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According to foreign media reports, at the recent high-tech fair (CEATEC) held in Japan, a new solar product attracted the attention of the crowd. The product was developed by 3M, a special film that can be applied to ordinary windows. And convert it into solar panels. On the day of the fair, 3M exhibited on curved ordinary glass surfaces. It is reported that this kind of window solar film is planned to be available next year. The new panels not only generate electricity in the sun, but also act as a thermal barrier to protect the family home.
This film is mainly made of an organic photovoltaic material and has good power generation and heat insulation properties. In addition, the product has other effects, and power generation is only its main function. It can also be used as a coolant to absorb more than 90% of infrared light while also preventing windows from breaking up. The film is a translucent green tape that can be affixed to the window over a large area. According to Yasuhiro Aoyagi, a senior manager at 3M, this type of window film is easier to install than ordinary solar panels. Ordinary users can install it without special installers.
Although the product is eye-catching enough, there are still some shortcomings in the product. In the seemingly simple solution, the conversion rate of this product is not high, its energy is only 20% of ordinary solar panels. According to 3M employees, the one-square-meter area of ​​the product can provide enough power for an iPhone, but only if it is under the strongest sunlight. At present, the company did not disclose the specific pricing of new products, but its cost is only half of the ordinary panels.
According to 3M employees, if this window film enters the Japanese market, 3M will target the user groups as government buildings, commercial buildings and fast food restaurant owners. It is reported that early this year, 3M received US$4.4 million in incentives from the U.S. Department of Energy. The award was awarded based on an initiative to reduce the total cost of photovoltaic solar energy systems. The goal is to reduce the rate by 75%. In this way, solar energy can be used to reduce costs. Competing with other forms of energy can develop normally even without subsidies.
In addition, scientists at the US Department of Energy's Brookhaven National Laboratory and Los Alamos National Laboratory have recently developed a new transparent film that absorbs light and converts it into electrical energy over large areas. This thin film is based on semiconductors and fullerenes and has a micro honeycomb structure. Related research was published in the latest issue of the journal Material Chemistry, which states that the technology can be used to develop transparent solar panels. It can even be used to make windows that can generate electricity. This material consists of a carbon-doped fullerene semiconductor polymer. Under strictly controlled conditions, the material can be assembled from a micron-scale hexagonal structure into a flat surface that is a few millimeters wide and covered with microcellular structures.
Milche Catlett, a physical chemist at the Center for Multifunctional Nanomaterials at the Brookhaven National Laboratory in the United States, who is responsible for the study, said that although this honeycomb film was fabricated using a process similar to that of traditional polymer materials, semiconductors and It is the first time that fullerene is a raw material and it is capable of absorbing light to generate charge.
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