Semiconductor nanowires studied by photocurrent spectroscopy

TL;DR

This paper reviews how photocurrent spectroscopy, including time-resolved methods, helps analyze the optoelectronic properties and mechanisms in semiconductor nanowires, revealing insights into their morphology, material characteristics, and charge dynamics.

Contribution

It provides a comprehensive overview of photocurrent spectroscopy techniques and their application to understanding the physical mechanisms in semiconductor nanowires.

Findings

Photocurrent spectroscopy reveals nanowire morphology and material properties.

Time-resolved spectroscopy uncovers multiple photocurrent generation mechanisms.

The chapter summarizes key physical processes behind photocurrent effects.

Abstract

Photocurrent spectroscopy is a versatile technique to identify and understand the optoelectronic dynamics occurring in semiconductor nanowires. Conventional photocurrent spectroscopy allows to explore the morphology and material properties of nanowires as well as their contact interfaces. Using time-resolved photocurrent spectroscopy one gets additional information on the multiple photocurrent generation mechanisms and their respective timescales. This chapter discusses various aspects of the photocurrent spectroscopy and it summarizes the physical mechanisms behind the photocurrent and photoconductance effects in semiconductor nanowires.