NIR and MIR Absorption of Ultra-Black Silicon (UBS). Application to High Emissivity, All-Silicon, Light Source

  • Sreyash Sarkar
  • , Ahmed A. Elsayed
  • , Elyes Nefzaoui
  • , Jeremie Drevillon
  • , Philippe Basset
  • , Frederic Marty
  • , Momen Anwar
  • , Yiting Yu
  • , Jiancun Zhao
  • , Xichen Yuan
  • , Zhongzhu Liang
  • , Diaa Khalil
  • , Yasser M. Sabry
  • , Tarik Bourouina

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

14 Scopus citations

Abstract

We present the Near-Infra-Red (NIR) and Mid-Infrared (MIR) absorption properties of Ultra-Black Silicon obtained by wafer-level cryogenic plasma processing. We found that when using highly-doped silicon, the spectral range of near-unity full absorption of light is extended from the visible range till a wavelength of 10\ \mu \mathrm{m}. This MIR wavelength range coincides with that of the maximum of black-body radiation from room temperature up to a few thousand Kelvin. Therefore, according to Kirchhoff's Law, we take advantage of the enhanced properties of black silicon to realize ultra-compact light-sources of high efficiency, which are operated in combination with a MEMS-FTIR spectrometer.

Original languageEnglish
Title of host publication2019 IEEE 32nd International Conference on Micro Electro Mechanical Systems, MEMS 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages860-862
Number of pages3
ISBN (Electronic)9781728116105
DOIs
StatePublished - Jan 2019
Externally publishedYes
Event32nd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2019 - Seoul, Korea, Republic of
Duration: 27 Jan 201931 Jan 2019

Publication series

NameProceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
Volume2019-January
ISSN (Print)1084-6999

Conference

Conference32nd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2019
Country/TerritoryKorea, Republic of
CitySeoul
Period27/01/1931/01/19

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