A predicted conversion efficiency limitation of 20% for silicon solar cells in practical devices was made by photovoltaic specialists.

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%。

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An analog maximum power point tracking (MPPT) controller integrated circuit (IC) based on open-circuit voltage method was proposed to enhance the photovoltaic conversion efficiency of solar cell.

为提高光伏电池的光电转换效率，设计一种基于开路电压法的光伏电池最大功率点跟踪(MPPT)控制芯片。

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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。

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If, on the one hand, you've got biofuels which represent only a half a percent conversion of sunlight, and let's say you've got photovoltaic cells and concentrated solar power systems, the efficiency of solar in terms of pure conversion is 50-100 times greater.

CNN: Biofuels: What do the experts think?

Back on July 27th, I wrote about how surprised I was to find shares of Power-One (PWER), a provider of renewable energy and energy-efficient power conversion and power management solutions such as photovoltaic inverters used in solar power applications, trade down after reporting blow-out second quarter results.

FORBES: Explain This One, Part 2

Speaking of solar efficiency, this week solar manufacturer Amonix announced that its concentrated photovoltaic technology has set a new efficiency record with a conversion rate of 33.5 percent.

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