论文标题
在倒变质太阳能电池生长过程中观察到的Zn扩散增强的证据
Evidence of enhanced Zn-diffusion observed during the growth of Inverted Metamorphic Solar Cells
论文作者
论文摘要
锌扩散可以在多孔太阳能电池的电性能中引起多个故障。在这项工作中，我们展示了从Algainp后表面层到倒数多期太阳能电池的Gainp顶部电池发射极的重要Zn扩散。通过分析不同的掺杂曲线，我们提供了有力的证据，表明（1）隧道连接阴极的生长触发的扩散机制涉及点缺陷。我们通过将不同样品的电性能与其相应的掺杂曲线相关联，分析了Zn扩散对带隙，后passivation和少数载体质量的影响。
Zinc-diffusion can induce multiple failures in the electrical performance of a multijunction solar cell. In this work, we show an important Zn-diffusion from the AlGaInP back-surface-field layer to the emitter of the GaInP top cell of an inverted multijunction solar cell. Through the analysis of different doping profiles, we provide strong evidence that the diffusion mechanism is (1) triggered by the growth of the tunnel junction cathode and (2) involves point defects. We analyze the implications of Zn-diffusion on the bandgap, the rear-passivation and the minority carrier quality of the GaInP solar subcell by relating the electrical performance of different samples to its corresponding doping profile.
