Infrared-to-visible upconversion luminescence in SrF2:Er powders upon excitation of the 4I13/2 level

Advancing the upconversion materials field relies on accurate and contrastable photoluminescence efficiency measurements, which are characterised by the absolute upconversion quantum yield (UCQY). However, the methodology for such measurements cannot be extrapolated directly from traditional photoluminescence quantum yield techniques, primarily due to issues that arise from the non-linear behaviour of the UC process. Subsequently, no UCQY standards exist, and significant variations in their reported magnitude can occur between laboratories. In this work, our aim is to provide a path for determining and reporting the most reliable UCQYs possible, by addressing all the effects and uncertainties that influence its value. Here the UCQY standard, at a given excitation power density, is defined under a range of stated experimental conditions, environmental conditions, material properties, and influential effects that have been estimated or corrected for. A broad range of UCQYs reported for various UC materials are scrutinized and categorized based on our assertion of the provided information associated with each value. This is crucial for improved comparability with other types of photoluminescent materials, and in addition, the next generation of UC materials can be built on top of these reliable standards.

show abstract

“… eUCQY [ 196 ] SrF 2 : (8.8%)Er 3+ Powder - - *>0.1 ~1500 (*Gauss) 510 0.19 (*360-720) 3.73 x10 −4 A, B, C?, D?, F?, H?, I, J C? eUCQY [ 197 ] …”

Section: Reviewing the Ucqy Reporting And Measurement Techniques In The Literaturementioning

confidence: 99%

The upconversion quantum yield (UCQY): a review to standardize the measurement methodology, improve comparability, and define efficiency standards

Jones

Gakamsky

Marqués-Hueso

2021

Science and Technology of Advanced Materials

View full text Add to dashboard Cite

show abstract

“…Интенсивная апконверсионная люминесценция характерна для фторидных материалов со структурой флюорита MF 2 : RE (M = Ca, Sr, Ba) [7,[9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. Это обусловлено тем, что данные материалы характеризуются низкой энергией фонона (∼ 466 cm −1 , CaF 2 [25]) и склонностью ионов активаторов к образованию кластеров даже при их малых концентрациях [26][27][28][29].…”

Section: Introductionunclassified

“…В настоящее время разработке методов синтеза фторидных материалов со структурой флюорита, легированных ионами Er 3+ , а также исследованию в них процессов апконверсионной люминесценции посвящено значительное количество научных работ [7,[12][13][14][15][16][17][18][19][20][21]. Ранее нами была исследована апконверсионная люминесценция в порошках SrF 2 : Er и SrF 2 : Er, Yb (∼ 366 cm −1 , SrF 2 [25]) при возбуждении лазерным излучением с длиной волны 1531.8 nm [19,21]. Как показывают проведённые исследования [30], даже небольшое отличие в энергии фононов между SrF 2 (∼ 366 cm −1 ) и СaF 2 (∼ 466 cm −1 ) приводит к различному распределению энергии возбуждения по верхним энергетическим уровням ионов Er 3+ и, как следствие этого, к различным соотношениям интенсивностей между спектральными линиями.…”

Section: Introductionunclassified

Характеристики апконверсионной люминесценции порошков CaF-=SUB=-2-=/SUB=- : Er при возбуждении лазерным излучением с длиной волны 1.5 μm

Ляпин¹,

Рябочкина²,

Гущин³

et al. 2020

Журнал Технической Физики

View full text Add to dashboard Cite

The characteristics of upconversion luminescence of CaF2:Er crystalline powders were investigated upon excitation of Er3+ ions to the 4I13/2 level by laser radiation at 1531.8 nm. The energy yield values of upconversion luminescence were determined for the spectral ranges 380–780 and 380–1100 nm. It was found that upconversion luminescence of CaF2:Er powders with concentrations of 0.5, 2, 4, 6, 8, 10, 11, 13, 15, and 17% of Er3+ ions is characterized by correlated color temperatures of about 5100, 2142, 1726, 1738, 1773, 1757, 1762, 1765, 1735, and 1714 K, respectively.

show abstract

“…[11,12,19–25]). The use of other wavelengths for pumping is less frequent ([26–29] and references therein) but could provide new insight into spectroscopy of these materials. In the present research, we use a semiconductor laser diode operating at 808 nm with a spectral half width of ≈3 nm.…”

Section: Introductionmentioning

confidence: 99%

Intense Anti‐Stokes Emission from Erbium Ions in Gallium Lanthanum Sulphide–Oxide Glass in the Visible Spectral Range

Voronov

Певцов

Скворцов

et al. 2020

Physica Status Solidi (a)

View full text Add to dashboard Cite

Photoluminescence spectra are investigated in erbium-doped GaLaS(O) glasses. Under optical pumping by a semiconductor laser diode operating at 808 nm, the samples demonstrate intense "green" emission bands centered at around 525 and 550 nm as well as much weaker "red" emission band centered at around 664 nm. The intensities of "green" and "red" emission bands are investigated as a function of pumping intensity. The cascade mechanism of generation of radiation from higher lying levels of the 4f-shell Er 3þ ions is discussed to interpret these experimental results and the theoretical description of the phenomenon is developed.

show abstract

Infrared-to-visible upconversion luminescence in SrF₂:Er powders upon excitation of the ⁴I_13/2 level

Cited by 23 publications

References 33 publications

The upconversion quantum yield (UCQY): a review to standardize the measurement methodology, improve comparability, and define efficiency standards

The upconversion quantum yield (UCQY): a review to standardize the measurement methodology, improve comparability, and define efficiency standards

Характеристики апконверсионной люминесценции порошков CaF-=SUB=-2-=/SUB=- : Er при возбуждении лазерным излучением с длиной волны 1.5 μm

Intense Anti‐Stokes Emission from Erbium Ions in Gallium Lanthanum Sulphide–Oxide Glass in the Visible Spectral Range

Contact Info

Product

Resources

About

Infrared-to-visible upconversion luminescence in SrF2:Er powders upon excitation of the 4I13/2 level

Cited by 23 publications

References 33 publications

The upconversion quantum yield (UCQY): a review to standardize the measurement methodology, improve comparability, and define efficiency standards

The upconversion quantum yield (UCQY): a review to standardize the measurement methodology, improve comparability, and define efficiency standards

Характеристики апконверсионной люминесценции порошков CaF-=SUB=-2-=/SUB=- : Er при возбуждении лазерным излучением с длиной волны 1.5 &mu;m

Intense Anti‐Stokes Emission from Erbium Ions in Gallium Lanthanum Sulphide–Oxide Glass in the Visible Spectral Range

Contact Info

Product

Resources

About

Infrared-to-visible upconversion luminescence in SrF₂:Er powders upon excitation of the ⁴I_13/2 level

Характеристики апконверсионной люминесценции порошков CaF-=SUB=-2-=/SUB=- : Er при возбуждении лазерным излучением с длиной волны 1.5 μm