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Dual-Scale Textured Broadband Si-Based Light Absorber
Various antireflective structures and methods are proposed to solve the optical loss of Si-based absorber devices. Dual-scale structures have received more concern from researchers in recent years. In this study, the finite difference time domain (FDTD) method is employed to investigate deeply the d...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9735742/ https://www.ncbi.nlm.nih.gov/pubmed/36500908 http://dx.doi.org/10.3390/nano12234285 |
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author | Wen, Zhidong Cai, Shunshuo Zhang, Zhe Xu, Ziye Song, Qi Zhang, Kunpeng Li, Man Shi, Haiyan Hou, Yu Zhang, Zichen |
author_facet | Wen, Zhidong Cai, Shunshuo Zhang, Zhe Xu, Ziye Song, Qi Zhang, Kunpeng Li, Man Shi, Haiyan Hou, Yu Zhang, Zichen |
author_sort | Wen, Zhidong |
collection | PubMed |
description | Various antireflective structures and methods are proposed to solve the optical loss of Si-based absorber devices. Dual-scale structures have received more concern from researchers in recent years. In this study, the finite difference time domain (FDTD) method is employed to investigate deeply the dependence of optical response on the geometric shape and size of structures. The micron cone shows lower reflectivity than other micron structures. Additionally, the lowest reflectivity region moves with the increasing height size of the cone structure. We proposed creatively a nanoripple-cone structure that maintains low reflectivity properties under varying incident angles whether in the visible region or the near-infrared region. Furthermore, the lower reflectivity is obtained with increasing micron cone and decreasing nanoripple. Finally, the dual-scale nanoripple-cone is fabricated directly and cost-effectively by a femtosecond laser instead of a two-step texture-on-texture way. The measured result shows that the high absorption above 98% extends to the mid-infrared region. This study provides directions for the fabrication of wideband Si-based absorber devices to reduce reflectivity, which exhibits a wide application potential and promotes the evolution of multi-laser processing. |
format | Online Article Text |
id | pubmed-9735742 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-97357422022-12-11 Dual-Scale Textured Broadband Si-Based Light Absorber Wen, Zhidong Cai, Shunshuo Zhang, Zhe Xu, Ziye Song, Qi Zhang, Kunpeng Li, Man Shi, Haiyan Hou, Yu Zhang, Zichen Nanomaterials (Basel) Article Various antireflective structures and methods are proposed to solve the optical loss of Si-based absorber devices. Dual-scale structures have received more concern from researchers in recent years. In this study, the finite difference time domain (FDTD) method is employed to investigate deeply the dependence of optical response on the geometric shape and size of structures. The micron cone shows lower reflectivity than other micron structures. Additionally, the lowest reflectivity region moves with the increasing height size of the cone structure. We proposed creatively a nanoripple-cone structure that maintains low reflectivity properties under varying incident angles whether in the visible region or the near-infrared region. Furthermore, the lower reflectivity is obtained with increasing micron cone and decreasing nanoripple. Finally, the dual-scale nanoripple-cone is fabricated directly and cost-effectively by a femtosecond laser instead of a two-step texture-on-texture way. The measured result shows that the high absorption above 98% extends to the mid-infrared region. This study provides directions for the fabrication of wideband Si-based absorber devices to reduce reflectivity, which exhibits a wide application potential and promotes the evolution of multi-laser processing. MDPI 2022-12-01 /pmc/articles/PMC9735742/ /pubmed/36500908 http://dx.doi.org/10.3390/nano12234285 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Wen, Zhidong Cai, Shunshuo Zhang, Zhe Xu, Ziye Song, Qi Zhang, Kunpeng Li, Man Shi, Haiyan Hou, Yu Zhang, Zichen Dual-Scale Textured Broadband Si-Based Light Absorber |
title | Dual-Scale Textured Broadband Si-Based Light Absorber |
title_full | Dual-Scale Textured Broadband Si-Based Light Absorber |
title_fullStr | Dual-Scale Textured Broadband Si-Based Light Absorber |
title_full_unstemmed | Dual-Scale Textured Broadband Si-Based Light Absorber |
title_short | Dual-Scale Textured Broadband Si-Based Light Absorber |
title_sort | dual-scale textured broadband si-based light absorber |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9735742/ https://www.ncbi.nlm.nih.gov/pubmed/36500908 http://dx.doi.org/10.3390/nano12234285 |
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