Made with a family of crystalline materials called perovskites, they are capable of delivering panels with practical efficiency rates well above 30%.

它们由一类名为钙钛矿的晶体材料制成，能够提供实际效率远高于 30% 的面板。

In time they believe they can double the current efficiency rate of silicon panels and eventually converting to 40 percent of the sun's rays into electricity.

随着时间的推移，他们相信可以将硅板当前的效率提高一倍，并最终将40%的太阳能转化为电能。