An Investigation On The Space Charged Particale Environmental Effects Of The Cover-Glass For Solar Cell

On the basis of ground-based simulation for space irradiation environment, investigate the damage effect of the low energy electronics and protons, high-energy protons and electronics, integration radiation damage on the cover-glass for the solar cells. Use the adopted the spectrometry, Infrared spectroscopy, SEM, AFM and the Monte-carlo simulation to disclose the mechanism of charged particle irradiation damage on the cover-glass.The protons irradiation analysing results show that, when the low energy protons (30-170keV) eradiate, if the energy of the protons is the same, with the increased of the radiation fluence, the optical property of the cover glass degenerate. If the radiation fluence is the same, with the increase of the energy, the optical properties degenerate rapidly. Because that low-energy proton irradiation in material form the color centers, the type and quantity of the color centers are relevant to the radiation fluence and radiation energy. With the same fluence of radiation, the optical property of the lower current density irradiation samples decline much faster than the higher one. It is because when the higher current density proton eradiate generated much more thermal than the lower current density in cover glass, and inside the material form a local area with high temperature, in the case of high-temperature, the color centers will annealing. The macroscopic performance shows that, the one with lower current density has lower transmission.The high-energy proton irradiation tests show that, the damage of high-energy proton irradiation is different from the lower one. It is because that in the cover glass, when the high-energy proton irradiate, the electronic stop is a major role, the high-energy proton irradiation has great ionization effect, and generate a large number of electron-hole pairs, the type and the concentration of the color centers are different with the low-energy proton irradiation. And the change in the spectrum is different from the lower one.The low-energy electron irradiation tests show that, with the increase of the radiation fluence, there is almost no change in the absorptive spectrum of the cover glass. High-energy electron irradiation, the absorption spectrum is not the same as the lower one, it emerge a narrower and basic symmetrical absorption peaks, and the absorption peak low is much smaller. This is because that when electron eradiate, stopping power of the electrons in the cover glass is not the same as the protons, when particles is the high-energy electrons, nuclear stop is a major role, it is similar to low-energy protons radiation, and the shape of the absorption peak is also similar to one induce by the low-energy proton irradiation.Integrated irradiation results show that, the value of integrated irradiation absorption spectra is not equal to the value of proton irradiation adding electronic irradiation, and synergistic effect is obvious.