色散技术应成为中国未来工业级光伏技术的主攻方向

Focus Our Power Plan Grade Photovoltaic Development Efforts on Dispersion Technology

光伏技术正在转化为一个新兴高科技产业,并以年均增长30%的速度开拓市场。中国光伏级硅产量占世界总产量的49%。中国通过引进技术和工艺设备,已具备批量生产非晶硅薄膜电池板的能力,但第三代光伏技术尚未形成生产能力。中国光伏产业的一个突出问题是绝大多数知识产权来自国外。第四代光伏技术将光谱匹配与光电转换从功能上分开处理,从而实现更高的系统转换效率及更低的成本。其中色散技术最有可能成为未来第四代光伏技术的胜出者,其优点包括:转化效率高;可方便利用多种先进材料和纳米技术,从而使电池成为廉价的易损件,可延长整个光伏系统的使用寿命;设备制造过程更清洁、低耗;能提高日出电量40%以上,并可改善占地环境。建议中国应将色散技术做为未来工业级光伏技术的主攻方向,并积累自己的知识产权。应通过方案验证、单机产品开发以及组网设备集成三步发展策略来降低第四代光伏科技开发投资的风险。

As an immerging high tech industry, photovohaic（PV） business grows at 30% average annual rate. By end of year 2009,China produced photovoltaic grade silicon already took 49% of annual world market share.In addition,China has formed the capability of producing amorphous silicon solar panel in batch via-introducing the production lines from South Korea and the US,although it has not completed its efforts in developing the third generation concentrated photovohaic （CPV） product.One of the major concerns of the China＇ s PV industry is that most of its intellectual properties （IP）are from the West.To build up our own PV IP portfolio,we suggest focusing our development efforts on the fourth generation PV technology,which separates the solar spectrum splitting function from the photon-electron conversion cells for higher efficiency and lower system cost.Further more,we suggest that dispersion technology will most likely be the winner among the competing technologies for higher conversion efficiency;easier to integrate with advanced materials and nanotechnologies for lower cost and longer system life;greener production process;and 40% more electricity production per unit area and improvement of the power plan land ecology.To better manage the new tech in- vestment risk ,we propose a three-step strategy of methodology development ,solar unit system product development and power plant system integration.