Tb3+/Eu3+: YF3 nanophase embedded glass ceramics: Structural characterization, tunable luminescence and temperature sensing behavior

Chen, Daqin; Wang, Zhongyi; Zhou, Yang; Huang, Ping; Ji, Zhenguo

doi:10.1016/j.jallcom.2015.06.030

Cited by 95 publications

(19 citation statements)

References 38 publications

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“…Figure C is the estimated FIR value derived from the PL emission spectrum under different temperatures. The FIR value of the two thermally coupled levels is based on the Boltzmann distribution theory, as follows:

FIR = \frac{I_{H}}{I_{S}} = A \exp (\frac{- normalΔ E}{kT}),

where Δ E , T , A and k denote the energy gap of thermally coupled levels, temperature, constant and Boltzmann constant, respectively. The I S and I H represent the 4 S 3/2 → 4 I 15/2 (537‐580 nm) and 2 H 11/2 → 4 I 15/2 (510‐537 nm) transition integrated emission intensities, respectively.…”

Section: Resultsmentioning

confidence: 99%

NUV light induced visible emission in Er³⁺‐activated NaSrLa(MoO₄)O₃ phosphors for green LEDs and thermometer

et al. 2019

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Er3+‐activated NaSrLa(MoO4)O3 phosphors were synthesized by a traditional solid‐state reaction technique, which exhibited bright green emissions ascribing to the (2H11/2, 4S3/2) → 4I15/2 transitions of Er3+ ions under 377 nm excitation. The luminescence intensity increased with increasing the Er3+ ion concentration and achieved its maximum value when the doping concentration was 4 mol%. Moreover, the critical distance was estimated to be 25.32 Å, and the dipole‐dipole interaction played a significant role in NR energy transfer between Er3+ ions in NaSrLa(MoO4)O3 host lattices. At a forward bias current of 100 mA, the Light Emitting Diode (LED) device emitted a bright green emission with the color coordinate of (0.2547, 0.5996) that can be observed by the naked eye. Besides, based on the thermally coupled levels of 2H11/2 and 4S3/2, the temperature sensing performances of the prepared phosphors in the temperature range of 303‐483 K were studied using the fluorescence intensity ratio technique. The maximum sensor sensitivity was about 0.0150 K−1 when the temperature was 483 K, and the Er3+ ion concentration largely influenced the sensor sensitivity of studied samples. Furthermore, the prepared phosphors exhibited excellent water resistance and thermal stability behavior. These characteristics demonstrated that the Er3+ activated NaSrLa(MoO4)O3 phosphors were dual‐functional materials for solid‐state illumination and non‐contact temperature measurement.

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FIR = \frac{I_{H}}{I_{S}} = A \exp (\frac{- normalΔ E}{kT}),

Section: Resultsmentioning

confidence: 99%

NUV light induced visible emission in Er³⁺‐activated NaSrLa(MoO₄)O₃ phosphors for green LEDs and thermometer

et al. 2019

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“…[1][2][3][4][5][6] Searching for luminescent materials with high temperature sensitive FIR is the key for developing high-performance optical thermometry. An ideal FIR temperature sensing material should exhibit two channel by crossing the excited state and the ground state, and such thermal-quenching behavior highly depends on the ionic radius and electronegativity of the lanthanide and transition metal ions.…”

Section: Introductionmentioning

confidence: 99%

A Novel Optical Thermometry Strategy Based on Diverse Thermal Response from Two Intervalence Charge Transfer States

