Ultra-high photoluminescent quantum yield of β-NaYF4: 10% Er3+via broadband excitation of upconversion for photovoltaic devices

Sean K. W. Mac Dougall, Aruna Ivaturi, Jose Marques-Hueso, Karl W. Krämer, Bryce S. Richards

Research output: Contribution to journalArticle

59 Citations (Scopus)

Abstract

The upconversion photoluminescent quantum yield (PLQY) of erbium-doped hexagonal sodium yttrium fluoride (β-NaYF 4 : 10% Er 3+ ) was measured under broadband excitation with full width half maxima ranging from 12 to 80 nm. A novel method was developed to increase the bandwidth of excitation, while remaining independent of power via normalization to the air mass 1.5 direct solar spectrum. The measurements reveal that by broadening the excitation spectrum a higher PLQY can be achieved at lower solar concentrations. The highest PLQY of 16.2 ± 0.5% was achieved at 2270 ± 100 mW mm.2 and is the highest ever measured.
LanguageEnglish
PagesA879-A887
Number of pages9
JournalOptics Express
Volume20
Issue numberS6
DOIs
Publication statusPublished - 5 Nov 2012

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broadband
excitation
solar spectra
air masses
yttrium
erbium
fluorides
sodium
bandwidth

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Mac Dougall, Sean K. W. ; Ivaturi, Aruna ; Marques-Hueso, Jose ; Krämer, Karl W. ; Richards, Bryce S. / Ultra-high photoluminescent quantum yield of β-NaYF4: 10% Er3+via broadband excitation of upconversion for photovoltaic devices. In: Optics Express. 2012 ; Vol. 20, No. S6. pp. A879-A887.
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Ultra-high photoluminescent quantum yield of β-NaYF4: 10% Er3+via broadband excitation of upconversion for photovoltaic devices. / Mac Dougall, Sean K. W.; Ivaturi, Aruna; Marques-Hueso, Jose; Krämer, Karl W.; Richards, Bryce S.

In: Optics Express, Vol. 20, No. S6, 05.11.2012, p. A879-A887.

Research output: Contribution to journalArticle

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