Insight into temperature-dependent photoluminescence of LaOBr: Ce3+, Tb3+ phosphor as a ratiometric and colorimetric luminescent thermometer

Zhang, Xinguo; Wu, Zhan‐Chao; Mo, Fuwang; Li, Ning; Guo, Ziying; Zhu, Zhenpeng

doi:10.1016/j.dyepig.2017.06.032

Cited by 51 publications

(11 citation statements)

References 34 publications

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“…The significant temperature-dependent emission differences of the two peaks may be ascribed to the different sensitivities of the Bi 3+ emission centers located in Ca and Ba sites to temperature. A ratiometric fluorescence sensor can detect temperature change based on the fluorescence intensity ratio (FIR) variation of two different emission peaks. − Here, the CBZGO:0.01Bi 3+ phosphor could meet the requirement of the FIR temperature sensor. The relationship between FIR ( I low / I high ) and temperature can be described as follows: , where I low and I high are the integrated emission intensities of the low and high energy emission peaks, respectively.…”

Section: Resultsmentioning

confidence: 99%

Yellow/Orange-Emitting ABZn₂Ga₂O₇:Bi³⁺(A = Ca, Sr; B = Ba, Sr) Phosphors: Optical Temperature Sensing and White Light-Emitting Diode Applications

et al. 2020

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Recently, there has been growing interest in developing Bi3+-activated luminescence materials for optoelectronic applications. Herein, new yellow/orange-emitting ABZn2Ga2O7:Bi3+ (ABZGO, A = Ca, Sr; B = Ba, Sr) phosphors with tunable optical properties are synthesized by an alkaline earth cation substitution. When Sr2+ substitutes Ca2+ and Ba2+, the excitation wavelength has a red shift from 325 to 363 nm, matching well with the n-UV chip based white light-emitting diodes (WLEDs). CaBaZn2Ga2O7:0.01Bi3+ (CBZGO:0.01Bi3+) exhibits two evident emission peaks at 570 and 393 nm originating from the respective occupation of Ca and Ba sites by Bi3+ ions. The optical tuning of the CBZGO:Bi3+ phosphor is achieved by changing the Bi3+ doping content and excitation wavelength based on the selected site occupation. Differently, both SrBaZn2Ga2O7:0.01Bi3+ (SBZGO:0.01Bi3+) and Sr2Zn2Ga2O7:0.01Bi3+ (SZGO:0.01Bi3+) phosphors exhibit a single broad emission band, peaking at 600 and 577 nm, respectively. Two different Bi3+ sites are also verified respectively in SBZGO and SZGO hosts by the Gaussian fitting of the asymmetric PL spectra and lifetime analysis. The different luminescence behaviors of ABZGO:0.01Bi3+ phosphors should be ascribed to the synergistic effect of the centroid shift, crystal-field splitting, and Stokes shift. Moreover, the temperature-dependent PL spectra reveal that cation substitutions of Sr2+ for Ca2+ and Ba2+ can efficiently improve the thermal stability of ABZGO:0.01Bi3+ phosphors. In view of different thermal responses to various temperatures for two emission peaks of the CBZGO:0.01Bi3+ phosphor, an optical thermometer is designed and has a good relative sensitivity (S r = 1.453% K–1) at 298 K. Finally, a WLED with CRI = 97.9 and CCT = 3932 K is obtained by combining SZGO:0.01Bi3+ and BAM:Eu2+ phosphors with a 370 nm n-UV chip, demonstrating that SZGO:0.01Bi3+ is an excellent yellow-orange-emitting phosphor for n-UV WLED devices. This work stimulates the exploration of optical tuning by cation substitution to obtain remarkable luminescence materials for optical temperature sensing and WLED applications.

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Section: Resultsmentioning

confidence: 99%

Yellow/Orange-Emitting ABZn₂Ga₂O₇:Bi³⁺(A = Ca, Sr; B = Ba, Sr) Phosphors: Optical Temperature Sensing and White Light-Emitting Diode Applications

et al. 2020

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“…Similarly, an increased tendency in the green downconversion emission was produced as the temperature rose from 138 to 308 K (Figure S18a). This observation suggests that multiphonon-assisted energy transfer was present between Ce 3+ and Mn 2+ . At low temperatures, the energy transfer from Ce 3+ to Mn 2+ is suppressed because the energy mismatch between the 4f5d band of Ce 3+ and 4 T 1 energy level of Mn 2+ cannot be consumed by the lattice vibration.…”

