Fabrication of Nanostructure on Crystalline Silicon Solar Cell by Soft Lithography

• Main Authors: Chi-FengChang, 張其峰
• Other Authors: Chie Gau
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/95025894852046676456

碩士 === 國立成功大學 === 航空太空工程學系碩博士班 === 101 === The study has two primary parts. First part is to improvement process of silicon solar cell. Those focus on change different temperature and time for thermal diffusion and sinter silver glue. It made the process of silicon solar cell optimization. The second part is to add the transparent film that it has nanostructure on the surface of silicon solar cells. The transparent film used polystyrene nanospheres that it has self-assembly properties and Hexagonal closed-packed, as well as regulation array structure. The Polystyrene nanospheres used spin coater to spin on a glass substrate. It used a PDMS that is a light-transparent polymer material to fabricate different size and structure of the transparent film by soft lithography. Finally, the silicon solar cell to stuck transparent film that it made light get into the nanostructure film, so that decrease the light-reflection and enhance the short-circuit current (Isc). This study used 140nm, 430nm, 820nm and 2um nanospheres and regulation array structure to make the transparent film by imprint PDMS, and used it stuck on the surface of the solar cell. The result of measurement shows that the open circuit voltage (Voc) to maintain in 0.53 V, the fill factor (FF) was maintained at 0.70 to 0.71, the short-circuit current density (Jsc) increased from 22.28mA/cm2 to 24.25mA/cm2, therefore conversion efficiency increased from 8.3% to 9.1%.