Optimizing parameters of Si nanoring arrays for optical absorption enhancement

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The optical property of Silicon nanoring arrays is investigated by finite difference time domain (FDTD) simulation. The effect of geometric parameters, such as the pitch (p), the outer diameter (D) and the inner diameter (d) of nanoring arrays with the thickness of 2 μm on light absorption is studied in detail. The optimized parameters (p=700nm, D=700nm, and d=385nm) which result in optimal integrated absorption are obtained. The optimal integrated absorption of Si nanoring arrays is 71.3% with a 76.0% enhancement as compared with that of the Si thin film with the same thickness. With appropriate parameters, the optical performance of nanoring arrays is superior to that of nanowire arrays. The effect of thickness on optical property of nanoring arrays is also simulated. Finally, a new nanostructure is proposed with the optical performance superior to that of the optimized nanoring arrays. Si nanoring arrays are potential for photovoltaic and photothermal applications with the absorption enhancement compared to the thin film.

Original languageEnglish
Title of host publicationProceedings of the 2nd Thermal and Fluid Engineering Summer Conference, TFESC 2017 and 4th International Workshop on Heat Transfer, IWHT 2017
PublisherBegell House Inc.
Pages2641-2649
Number of pages9
ISBN (Electronic)9781567004700
StatePublished - 2017
Event2nd Thermal and Fluid Engineering Summer Conference, TFESC 2017 and 4th International Workshop on Heat Transfer, IWHT 2017 - Las Vegas, United States
Duration: 2 Apr 20175 Apr 2017

Publication series

NameProceedings of the Thermal and Fluids Engineering Summer Conference
Volume2017-April
ISSN (Electronic)2379-1748

Conference

Conference2nd Thermal and Fluid Engineering Summer Conference, TFESC 2017 and 4th International Workshop on Heat Transfer, IWHT 2017
Country/TerritoryUnited States
CityLas Vegas
Period2/04/175/04/17

Keywords

  • Absorption
  • FDTD
  • Nanoring arrays
  • Optical property
  • Optimization

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