Another line of research is to explore the use of photovoltaic (solarcell) materials other than silicon - such as iron oxide, which might be even cheaper to produce.
研究的另一个方向是挖掘光电池的潜在利用价值，比如制造成本更低的氧化铁。
2
By magnifying the solar energy, the technology can reduce the amount of semiconductor material needed for the photovoltaiccell.
通过放大太阳能，这种技术可以节约光伏电池所需的半导体材料的数量。
3
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 solarcell.