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首页> 外文会议>Conference on photonics north >Time-dependent analysis of AlGaAs/AlGaAs tunnel junctions for high efficiency multi-junction solar cells
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Time-dependent analysis of AlGaAs/AlGaAs tunnel junctions for high efficiency multi-junction solar cells

机译：高效多结太阳能电池AlGaAs / AlGaAs隧道结的时变分析

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The current density-voltage characteristic of an AKjaAs/AluaAs tunnel junction is determined by taking a time-averaged measurement across the device. A tunnelling peak of ~950A/cm2 is recorded by this method. Measurements of the tunnelling peak and valley currents by the time averaging method are obscured due to the unstable nature of the negative differential resistance region of the current density-voltage characteristic. This AlGaAs/AlGaAs tunnel junction is then biased inside the negative differential resistance region of the current density-voltage characteristic, causing the current and the voltage to oscillate between the peak and the valley. The current and voltage oscillations are measured over time and then currents and voltages corresponding to the same time stamps are plotted against each other to form a time-dependent curve from which a tunnelling peak of a value larger than 1100A/cm2 is determined. The peak determined by this method is 11-20% larger than previously determined using the time averaged measurement. An AlGaAs/InGaP tunnel junction having no negative differential resistance region is also presented.
机译：AKjaAs / AluaAs隧道结的电流密度-电压特性通过对设备进行时间平均测量来确定。用这种方法记录的隧穿峰约为950A / cm2。由于电流密度-电压特性的负差分电阻区域的不稳定特性，使得通过时间平均法测量隧道峰值电流和谷值电流的方法变得模糊。然后，此AlGaAs / AlGaAs隧道结在电流密度-电压特性的负差分电阻区域内偏置，导致电流和电压在峰值和谷值之间振荡。测量随时间变化的电流和电压振荡，然后将与相同时间戳相对应的电流和电压相对于彼此绘制，以形成随时间变化的曲线，从中确定大于1100A / cm2的隧穿峰。通过此方法确定的峰比以前使用时间平均测量确定的峰大11-20％。还提出了一种不带负差分电阻区域的AlGaAs / InGaP隧道结。

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