Gao

Huang

Lin

et al. 2016

Adv Funct Materials

539

206

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3139wileyonlinelibrary.com discriminable emission peaks as the monitored signals, and to suppress absolute and relative detecting errors, high absolute and relative temperature sensitivities are required.In this aspect, conventional investigations focus on the thermally coupled level pairs (TCL) of rare earth ions (for example, 2 H 11/2 and 4 S 3/2 level for Er 3+). [7][8][9][10][11][12][13][14][15] Typically, with variation of temperature, population in the upper and lower levels of TCL would change oppositely, inducing variation in FIR of these two levels. For this type of temperature sensing materials, a narrow energy gap between TCL would favor the absolute temperature sensitivity ( S a ), but be harmful to the relative temperature sensitivity ( S r ). In addition, the narrow energy gap would induce overlap of the two monitored emission peaks, resulting in an inferior signal discriminability. [ 9,12 ] In contract, a wide energy gap between TCL would benefi t S r and the signal discriminability, but weaken the thermal coupling of TCL, leading to a low S a . [ 13,15 ] Generally speaking, in the TCL-based optical thermometry, simultaneously promoting S a , S r and signal discriminability is almost impossible.Other kinds of thermometry strategy have also been introduced into the optical thermometric technique. For example, the phonon assisted energy transfer between Eu 3+ and Tb 3+ ions has been utilized in optical thermometry. [16][17][18][19] However, this kind of thermometry is usually applicable only at temperature below 320 K. Nanocomposites containing quantum dots and rare earth ions have also been applied as thermometric materials relying on the different thermal quenching behaviors of quantum dots and rare earth ions. [ 20,21 ] However, FIR of these materials is easily infl uenced by other environment parameters (such as pH value), which would introduce error in temperature detection. Apparently, searching for new thermometry strategy to develop high-performance luminescent temperature sensing materials is highly desired.In previous studies, the metal-to-metal intervalence charge transfer (IVCT) processes between lanthanide (Pr 3+ or Tb 3+ ) and d 0 electron confi gured transition metal ions (Ti 4+ , V 5+ , Nb 5+ , Mo 6+ , or W 6+ ) in oxide crystals have been demonstrated to be an effective pathway to excite the corresponding lanthanide ions. [22][23][24][25][26] Moreover, IVCT can provide an effi cient quenching A Novel Optical Thermometry Strategy Based on Diverse Thermal Response from Two Intervalence Charge Transfer StatesYan Gao , Feng Huang , * Hang Lin , Jiangcong Zhou , Ju Xu , and Yuansheng Wang * In this work, a novel thermometry strategy based on the diversity in thermal quenching behavior of two intervalence charge transfer (IVCT) states in oxide crystals is proposed, which provides a promising route to design selfreferencing optical temperature sensing material with superior temperature sensitivity and signal discriminability.

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“…Moreover, upconversion materials doped with rare earth ions have been used extensively because of their attractive applications such as lighting, 1 multiple color displays, 2 sensors 3 and biological 4 and optical thermal sensitivity. [5][6][7][8][9][10][11][12][13] Dye doped PMMA (polymethyl methacrylate) nanowire uorescence guiding has been applied to a series of integrated microstructural optical devices in one dimension, including nano-lasers, micro-optical sensors and ber biosensors. [14][15][16][17][18] Due to their high efficiency, uorescence photons can be coupled into guided modes of microbers.…”

Section: Introductionmentioning

confidence: 99%

Dispersing upconversion nanocrystals in PMMA microfiber: a novel methodology for temperature sensing

et al. 2018

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Tb3+/Eu3+: YF3 nanophase embedded glass ceramics: Structural characterization, tunable luminescence and temperature sensing behavior

Cited by 95 publications

References 38 publications

NUV light induced visible emission in Er³⁺‐activated NaSrLa(MoO₄)O₃ phosphors for green LEDs and thermometer

NUV light induced visible emission in Er³⁺‐activated NaSrLa(MoO₄)O₃ phosphors for green LEDs and thermometer

A Novel Optical Thermometry Strategy Based on Diverse Thermal Response from Two Intervalence Charge Transfer States

Dispersing upconversion nanocrystals in PMMA microfiber: a novel methodology for temperature sensing

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Tb3+/Eu3+: YF3 nanophase embedded glass ceramics: Structural characterization, tunable luminescence and temperature sensing behavior

Cited by 95 publications

References 38 publications

NUV light induced visible emission in Er3+‐activated NaSrLa(MoO4)O3 phosphors for green LEDs and thermometer

NUV light induced visible emission in Er3+‐activated NaSrLa(MoO4)O3 phosphors for green LEDs and thermometer

A Novel Optical Thermometry Strategy Based on Diverse Thermal Response from Two Intervalence Charge Transfer States

Dispersing upconversion nanocrystals in PMMA microfiber: a novel methodology for temperature sensing

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NUV light induced visible emission in Er³⁺‐activated NaSrLa(MoO₄)O₃ phosphors for green LEDs and thermometer

NUV light induced visible emission in Er³⁺‐activated NaSrLa(MoO₄)O₃ phosphors for green LEDs and thermometer