An external circuit provides a path for the electrons to return to the p-type material, producing an electric current along the way that continues as long as light strikes the solar cell.
此时接上一条外线电路,电子便通过线路流动到p层。只要光束持续地撞击太阳能电池,就会有持续的电流。
2
To do this, the designer must be certain of the actual path that the returncurrent takes in getting back to the signal source.