Section: Resultsmentioning

confidence: 94%

“…This observation suggests that multiphonon-assisted energy transfer was present between Ce 3+ and Mn 2+ . 63 At low temperatures, the energy transfer from Ce 3+ to Mn 2+ is suppressed because the energy mismatch between the 4f5d band of Ce 3+ and 4 T 1 energy level of Mn 2+ cannot be consumed by the lattice vibration. However, low temperatures can effectively reduce the perturbation of the excited Mn 2+ dopants from the surrounding environment, thereby resulting in a gradual increase in the lifetime of the Mn 2+ luminescence from 29.5 to 34.1 ms when decreasing the temperature from 308 to 138 K, respectively (Figure S18b).…”

Section: Acs Applied Materials and Interfacesmentioning

confidence: 99%

Dual-Mode Long-Lived Luminescence of Mn²⁺-Doped Nanoparticles for Multilevel Anticounterfeiting

Liu

Qiang

et al. 2019

ACS Appl. Mater. Interfaces

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Luminescent nanoparticles with dual-mode long-lived luminescence are of great importance for their attractive applications in biosensing, bioimaging, and data encoding. Herein, we report the realization of up-and downconversion emission of Mn 2+ dopants in multilayer nanoparticles of NaGdF 4 :Yb/Tm@NaGdF 4 :Ce/Mn@NaYF 4 upon excitation at 980 and 254 nm, respectively. The dual-mode emission of the Mn 2+ dopants at 531 nm have a long-lived lifetime up to ∼30 ms as a result of the spin-forbidden optical transition of Mn 2+ within the 3d 5 configuration. After ceasing steady excitation at the two wavelengths, the long-lived feature of Mn 2+ luminescence allows a longer persistent time than lanthanide emissions, thereby enabling the ease of data decoding by a cell phone camera under a burst mode. The long-lived green upconversion emission also permits the generation of a long green tail emission upon dynamic excitation at 980 nm. These attributes make the as-prepared Mn 2+ -doped multilayer nanoparticles particularly attractive for multilevel anticounterfeiting.

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“…10,11 Due to their increase in sensitivity and reproducibility, probes based on this method have been extensively explored in recent years. [12][13][14][15] Dual-emission sensors can be achieved by the synergistic union of two or more luminescent materials. In this sense, coordination polymers, more specifically Lanthanide Metal-Organic Frameworks (Ln-MOFs), have proven to be an excellent host lattice for materials with enhanced properties, 16 due to their crystalline architectures depending on the arrangement of organic ligands and metal ions.…”

Section: Introductionmentioning

confidence: 99%

Plate-like CDots/EuBDC nanocomposite for ratiometric luminescence thermometry

et al. 2022

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Insight into temperature-dependent photoluminescence of LaOBr: Ce3+, Tb3+ phosphor as a ratiometric and colorimetric luminescent thermometer

Cited by 51 publications

References 34 publications

Yellow/Orange-Emitting ABZn₂Ga₂O₇:Bi³⁺(A = Ca, Sr; B = Ba, Sr) Phosphors: Optical Temperature Sensing and White Light-Emitting Diode Applications

Yellow/Orange-Emitting ABZn₂Ga₂O₇:Bi³⁺(A = Ca, Sr; B = Ba, Sr) Phosphors: Optical Temperature Sensing and White Light-Emitting Diode Applications

Dual-Mode Long-Lived Luminescence of Mn²⁺-Doped Nanoparticles for Multilevel Anticounterfeiting

Plate-like CDots/EuBDC nanocomposite for ratiometric luminescence thermometry

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Insight into temperature-dependent photoluminescence of LaOBr: Ce3+, Tb3+ phosphor as a ratiometric and colorimetric luminescent thermometer

Cited by 51 publications

References 34 publications

Yellow/Orange-Emitting ABZn2Ga2O7:Bi3+(A = Ca, Sr; B = Ba, Sr) Phosphors: Optical Temperature Sensing and White Light-Emitting Diode Applications

Yellow/Orange-Emitting ABZn2Ga2O7:Bi3+(A = Ca, Sr; B = Ba, Sr) Phosphors: Optical Temperature Sensing and White Light-Emitting Diode Applications

Dual-Mode Long-Lived Luminescence of Mn2+-Doped Nanoparticles for Multilevel Anticounterfeiting

Plate-like CDots/EuBDC nanocomposite for ratiometric luminescence thermometry

Contact Info

Product

Resources

About

Yellow/Orange-Emitting ABZn₂Ga₂O₇:Bi³⁺(A = Ca, Sr; B = Ba, Sr) Phosphors: Optical Temperature Sensing and White Light-Emitting Diode Applications

Yellow/Orange-Emitting ABZn₂Ga₂O₇:Bi³⁺(A = Ca, Sr; B = Ba, Sr) Phosphors: Optical Temperature Sensing and White Light-Emitting Diode Applications

Dual-Mode Long-Lived Luminescence of Mn²⁺-Doped Nanoparticles for Multilevel Anticounterfeiting