Spectral response of solar cells

Photoelectric conversion efficiency of the solar cell is the maximum power output of the solar cell is irradiated on a human cell ratio of the power of light emitted. It is related to its structure, junction characteristics, material properties, operating temperature of the battery, radiation damage of radioactive particles, and environmental changes. At present, the upper limit of the ideal conversion efficiency of silicon solar cells is about 33%; the conversion efficiency of commercial monocrystalline silicon solar cells is generally 12%-15%, and the conversion efficiency of high-efficiency monocrystalline silicon solar cells is 18%-20%.

The spectral response of a solar cell is related to factors such as the structure, material properties, junction depth, and surface optical properties of the solar cell, and it also varies with ambient temperature, cell thickness, and radiation damage.

The spectral response represents the ability of photons of different wavelengths to generate electron-hole pairs. Quantitatively, the spectral response of a solar cell is the average number of carriers that can be collected per photon when light of a certain wavelength is illuminated on the surface of the cell. The spectral response of a solar cell is further divided into an absolute spectral response and a relative spectral response. The unit radiation energy of various wavelengths or corresponding photons are incident on the solar cell, which will generate different short-circuit currents. The corresponding short-circuit current curve obtained by the wavelength distribution is called the absolute spectral response of the solar cell. If each wavelength is incident on the solar cell with an equal amount of radiant light energy or equal photon number, the generated short-circuit current is compared with the maximum short-circuit current therein, and the ratio change curve is obtained according to the wavelength distribution, which is the solar cell. Relative spectral response. However, the absolute and relative spectral response, the higher the peak of the spectral response curve, the flatter the higher the short-circuit current density of the corresponding battery, and the higher the efficiency.

Counter Flow Closed Cooling Tower

Let's look at the comparison of electric energy, electric energy is not different, because they are all through the same power equipment to operate the equipment, the power of the two is similar, the running time is the same, basically the energy consumption is about the same.

To sum up, for the Closed Cooling Tower energy saving accounting can be strong to open the tower out, and, today are advocating energy conservation and environmental protection, this is the general trend, so the closed cooling tower is more and more favored by the majority of users.

Counter Flow Closed Cooling Tower,Closed Type Cooling Tower,Cooling Tower Closed Loop System,Closed Circuit Cooling Tower

Wuxi Ark Fluid Science Technology Co., Ltd. , https://www.fangzhouarkfluid.com