Surface quasi periodic and random structures based on nanomotor lithography for light trapping
Abstract
We compare the characteristics of two types of patterns obtained with two azopolymer materials: a Gaussian random pattern and a quasi-random grating pattern. The surface structurations have been obtained with a simple bottom-up technique by illuminating azopolymer thin films with a single laser beam. We demonstrate the interesting generated properties of these two surfaces. In particular, the surface with quasi-random gratings can address beam splittings for light coupling in different directions in an ultra-thin film. We use these two surfaces as a mold and replicate them on a transparent elastomeric material and we demonstrate a very good light entrapment. We also show that the efficiency of light trapping is 20% better with the quasi-random gratings than with the Gaussian random surface, and is close to 40%.
Cite
@article{arxiv.1706.06633,
title = {Surface quasi periodic and random structures based on nanomotor lithography for light trapping},
author = {Sh. Golghasemi Sorkhabi and S. Ahmadi-Kandjani and F. Cousseau and M. Loumaigne and S. Zielinska and E. Ortyl and R. Barille},
journal= {arXiv preprint arXiv:1706.06633},
year = {2017}
}
Comments
15 pages, 8 figures, published in J. of Applied Physics