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
The laser Line Longpath gas cell is a variable pathlength cell with a battery operated visible laser alignment system.
我们生产的离子光电池有多种波程长度可选，配备电池蓄电的可见激光校准系统。
3
A new type of thin layer spectroelectrochemical cell with a long optical path length was designed and constructed.