高效太阳电池表面织构与钝化研究

项目名称： 高效太阳电池表面织构与钝化研究

项目编号： No.61274051

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 黄惠良

作者单位： 上海交通大学

项目金额： 80万元

中文摘要： 中国的光伏产业在世界排名第一，然而，先进的知识产权问题依旧是制约光伏产业发展的关键。目前，单/多晶硅太阳电池由于其技术的成熟度高，在光伏行业扮演着极其重要的角色，其发展前景在于光电转换效率进一步提升。本项目拟研制栏栅型单/多晶硅太阳电池，通过电学与光学仿真对太阳能电池组件进行结构设计与和光电转换效率分析，探讨栏栅型纳米结构间的光波传输和光学干涉现象对陷光效应的影响，研究三维空间栏栅型表面结构的纳米尺寸效应，提高太阳电池在各光波范围的量子效率；采用集成电路工艺技术，用高介电薄膜取代传统的二氧化硅层，采用高介电材料超薄氧化层对太阳电池表面钝化，经由超薄氧化层内的固定电荷来改变太阳电池表面的电场分布，大幅降低表面载子的复合速度和增大开路电压，改进表面钝化效应；研究电化学刻蚀条件对栏栅型结构的沟槽孔径和密度等调控，实现优化结构与性能，提升光电转换效率，为发展太阳电池技术建立先进的知识产权基础。

中文关键词： 晶体硅太阳电池；减反结构；SiO2纳米球；表面钝化；纳米银铜颗粒

英文摘要： China now ranked first in PV manufacturing in the world, however, the advanced intellectual property is still the key issue restricting the development of photovoltaic industry. At present, single/polycrystalline silicon solar cells play a very important role in the photovoltaic industry due to its high mature technology, and its prospects is to further increase the photoelectric conversion efficiency. This project intends to develop the grating-type solar cells. We'd study the nano-size-effect of grating surface structure in three-dimensional space through the electrical and optical simulation analysis and structural design of solar modules. By replacing traditional silica layer with highly dielectric films and employing IC processing technique, the etching conditions and pore diameter and density of groove of grating surface structure are regulated and controlled, and the quantum efficiency of the solar cell in all range of light waves is improved. Then we will explore the light trapping effect arising from light wave transmission and optical interference among grating nanostructure, and optimize the structure and performance, increase the short-circuit current of the solar cells. In addition, we adopt the ultra-thin oxide layer high dielectric materials to passivate the solar cell surface, via the fixed charg

英文关键词： Si solar cell；Anti-reflective structure；SiO2 nanoparticles；Surface passivation；Ag-Cu nanoparticles