论述了梯度掺杂对太阳能电池光伏转换效率的影响。
The conversion efficiency of gradient-doped solar cells is discussed.
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.
光伏界的专家们曾经认为硅太阳电池转换效率在实际器件上的极限为20%。
A predicted conversion efficiency limitation of 20% for silicon solar cells in practical devices was made by photovoltaic specialists.
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