Otherwise it will use optical thin-film to reflect some wave band which photovoltaic battery can use to photovoltaic battery, as for the rest energy, it will transmit into other means of conversion.

此外，利用光学薄膜，将光伏电池可利用的波段反射给光伏电池，其余部分的能量透射用以其他形式的能量转换。

youdao

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。

youdao

Electricity from sunlight is truly "green" and inexpensive but requires an energy conversion system with photovoltaic (PV) cells and a storage unit, such as a battery.

来自于日光的电能是真正“绿色”和廉价的能源，但是需要基于光伏(PV)电池和存储设备(例如电池)的能量转换系统。

youdao

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