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Analysis of GaAs/AlGaAs quantum nanodisk solar cell with intermediate band carrier transportation

机译：具有中带载流子传输的GaAs / AlGaAs量子纳米盘太阳能电池分析

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摘要

We have developed an 1-D drift-diffusion model for an intermediate band solar cell (IBSC) based on Scharfetter-Gummel scheme. The effect of the electron transportation in intermediate band is investigated by a rigorous solution to the electron density in IB. Due to the introduction of the electron mobility in intermediate band (IB), the electron density in IB tends to become uniform. Varying the electron mobility in IB causes the change of the potential profile and electron density in IB region. Moreover, the conversion efficiency including the electron mobility in the IB presented here decreases compared to results based on sole generation/recombination process model, which is the conventional method. However, the efficiency can be fully recovered by the light concentration, indicating the importance to enhance the electron density in IB.
机译：我们已经基于Scharfetter-Gummel方案为中频带太阳能电池（IBSC）开发了一维漂移扩散模型。通过严格地解决IB中电子密度的方法，研究了中带中电子传输的影响。由于在中间带（IB）中引入了电子迁移率，所以IB中的电子密度趋于变得均匀。 IB中电子迁移率的变化会引起IB区中电势分布和电子密度的变化。而且，与基于鞋底生成/复合过程模型的传统方法的结果相比，此处介绍的IB中包括电子迁移率的转换效率降低了。但是，光的浓度可以完全恢复效率，表明提高IB中电子密度的重要性。

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