organic materials in the battery only absorb infrared and ultraviolet light, the entire module is difficult to be identified by human eyes.
Researchers at Michigan State University earlier proposed the idea of ​​developing a completely transparent solar cell. At that time, this idea is nothing more than fantasy. In fact, completely transparent solar cells are a paradox of their own: the principle of photovoltaic modules is to convert the solar energy in sunlight into electrical energy. Therefore, the higher the transparency of solar cells, the energy conversion efficiency will also be lower. One can imagine, if the components are completely transparent, the energy conversion rate will drop to zero. Prior to this, the most advanced R & D results are translucent solar cells.
Now, researchers at Michigan State University have succeeded in developing fully transparent photovoltaic cells by studying and using light unrecognizable by human eyes. If well developed, transparent solar cells are expected to replace the traditional glass, embedded in building windows, saving space while generating electricity, and did not affect the personal senses. RidLunt, professor of chemistry and materials science at Michigan State University, said: "We know that no one wants to be in a dark, glassy house, and that is why we are wholeheartedly committed to creating completely transparent solar cells."
Battery thin film composed of organic salt molecules, can absorb the human eye can not be aware of the solar spectrum. Professor Lunt emphasizes: "We made several attempts to find materials that absorb only UV and NIR." This innovation brings great flexibility to the product. "Even in the early stages of technology development, components have the potential to be produced rapidly, in large scale and at low cost, not only for windows in buildings, but also for all glassware such as computers, television screens and mobile phones. Truly be able to quietly provide electricity. "
However, it is also clear that many issues remain to be solved until the technology is actually put into production. For example, the current solar cell developed only 1% conversion rate. Researchers estimate that the power generation rate is expected to exceed 5% after optimizing the material structure. Although less efficient than translucent solar cell power generation, however, by virtue of the unique full transparency, enough to protect the product pervasive, make up for the weakness of efficiency.
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