Large area and broadband gold-black absorber and the nanocone-like array model

Yan Hao, Yanze Gao, Suhui Yang*, Zhuo Li, Yingqi Liao, Xin Wang, Yongming Zhao, Jinying Zhang

*Corresponding author for this work

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

1 Citation (Scopus)

Abstract

Broadband light absorbers are attractive for their applications in photodetection and thermal detectors. Metal-black coatings have been experimentally proven to have broadband light absorption characteristic. A large area and broadband gold-black coating was fabricated by a low-cost but effective sputtering process. The gold-black films exhibited reduced reflection of 4.81%, 2.48% and 1.93% for sputtering pressure of 50, 65 and 80 Pa in 300-800 nm spectral range, and their size reached 4- inches. A three-dimensional nanocone-like array model was proposed for the gold-black films. Then, the nanocone array of this model was embedded with many gold nanoparticles due to the rough surface of the gold-black films. The results indicated this proposed model of nanocone-like array embedded with nanoparticles can be a good tool to design broadband gold-black absorbers.

Original languageEnglish
Title of host publicationAOPC 2021
Subtitle of host publicationOptoelectronics and Nanophotonics
EditorsZhiping Zhou, Yidong Huang
PublisherSPIE
ISBN (Electronic)9781510649996
DOIs
Publication statusPublished - 2021
Event2021 Applied Optics and Photonics China: Optoelectronics and Nanophotonics, AOPC 2021 - Beijing, China
Duration: 20 Jun 202122 Jun 2021

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12062
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference2021 Applied Optics and Photonics China: Optoelectronics and Nanophotonics, AOPC 2021
Country/TerritoryChina
CityBeijing
Period20/06/2122/06/21

Keywords

  • Gold-black absorber
  • Nanocone-like array
  • Reflection
  • Simulation

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