photoelectrical conversion

The results indicate that the photoelectrical conversion efficiency firstly decreases and then increases with increasing the thickness of the films. The photoelectrical conversion efficiencies of all films are generally at a rather low level.
结果表明，随着薄膜厚度的增加，转化效率先下降后上升，薄膜的光电转换效率一般处于较低水平。