Briefly describe the working principle of thin-film solar cells

The thin-film solar cell module is composed of glass substrate, metal layer, transparent conductive layer, electrical function box, glue material, semiconductor layer and so on. In a chemical battery, the direct conversion of chemical energy into electrical energy is the result of chemical reactions such as oxidation and reduction that occur spontaneously inside the battery. This reaction takes place on the two electrodes, respectively. The negative electrode active material is composed of a reducing agent that has a relatively negative potential and is stable in the electrolyte, such as active metals such as zinc, cadmium, and lead, and hydrogen or hydrocarbons. The positive electrode active material is composed of an oxidant with a positive potential and stable in the electrolyte, such as manganese dioxide, lead dioxide, nickel oxide and other metal oxides, oxygen or air, halogens and their salts, oxyacids and their salts, etc. . Electrolytes are materials with good ionic conductivity, such as aqueous solutions of acids, alkalis, and salts, organic or inorganic non-aqueous solutions, molten salts, or solid electrolytes. When the external circuit is disconnected, although there is a potential difference (open circuit voltage) between the two poles, there is no current, and the chemical energy stored in the battery is not converted into electrical energy. When the external circuit is closed, current flows through the external circuit under the use of the potential difference between the two electrodes. At the same time, inside the battery, since there are no free electrons in the electrolyte, the transfer of charge must be accompanied by the oxidation or reduction reaction of the interface between the bipolar active material and the electrolyte, as well as the material migration of reactants and reaction products. The transfer of charge in the electrolyte is also completed by the migration of ions. Therefore, the normal charge transfer and material transfer process inside the battery is a necessary condition to ensure the normal output of electric energy. Thin-film solar cells have excellent heat and humidity resistance and severe cold resistance, and their wide-span environmental adaptability has made them highly praised and loved by customers in various regions around the world. Whether it is the cold and dry high latitudes of Europe or the hot and humid equatorial region, there are countless projects successfully used in large-scale thin-film solar cells, and they can guarantee an outdoor service life of more than 20 years. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Analysis on the daily maintenance of UPS power lead-acid batteries