Observation of Space-Charge-Limited Transport in InAs Nanowires

TL;DR

This paper demonstrates space-charge-limited transport in InAs nanowires, using experimental data and theory to determine mobility and carrier concentration, revealing diameter dependence and thermal effects.

Contribution

It provides experimental evidence of space-charge-limited transport in InAs nanowires and links transport properties to nanowire diameter and thermal behavior.

Findings

Space-charge-limited transport observed in InAs nanowires

Mobility and carrier concentration depend on nanowire diameter

Joule heating induces failure, indicating thermal effects

Abstract

Recent theory and experiment have suggested that space-charge-limited transport should be prevalent in high aspect-ratio semiconducting nanowires. We report on InAs nanowires exhibiting this mode of transport and utilize the underlying theory to determine the mobility and effective carrier concentration of individual nanowires, both of which are found to be diameter-dependent. Intentionally induced failure by Joule heating supports the notion of space-charge-limited transport and proposes reduced thermal conductivity due to the nanowires polymorphism.