Papers by Author: Jian Xin Zhang

Abstract: A new structure of a-Si/ poly-Si tandem solar cell has been desiged and prepared. Amorphous silicon has been use as photovoltaic material of bottom cell. And polysilicon has been used as photovoltaic material of bottom cell.The combination of amorphous silicon and polysilicon extends the light range which can be used by solar cell. This structure improves the efficiency of solar cell greatly.

Abstract: ×MOS structure has been radiated by electron, dosage is 2×10¹³ cm^-2 ~ 1×10¹⁴ cm^-2. The interface density distributing in energy band has been tested by quasi-static method. It is found that interface density increase while electron dosage increasing. When dosage arrived to 1×10¹⁴ cm^-2, interface density arrives to 10¹³(cm^-2eV^-1),which is two order of magnitude higher than without irradiation. Further more, the shapes of density increase curve are completely different.