Broadband radiative energy absorption using a silicon nanowire forest with silver nanoclusters for thermal energy conversion

Beom Seok Kim, Sikandar H. Tamboli, Jae Baek Han, Taehwan Kim, Hyung Hee Cho

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Heat transfer based on radiative energy absorption and thermal dissipation is important in the design of energy conversion and transfer systems. We studied in the design of radiative energy absorber for efficient energy harvesting and transfer using a nanoscale interface modification technology. We presented that silver nanoclusters assisted silicon nanowires (SiNWs) forest could be feasible for radiative energy absorption in a broadband spectral region. A drastic increase of radiative energy absorption could be obtained in the near infrared wavelength region with accompanying quasi-perfect absorption (higher than 95%) of ultra-violet and visible range of the irradiation spectrum. All of surface manipulations were based on top-down metal-assisted chemical etching feasible under room-temperature conditions to synthesize SiNWs with silver nanoclusters. The spectral absorbance characteristics were elucidated for characteristic lengths of SiNWs, clustering of silver nanoparticles, orientation of the substrate, and single as well as double-sided silver nanoclusters orientations dominate in spectral absorbance characteristics. The results were also presented for guaranteeing efficient solar-thermal converting components with 92.4% solar absorption performance under AM1.5D condition. Surface modification and optimization will be helpful to improve the performances of solar energy conversion systems and various heat transfer systems.

Original languageEnglish
Pages (from-to)267-272
Number of pages6
JournalInternational Journal of Heat and Mass Transfer
Volume82
DOIs
Publication statusPublished - 2015 Jan 1

Fingerprint

Nanoclusters
energy absorption
energy conversion
Energy absorption
Silicon
nanoclusters
Thermal energy
Energy conversion
Silver
thermal energy
Nanowires
nanowires
silver
broadband
silicon
Energy transfer
heat transfer
Heat transfer
solar energy conversion
Energy harvesting

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

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abstract = "Heat transfer based on radiative energy absorption and thermal dissipation is important in the design of energy conversion and transfer systems. We studied in the design of radiative energy absorber for efficient energy harvesting and transfer using a nanoscale interface modification technology. We presented that silver nanoclusters assisted silicon nanowires (SiNWs) forest could be feasible for radiative energy absorption in a broadband spectral region. A drastic increase of radiative energy absorption could be obtained in the near infrared wavelength region with accompanying quasi-perfect absorption (higher than 95{\%}) of ultra-violet and visible range of the irradiation spectrum. All of surface manipulations were based on top-down metal-assisted chemical etching feasible under room-temperature conditions to synthesize SiNWs with silver nanoclusters. The spectral absorbance characteristics were elucidated for characteristic lengths of SiNWs, clustering of silver nanoparticles, orientation of the substrate, and single as well as double-sided silver nanoclusters orientations dominate in spectral absorbance characteristics. The results were also presented for guaranteeing efficient solar-thermal converting components with 92.4{\%} solar absorption performance under AM1.5D condition. Surface modification and optimization will be helpful to improve the performances of solar energy conversion systems and various heat transfer systems.",
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Broadband radiative energy absorption using a silicon nanowire forest with silver nanoclusters for thermal energy conversion. / Kim, Beom Seok; Tamboli, Sikandar H.; Han, Jae Baek; Kim, Taehwan; Cho, Hyung Hee.

In: International Journal of Heat and Mass Transfer, Vol. 82, 01.01.2015, p. 267-272.

Research output: Contribution to journalArticle

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AU - Tamboli, Sikandar H.

AU - Han, Jae Baek

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AU - Cho, Hyung Hee

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AB - Heat transfer based on radiative energy absorption and thermal dissipation is important in the design of energy conversion and transfer systems. We studied in the design of radiative energy absorber for efficient energy harvesting and transfer using a nanoscale interface modification technology. We presented that silver nanoclusters assisted silicon nanowires (SiNWs) forest could be feasible for radiative energy absorption in a broadband spectral region. A drastic increase of radiative energy absorption could be obtained in the near infrared wavelength region with accompanying quasi-perfect absorption (higher than 95%) of ultra-violet and visible range of the irradiation spectrum. All of surface manipulations were based on top-down metal-assisted chemical etching feasible under room-temperature conditions to synthesize SiNWs with silver nanoclusters. The spectral absorbance characteristics were elucidated for characteristic lengths of SiNWs, clustering of silver nanoparticles, orientation of the substrate, and single as well as double-sided silver nanoclusters orientations dominate in spectral absorbance characteristics. The results were also presented for guaranteeing efficient solar-thermal converting components with 92.4% solar absorption performance under AM1.5D condition. Surface modification and optimization will be helpful to improve the performances of solar energy conversion systems and various heat transfer systems.

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