Research On The Fabrication Of Monocrystallion Silicon Solar Cell With Ultra Low Reflectivity Based On Dual-structure

Depleting non-renewable resources such as coal, oil, natural gas, humans must find a safe, non-polluting energy. the life expectancy of the sun which is a large fireball is up to10billion years and the irradiation it generates on the earth per second is equivalent of500million tons of coal.Therefore, trying to develop solar energy become the best choice for people to address the lack of resources.The monocrystalline silicon solar cell production process is the most mature PV industry development, in order to reduce production costs, using the aqueous solution which is metal-catalyzed to prepare nanowires instead of the traditional method to prepare solar cell antireflection layer (ARC) is a good way to achieve the mass production. The suede of traditional silicon solar cells is the continuous pyramids structure which uses alkali solution to prepare utilizing the anisotropic of single crystal silicon. This structure is to reduce the reflectivity of the silicon surface. In this paper, for the lower anti-reflection effect the method of etching arrays of nanowires on the traditional pyramid structure is used to get ultra-low reflectivity of0.84%. And the monocrystalline silicon with this pyramid/nanowire double structure was used in solar cell production. by diffusion, removing edge, pattern printing and sintering of solar cells, we test the photoelectric conversion efficiency of it.Although the final conversion efficiency of13.8%did not reach the ideal value, we found the efficiency can be increased by the technology improved through the analysis of result and experimental experience, so the research of pyramid/nanowire double structure arrays to achieve ultra-low reflectivity for the suede preparation of the large area monocrystalline silicon is still having far-reaching significance and research value.