comsol毫秒激光对硅太阳能电池的损伤效应研究
关键词：毫秒激光、单晶硅太阳能电池、瞬态温度应力场、损伤机理
毕业论文设计说明书外文摘要
Title Damage effect of laser on silicon solar cell in millisecond laser
Abstract
Solar monocrystalline silicon solar cell was developed relatively early, is now the fastest-developing solar panels, its structure and production technology have matured and have been widely used in space and on the ground equipment. As the first solar cells to be developed, since developed up to now, with its relatively stable performance and high conversion efficiency, and in many ways has an important practical purpose, research on laser damage of single crystal silicon solar cells, a very important theoretical and practical significance. Using Comsol software, by using numerical simulation methods, simulating milliseconds laser transient thermal stress field of the monocrystalline silicon solar cells, taking into account the parameters change with temperature of silicon materials Silicon anisotropic elastic modulus of the material. On the temperature field and stress field of numerical results are compiled, due to thermal stress and damage mechanism of redistribution of ions-doped single crystal silicon solar cells. And to damage the silicon solar cell experiment, measure the damage before and after the current, voltage, and experiment results and draw conclusions.
Keywords Millisecond laser; Single crystal silicon solar cell; Transient temperature stress field; Damage mechanism
目 次
1 引言 1
1.1 激光对硅太阳能电池损伤效应的研究现状 1
1.2 本文构架 2
2 单晶硅太阳能电池简介及其激光损伤的comsol模拟 3
2.1 单晶硅太阳能电池的工作原理和结构 3
2.2 激光对硅太阳能电池的损伤机理 3
3 基于comsol软件的模拟以及分析 6
3.1 温度场的基本概念 6
3.1.1 热传导方程 6
3.1.2 有限元方法介绍 7
3.2 温度场计算的有限元模型 8
3.3 温度场模拟结果 10
3.3.1 表面光斑中心温度随时间的变化 10
3.3.2 温度场表面的横向分布 11
3.3.3 温度场的纵向分布 12
3.4 P层掺杂离子重分布的数值模拟 13
3.5 物理场模拟 15
4 毫秒激光对硅太阳能电池损伤的实验研究 17
4.1 实验装置 17
4.2 实验过程 17
4.3 实验结果及分析 20
4.3.1 损伤形貌 20
4.3.2 输出特性分析 22