Measurement of light diffusion in ZnO nanowire forests

Abstract

Optimum design of efficient nanowire solar cells requires better understanding of light diffusion in a nanowire array. Here we demonstrate that our recently developed ultrafast all-optical shutter can be used to directly measure the dwell time of light in a nanowire array. Our measurements on disordered ZnO nanowire arrays, "nanowire forests," indicate that the photon mean free path and the dwell time of light can be well predicted from SEM images.

References in corpus (2)

• Ultrafast screening and carrier dynamics in ZnO: Theory and experiment
• Ultrafast all-optical shutter based on two-photon absorption

Cited by in corpus (3)

• An ultrafast reconfigurable nanophotonic switch using wavefront shaping of light in a nonlinear nanomaterial
• Polarization-dependent light extinction in ensembles of polydisperse, vertical semiconductor nanowires: A Mie scattering effective medium
• Ultrafast all-optical gated amplifier based on ZnO nanowire lasing