摘要
运用afors-het软件对β-FeSi2(n)/a-Si(i)/c-Si(p)结构的太阳能电池进行模拟,依次讨论了本征层、发射层、界面态对电池性能的影响。结果表明:添加本征层电池性能提高,但随着本征层厚度的增加载流子收集率下降、串联电阻增大,造成电池光电转化效率下降;发射层厚度的增加使得载流子的收集率下降造成光电转化效率下降,同时发射层掺杂浓度增大虽然使得内建电场强度增大,但载流子的复合也会加大,最终使得电池性能保持稳定;界面态使得电池性能下降,为使电池获得较好性能,界面态密度应尽可能小于1011 cm–2·e V–1。通过优化,最终使得该结构的太阳能电池光电转化效率达到17.00%。
The performance of β-FeSi2（n）/c-Si（p） HIT solar cell was simulated by using the afors-het. At the same time, the influences of the intrinsic layer, an emission layer, and the interface states on the battery performance were discussed. The results show that, the performance of battery is improved after adding the intrinsic layer. However, with the increasing of the intrinsic layer thickness, carrier collection rate decreases and the series resistance increases so that the photoelectric conversion efficiency of cell decreases. Increasing the thickness of the emission layer makes the collection rate of carrier decrease, causing that the photoelectric conversion efficiency reduces. Although the increasing of emission layer doping concentration leads to increasing of built-in electric field intensity, the carrier compound increases simultaneously. So the battery performance remains stable. Interface states degrade battery performance, so the density of interface states should be less than 1011cm–2·eV–1 in order to obtain the better performance for the cell. By optimizing the various parameters of the cell, the photoelectricconversion efficiency of β-FeSi2（n）/a-Si（i）/c-Si（p） solar cell can reach 17.00%.
出处
《电子元件与材料》
CAS
CSCD
2015年第6期23-27,共5页
Electronic Components And Materials
