Does solar charging need a heat source?

by:Litel Technology     2021-11-14
Does solar charging need a heat source?
Whether a solar cell can fully absorb light energy during charging depends mainly on the wavelength of light and the intensity of radiation, and has nothing to do with the heat and cold of light. Light is essentially a type of electromagnetic radiation. It stands to reason. In other words, as long as the photoelectric reflection can be activated, solar charging can be carried out. Many people think that the principle of solar charging is very complicated, but when you look at the circuit diagram, you will find that the whole principle is actually very simple.

After the photoanode section of the lamp receives light, the electrons will undergo transitions. The semiconductor material of the photoanode can obtain energy from the outer electrons, and then it will migrate to the conductive band to generate an electron pair. The band gap of titanium dioxide near the solar cell that has undergone sensitive treatment is very large. If the electrons cannot obtain enough energy, there is no way to cross the band gap. So in general, there will be a layer of sensitizer on the solar cell, this layer of sensitizer can provide a place for the transition of electrons. However, the sensitizer cannot be used directly as the photoanode, because its conductivity is very good, and the electrons are easily reflected, but after the reflection, it will recombine instantly, so there is no influence.

The main advantage of semiconductor materials is that because of its poor electron mobility, it is difficult to find suitable holes to complete the recombination. However, if the part connecting the semiconductor is glass or metal with good conductivity, it can be The fatal attraction of electrons occurs. The electrons can flow from the anode to the outer circuit side to reach the cathode at once. Near the cathode, electrons and cations react, and the electrons obtained will be filled up from the beginning. Near the solution, the anions and cations move back and forth to transport electrons.

This reflection is the principle of solar charging. The entire reflection is a cyclic process called photoelectric reflection. There is a conversion efficiency. If the conversion efficiency can reach 7%, it has scientific research value and product value. Jiangsu Naite Lighting Electric Co., Ltd. The company is engaged in the production and design of solar street lamps, high-pole lamps manufacturers, 20 years of solar street lamp production experience, to create the most professional solar street lamp manufacturers, contact number: 13805257308. At this moment, most of the solar energy products' photoelectric conversion rate can reach this value, but most manufacturers are still working hard to increase this value. After increasing the conversion rate, their products can have greater advantages.

Cold light generally refers to fluorescence and phosphorescence. Although they do not have a high temperature, the wavelength and radiation intensity can meet the light demand of solar charging, so solar charging can use cold light and thermal light.
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