arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2407.03733cond-mat.mtrl-sci
收藏

基于第一性原理计算比较黑磷与硅在纳米和微米尺度下的太阳能电池效率

Comparison of Solar Cell Efficiencies of Black Phosphorus and Silicon at the Nano and Micro Scales from First-Principles Calculations

Burak Ozdemir

AI总结:

本文通过第一性原理计算比较硅与黑磷在不同厚度下的太阳能电池效率,发现微米尺度硅占优而纳米尺度黑磷占优,揭示了材料厚度对效率的关键影响。

摘要:

对硅和黑磷(BP)进行了密度泛函理论及多体(GW+BSE)计算,以研究其透射率、吸收率和反射率。我们发现,在介电函数计算中采用的阻尼值0.01是计算硅太阳能电池效率的最佳选择。我们的计算表明,100 μm厚的硅板的太阳能电池效率为27.4%,而相同厚度下黑磷在光沿锯齿方向和扶手椅方向偏振时的效率分别为2.33%和1.94%。对于100 nm厚的材料,我们得到硅的太阳能电池效率为0.8%,而黑磷在光沿锯齿方向和扶手椅方向偏振时的效率分别为0.14%和1.02%,表明在这些小尺度下黑磷的性能优于硅。我们的结果强调了材料厚度对太阳能电池效率的重要影响。

英文摘要:

Density functional theory and many-body (GW+BSE) calculations of transmittance, absorbance, and reflectance are performed on silicon and black phosphorus (BP). We find that a damping value of 0.01 used in the dielectric function calculation is the optimal for calculating the solar cell efficiency of Si. Our calculations indicate that the solar cell efficiency of a 100 μm thick Si slab is 27.4% while the efficiency of BP for the same thickness is 2.33% and 1.94% for light polarized along the zigzag and armchair directions, respectively. For 100 nm thick materials, we obtain that Si presents a 0.8% solar cell efficiency and BP exhibits a 0.14% and 1.02% efficiency for light polarized along the the zigzag and armchair directions, respectively, indicating that BP performs better than Si at these small scales. Our results underscore the important effect of the material thickness on solar cell efficiencies.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