Sustainable Silicon Solar Photovoltaics:Roadblocks and Our Approaches

来源 :SNEC 第十届(2016)国际太阳能产业及光伏工程(上海)论坛 | 被引量 : 0次 | 上传用户:aumqspthccx
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  Among the current solar photovoltaic technologies,silicon photovoltaics has the best chance to reach a terawatt scale.The roadblocks which hinder a scalable and sustainable silicon photovoltaic technology include the scarce silver in todays silicon cells,high energy input for silicon wafers,recycling of silicon modules,storage of the intermittent solar electricity,and high costs for production and installation of silicon modules.In this talk,we will present an analysis,as quantitative as possible,on these roadblocks under the best scenarios.Without significant technological breakthroughs,the silicon photovoltaic technology would not be able to make a noticeable impact on our energy mix or carbon emission.Several strategic research directions are identified for a sustainable silicon photovoltaic technology.Finally an overview of the research portfolio in Laboratory for Terawatt Photovoltaics at ASU is presented.Several projects are highlighted including all-aluminum silicon solar cells,electrorefining for solar-grade silicon,value-added recycling of silicon cells and modules,and efficiency uniformization in silicon cell production.
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