一些先进的光伏电池甚至可以提供更高的效率，但是由于要把直流电源转化为交流电，转换效率有所降低。
Some cutting-edge photovoltaic cells offer an even higher initial efficiency but fall behind when the DC power they produce is converted to grid-ready alternating current.
但由于镭射光束是有一单一波长的光组成，它的转化就要比拥有多种光波的太阳能转化成能量效率更高。
But because the laser beam is comprised of a single wavelength of light, the conversion to electricity is much more efficient than converting multiple wavelengths of sunlight to energy.
他们希望将来，当非晶态硅光伏电池的光电转化效率提高后，能利用卷到卷式的生产方式进行大规模的硅光伏电池的生产。
They also have hopes that when the efficiency of the amorphous silicon photovoltaic cells improves in the future, it may become possible to mass-produce the si PV cells by using a roll-to-roll method.
但太阳能光伏发电存在成本较高和能量转化效率较低的问题。
But solar energy photovoltaic power cost is high and its conversion efficiency is low.
但太阳能光伏发电存在成本较高和能量转化效率较低的问题。
But solar energy photovoltaic power cost is high and its conversion efficiency is low.
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