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arXiv · 2106.01889

The Transition from Generation-Recombination Noise in Bulk Semiconductors to Discrete Switching in Small-Area Semiconductors

F. Grueneis
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Abstract

The master-equation approach provides generation-recombination (g-r) noise in bulk semiconductors in terms of parameters of conduction electrons. It is shown that the g-r bulk noise can also be described by the random succession of elementary g-r pulses. This enables g-r bulk noise to be interpreted in terms of the numbers of traps. The transition from g-r bulk noise to discrete switching in small-area semiconductors is found by reducing the number of traps to just one single active trap. The resulting g-r noise spectrum is shown to be equivalent to Machlups noise spectrum. The probability of an overlap of succeeding g-r pulses is calculated. Such an overlap is attributed to the occupation of an empty single trap by an electron transferred from a neighboring trap. Simulating a g-r pulse train we find a large variety of patterns similar to those observed in MOSFETs. Excluding overlapping g-r pulses, the up and down distribution of succeeding g-r pulses is estimated.

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F. Grueneis. 2021-05-24. The Transition from Generation-Recombination Noise in Bulk Semiconductors to Discrete Switching in Small-Area Semiconductors. https://doi.org/10.1016/j.physa.2021.125748

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