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根据单晶硅绒面太阳电池表面结构的特征,本文应用几何光学原理,对于在其表面复盖了单层或双层透明材料之后,各界面上入射光的反射和透射问题进行了理论分析和实验研究。为获得硅绒面太阳电池封装组伴的最佳输出功率,在理论上给出了选择封装材料所需要的一些实用的不等式。实验测量结果指出:未镀减反射膜的硅绒面太阳电池,封灌单层107#硅橡胶后,Isc最大可提高5.8％;若用107#硅橡胶和普通白玻璃双层封装,最佳情况Isc可提高4.4％。开路电压保持不变。理论分析和实验结果满意地趋于一致。结论是:只要选择透过率高、射折率又满足一定要求的封装材料和工艺,对裸露的硅绒面太阳电池进行封装,其输出功率非但不会降低,及而会有所提高。文中还对实现太阳电池方阵的最佳封装材料的选择问题进行了讨论,提出了实现硅绒面太阳电池“准黑体”封装组件的具体途径。
According to the characteristics of single-crystal suede solar cell surface structure, this paper applies the principle of geometrical optics to analyze and analyze the reflection and transmission of the incident light at the interface after the single or double-layer transparent material is covered on the surface Experimental Study. In order to obtain the optimal output power of the package with silicon-suede solar cells, some practical inequalities are given in theory to select the package materials. The experimental results show that the Isc can be increased by 5.8% at maximum with silicon-free sunscreen solar cells coated with antireflective film and sealed with a single layer of 107 # silicone rubber. If 107 # silicone rubber and common white glass double-layer package, the best The situation Isc can be increased by 4.4%. Open circuit voltage remains unchanged. The theoretical analysis and experimental results are in agreement with each other satisfactorily. The conclusion is: As long as the choice of high transmittance, firing rate and meet the requirements of the packaging materials and processes, the bare silicon suede solar cell package, not only does not reduce its output power, and will improve. The paper also discusses the selection of the best encapsulation material to realize the solar battery square matrix, and presents the concrete way to realize the “quasi-black body” package of silicon suede solar cells.