Abstract
Solar cell is a promising candidate for clean and renewable energy power. But high cost and low energy conversion efficiency are bottlenecks for its applications. In recent years, big progresses have been made in developing solar cells with reduced cost and increased efficiency. In this paper, we review recent studies on a new type of solar cells based on coaxial nanowires (NWs) and their arrays. The advantages and the photovoltaic properties of this kind of solar cells will be depicted first. Then the methods for improving efficiency will be discussed. Finally, some innovative designs of the solar cell structures and the potential applications of such solar cells will be summarised.
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