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Enhancing the near-infrared spectral response of silicon optoelectronic devices via up-conversion

Richards, Bryce; Shalav, Avi

Description

A silicon-based optoelectronic device that exhibits an enhanced response to subbandgap light is described. The device structure consists of a bifacial silicon solar cell with an upconverting (UC) layer attached to the rear. Erbium-doped sodium yttrium fluoride (NaY0.8 F4: Er0.23+) phosphors are the optically active centers responsible for the UC luminescence. The unoptimized device is demonstrated to respond effectively to wavelengths (λ) in the range of 1480-1580 nm with an external quantum...[Show more]

dc.contributor.authorRichards, Bryce
dc.contributor.authorShalav, Avi
dc.date.accessioned2015-12-10T21:56:25Z
dc.identifier.issn0018-9383
dc.identifier.urihttp://hdl.handle.net/1885/39422
dc.description.abstractA silicon-based optoelectronic device that exhibits an enhanced response to subbandgap light is described. The device structure consists of a bifacial silicon solar cell with an upconverting (UC) layer attached to the rear. Erbium-doped sodium yttrium fluoride (NaY0.8 F4: Er0.23+) phosphors are the optically active centers responsible for the UC luminescence. The unoptimized device is demonstrated to respond effectively to wavelengths (λ) in the range of 1480-1580 nm with an external quantum efficiency (EQE) of 3.4% occurring at 1523 nm at an illumination intensity of 2.4 W/cm2 (EQE = 1.4 × 10-2 cm2/ W). An analysis of the optical losses reveals that the luminescence quantum efficiency (LQE) of the device is 16.7% at 2.4 W/cm2 of 1523-nm excitation (LQE = 7.0 × 10-2 cm2/ W), while further potential device improvements indicate that an EQE of 14.0% (5.8 × 10-2 cm2/W) could be realistically achieved.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE Inc)
dc.sourceIEEE Transactions on Electron Devices
dc.subjectKeywords: Energy gap; Luminescence; Optical losses; Photovoltaic cells; Quantum efficiency; Silicon solar cells; Erbium-doped sodium yttrium fluoride; External quantum efficiency; Up-conversion; Optoelectronic devices Luminescence; Photovoltaics (PVs); Silicon solar cells; Up-conversion (UC)
dc.titleEnhancing the near-infrared spectral response of silicon optoelectronic devices via up-conversion
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume54
dc.date.issued2007
local.identifier.absfor090699 - Electrical and Electronic Engineering not elsewhere classified
local.identifier.ariespublicationu3379551xPUB177
local.type.statusPublished Version
local.contributor.affiliationRichards, Bryce, College of Engineering and Computer Science, ANU
local.contributor.affiliationShalav, Avi, Delft University of Technology
local.description.embargo2037-12-31
local.bibliographicCitation.issue10
local.bibliographicCitation.startpage2679
local.bibliographicCitation.lastpage2684
local.identifier.doi10.1109/TED.2007.903197
local.identifier.absseo970122 - Expanding Knowledge in Philosophy and Religious Studies
dc.date.updated2015-12-09T07:37:26Z
local.identifier.scopusID2-s2.0-35148888969
CollectionsANU Research Publications

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