Another line of research is to explore the use of photovoltaic (solar cell) 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
Then expect that the pyrite is a possible substitute of the Silicon as the cardinal photovoltaic semiconductor material to prepare for the solar cell.
并预期在制备太阳电池时，它可能代替硅，而成为今后主要的光伏半导体材料。
3
As the power efficiency of traditional silicon-based solar cell is low and also it costs high, concentrator photovoltaic systems with high conversion efficiency will become the main direction.