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中文摘要：
用AFORS-HET软件对β-FeSi2（n）/c-Si（p）太阳能电池的发射层进行了梯度掺杂模拟,并研究了发射区掺杂总量相同时梯度掺杂和均匀掺杂对电池转化效率的影响。分别讨论了梯度掺杂时发射区的能带、发射区的浓度差、发射区的层数对电池转化效率的影响。实验结果表明,发射区梯度掺杂可以明显提高电池转化的效率。随着发射区各层浓度比的增大,电池转化效率先增大后保持不变;随着发射区层数的增加,电池转化效率先增大后保持不变;随着发射区厚度的增加,电池转化效率逐渐降低。梯度掺杂电池转化效率的提高总量远大于因梯度发射区过厚造成的电池转化效率的降低总量。
英文摘要：
The emission layer of β-FeSi2（n）/c-Si（p） solar cell was simulated by AFORS-HET software in gradient-doping and the influence of gradient doping and uniform doping on the conversion efficiency of cells for the same total amount of doping in emission areas was studied.For gradient doping,the influences of emission energy band,emission concentration difference and layer number in emission areas on the conversion efficiency of cells were discussed respectively.The experimental results showed that the use of gradient doping in emission areas could significantly improve the conversion efficiency of cells.With the increase of concentration ratio of each layer in emission areas,the conversion efficiency of cells increased first and then remained unchanged;with the increase of layer number in emission areas,the conversion efficiency increased first and then remained unchanged too;and with the increase of thickness of emission areas,the conversion efficiency decreased gradually.The total increase amount of conversion efficiency of gradient-doped cells was far greater than the total decrease amount of conversion efficiency caused by over thick emission areas.
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