Abstract

An analytical model is proposed for the study of the effect of surface recombination on the characteristics of a solar cell made of a nanowire with a radial p-n junction formed between its ‘core’ and ‘shell’ with different types of the conductivity. The influence of the surface recombination on such important parameters of the solar cell as the short circuit current, open circuit voltage, and efficiency of conversion of the energy of solar radiation into electrical energy is considered when the shell width is varying over a wide range. It is shown that the relatively low open-circuit voltage, often observed experimentally in such solar cells, can be partially caused by significant surface recombination on the sidewall of the nanowire, the role of which increases with decreasing nanowire diameter and increasing surface to volume ratio.

中文翻译：

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表面重组对具有径向p-n结的单个纳米线太阳能电池开路电压的影响

摘要

提出了一种分析模型，用于研究表面重组对具有径向pn的纳米线制成的太阳能电池特性的影响在“核”和“壳”之间形成具有不同类型导电性的结。当壳宽在宽范围内变化时，考虑到表面复合对太阳能电池的重要参数的影响，例如短路电流，开路电压以及将太阳辐射能转换为电能的效率。结果表明，通常在此类太阳能电池中通过实验观察到的相对较低的开路电压可能部分由纳米线侧壁上的明显表面重组引起，其作用随着纳米线直径的减小和表面积与体积比的增加而增加。