太阳能电池用硅基纳米线中SiGe量子阱的实现

IF 1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Digest Journal of Nanomaterials and Biostructures Pub Date : 2023-03-01 DOI:10.15251/djnb.2023.181.327

M. Safi, A. Aissat, H. Guesmi, J. Vilcot

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引用次数: 0

摘要

本研究的重点是对一种含有SiGe/Si量子阱的新型硅纳米线太阳能电池进行建模和优化。量子效率测量表明，所提出的结构具有更高的能量吸收优势，并且比基于标准Si p-i-n纳米线的太阳能电池更强。结果，插入14层SiGe/Si量子阱分别将短路电流密度和效率提高了约1.24和1.37倍。在应变小于1%的情况下，获得的最佳浓度和半径值分别为x=0.05和r=0.190µm。

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SiGe quantum wells implementation in Si based nanowires for solar cells applications

This study focuses on modelling and optimizing a new Si nanowire solar cell containing a SiGe/Si quantum well. Quantum efficiency measurements show that the proposed structure has a higher energy absorption advantage and stronger than that of a solar cell based on a standard Si p-i-n nanowire. As a result, the insertion of 14 layers of SiGe/Si quantum well improved the short circuit current density and the efficiency by a factor of about 1.24 and 1.37, respectively. The best concentration and radius values obtained are x = 0.05 and r = 0.190 µm, respectively, with a strain of less than 1%.

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