What are the characteristics of silicon photovoltaic batteries?

Different intensities of light are irradiated on the photovoltaic battery. The photovoltaic battery has different short-circuit current Isc and open-circuit current at Voc, that is, the short-circuit current is in a wide range of light intensity and has a linear relationship with the light intensity, while the open-circuit voltage is non-linear. Moreover, when the light intensity is small, about 20mW/cm2, the short-circuit voltage tends to be saturated. Therefore, if you want to use the photovoltaic battery to measure or control the intensity of light, the short-circuit current characteristics of the photovoltaic battery should be used. The spectral characteristics of silicon photovoltaic batteries: Obviously, different photovoltaic batteries have different positions of the peak of the spectral curve. For example, the peak wavelength of silicon photovoltaic batteries is around 0.8 μm, and the selenium photovoltaic batteries are around 0.54 μm. The silicon photovoltaic battery has a wide spectral range, between 0.45 and 1.1 μm, and the selenium photovoltaic battery has a spectral range between 0.34 and 0.75 μm, which is only sensitive to visible light. It is worth noting that the spectral curve shape and coverage of the photovoltaic battery are not only related to the material of the photovoltaic battery, but also related to the manufacturing process, and it also changes with the change of the ambient temperature. The temperature characteristics of the photovoltaic battery The optical open circuit voltage decreases rapidly with the increase of temperature, and the short-current current increases slowly with the increase of temperature. Therefore, even if the IscEv characteristic is used for the measuring instrument made with the photoelectric battery as the sensor, when the measured parameter is constant, the reading of the instrument will drift with the change of the ambient temperature. Therefore, the instrument must adopt corresponding temperature compensation measures. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Is the internal resistance of the 18650 lithium battery pack good or small?