What is the advantage of solar cell?

　　Author ：Iflowpower – Portable Power Station Supplier

Solar cells are devices that transform light energy (main sunlight) into electrical energy. According to the principle, the photovoltaic effect is based on the two sides of the optical carrier to reach the two sides of the light carrier, which is connected to the external circuit, which is connected to the external circuit, and the power output solar cell is related to the light intensity. , The stronger the power output.

Solar system is easy to install, easy to expand, easy to disassemble, etc. In addition, the system is mechanically worn, a solar system requires a reliable solar battery for acceptance and storage of solar energy. General solar cells have the following advantages: 1.

High-charge electric absorption capacity 2. Circular life is 3. Good charging performance 4.

No need for maintenance advantages,? Environmentally friendly, only sunshine, green energy, and use without laying cables in remote areas, can be used alone, flexible, roof, roof can be used. The disadvantage is that the photoelectric conversion rate is very low, it takes a lot of area, the cost is too high. Perovanium mine solar cells, scientists found in the latest research, the conversion efficiency of the organic solar cell of a perovskite structure or as high as 22.

1%, 2 times the current conversion efficiency of solar cells on the market, can significantly reduce solar cells Use cost. Related research Posted in the latest issue of "Nature" magazine. Although the research team has not shown high-efficiency solar cells manufactured by new materials as raw materials, this study has become a strong supplementary supplement to many research, which proves that perovskite, titanium-titanium mine with unique crystal structure, is expected to change the face of the solar industry.

In the current market, the mainstream solar cells are materials with silicon and cadmium telluride. It has reached the current transformation efficiency for more than 10 years; and the perovskite has only spent a short four-year study. In view of this, even if the industry is also conserved Very optimistic about the perovskite.

The leader of the study, Andrew Director, the Pennsylvania University Energy Innovation Research Center, said that the solar cell manufactured by the new-type calcium titanium ore is directly converted to electricity, which is twice that of current, so Only half of the solar cells can provide the same power, which will greatly reduce the installation cost, so that the total cost is significantly reduced. In addition, Am said that the new material does not require electric fields to generate current, which will reduce the amount of material, which can increase energy output; and new material It can also react with visible light very well, which is significant for solar cells. The researchers also prove that the new material will effectively convert different wavelengths of sunlight into electricity, and scientists can produce solar cells with different layers, absorbing different wavelengths of sunlight, thus significantly improved efficiency.

However, experts have emphasized that although these attributes are useful, the Am Group wants to make the available perovskite solar cells and a long way to go. First, this solar cell is very low. The advantages and disadvantages of perovskite solar cells from 2009 to 2015, the photoelectric conversion efficiency of the perovskite solar cells jumped from 3.

8% to 20.3% from 3.8%, increased by more than 5 times.

Its efficiency improvement is ranked by "Science" journal as one of the 10 scientific breakthroughs in 2013. At present, the academic research of the perovskite solar cell is still very active, and its industrialization prospect is also very optimistic, but the research results of practical technology are still taken. Optical disadvantage of perovskite solar cells This is because: the advantage of a calcium titanium-titanium battery: the conversion efficiency is fast - 6 years from 3.

8% to 20.3%, and US scientists found in the latest research in November 2013, The conversion efficiency of the newly calcium and titanium solar cell or can be as high as 50%, which is twice that of solar battery conversion efficiency in the market. This shows that it has great development potential; the battery production process is simple - often uses liquid phases in the laboratory Deposition, vapor deposition process, liquid phase / gas phase mixed deposition process On the glass, it is also possible to achieve different degrees of transparency by controlling the thickness and material of each layer of material, and of course the efficiency is also reduced, but such applications are worth trying.

For example, Oxford University's laboratory has been able to make a semi-translucent (gray brown) battery. If the solar cell integrated with the lighting and power generation is smooth, it is expected to become a replacement of the high-rise building curtain wall decoration, vehicle non-ferrous glass film, etc. Calcium-talent solar cell advantages and disadvantages of dual calcium titanium-based cells: material toxic-perovskite battery materials contain lead, but lead with other types of batteries contain arsenic, gallium, ruthenium, cadmium compared to small wits,.

Northwestern University, Northwestern University has also developed a perovskite solar cell that replaces the lead in the lead, but the conversion efficiency of this battery is still only 6%, and the material is very unstable, and is currently in the development of primary stage; material is unstable - Lead in the calcium titanium mine is easily oxidized to volatilize iodine, and is easy to decompose when the crystal is metastase. If we use the perovskite battery to generate electricity, it is very likely to decompose to the roof or soil; the battery life is not long - the longest life expensive perovskite solar cell can reach 1000 hours, from Huazhong University of Science and Technology and Lausanian Federal Institute of Technology Cooperative R & D. And traditional crystalline silicon battery life can generally reach 25 years, much more than calcium-titanium battery.

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