Up-conversion luminescence enhancement and tunable emission color of Y2O3: Tm/Yb@Y2O3: Yb@Y2O3: Er/Yb multilayer thin films

Han, Qi; Yan, Tianpeng; Ye, Song; Wang, Yuxiao; Zhang, Xueru

doi:10.1016/j.jallcom.2021.160151

Cited by 13 publications

(2 citation statements)

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“…The successful production of brilliant blue LEDs based on GaN crystals by Shuji Nakamura ushered in an era of full-color LED displays and lighting, − including the achievement of white light emission, which has important scientific and technological roles. However, the development of materials for white light emission is a continuous process, and understanding and optimizing the conditions for the production of white light is of high technological importance. − In recent years, the field of achieving efficient and stable white light emission has been intensively studied, especially using commercial 980 nm near-infrared laser excitation. Naresh et al used CsPb(Br 1– x /I x ) 3 perovskite nanocrystals and NaYF 4 :Yb,Tm@NaYF 4 upconversion nanoparticles to form a nanocomposite and designed an upconversion white light-emitting device .…”

Section: Introductionmentioning

confidence: 99%

Ultraviolet and White Light Emissions from Multiphoton Upconversion Transitions in Yb/Tm/Ho Codoped Cubic Zirconia Single Crystals Excited by NIR

Wu,

Wang,

et al. 2024

ACS Photonics

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Under excitation at 980 nm, Tm 3+ may emit ultraviolet, blue, and red light, and Ho 3+ may emit green light through multiphoton upconversion processes in Yb/Tm/Ho codoped materials. However, because the probability of the electron population of the higher excited state energy levels is much lower than that of the lower ones in multiphoton upconversion processes, it is difficult to observe the ultraviolet emission of Tm 3+ -doped single crystals under excitation at 980 nm. Here, we report that high-quality single crystals of cubic ZrO 2 codoped with Tm 2 O 3 , Ho 2 O 3 , and Yb 2 O 3 are successfully grown by the optical floating zone method, and ultraviolet emission at 308 nm was observed for the first time from multiphoton upconversion transitions in these highly transparent, low phonon energy single crystals under excitation at 980 nm. This result demonstrates the prospect of making ultraviolet solid-state lasers pumped by nearinfrared light. Moreover, bright white light was emitted from the single crystal prepared with 5.00 mol % Yb 2 O 3 , 0.75 mol % Tm 2 O 3 , 0.0075 mol % Ho 2 O 3 , 2.2425 mol % Y 2 O 3 , and 92.00 mol % ZrO 2 under excitation at 980 nm, and a bright solid white light source excited by a near-infrared light-emitting diode for practical use is presented.

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Section: Introductionmentioning

confidence: 99%

Ultraviolet and White Light Emissions from Multiphoton Upconversion Transitions in Yb/Tm/Ho Codoped Cubic Zirconia Single Crystals Excited by NIR

Wu,

Wang,

et al. 2024

ACS Photonics

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“…11 Rare earth doped materials are very useful nowadays, because the characteristics that provide the lanthanides to the material can confer new applications as optoelectronics devices, fiber amplifiers, solid state laser, 12 solar cells, 13 and luminescence. 14 Studies of the photoluminescence of the europium metalorganic frameworks have increased over the last decade, due to their high luminescence that make these systems a promising for areas of potential application such as optical markers, optical sensors, and fluorometric tests and other clinical applications. 15 These complexes can be seen as molecular light-conversion devices that exploit the antenna effect; proposed by Crosby et al 16 in 1962 and that has been confirmed by various authors, such as Ronghu Wu and Su 17 in 2001, 18–21 stablish that the luminescent metalorganic frameworks are efficient in their absorption sequences and their energy and emission transfer to the rare earth, which involve a reduction of the organic compound emission and a increasing of the rare earth emission.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the morphology and chelating agent excess in the design of luminescent metalorganic framework of europium thenoyltrifluoroacetone

Medina-Velazquez

Osorio

Calderón

et al. 2022

Advances in Mechanical Engineering

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Metal-organic frameworks (MOFs) have been synthesized using several elements, including the rare-earth. Research on luminescent diketones as an efficient alternative for the generation of OLEDs has increased in recent years, however, the evaluation of parameters such as morphology or excess of the cheating agent is not completely studied. In this work, the synthesis of thenoyltrifluoroacetone (TTA) combined with europium at the different chelating agent and rare earth ratio is presented, founding a change in morphology directed related with optical performance, structural analysis was performed using x-ray diffraction (XRD), and was observed a monoclinic structure in Eu 15% and Eu 20% samples. Morphological analysis was done with scanning electron microscopy (SEM). The TTA5Eu sample presented an irregular morphology with nanometric particles embedded, the TTA15Eu had a morphology of agglomerated particles, and TTA20Eu sample the morphology changes radically to an angular morphology. Nanowires were present in the sample of 25% Eu3+. The chemical properties were determined using Fourier transform infrared spectroscopy (FTIR), and the optical properties were measured by photoluminescence (FL). The results showed vibration bands and stretching of the thiophene group, without apparent change due to the chelation of the Eu3+.

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High color purity green up-conversion emission of Ho3+-doped BaGd2O4 phosphors sensitized by Yb3+ or Nd3+/Yb3+

Liu,

Li,

et al. 2024

Advanced Powder Technology

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Up-conversion luminescence enhancement and tunable emission color of Y2O3: Tm/Yb@Y2O3: Yb@Y2O3: Er/Yb multilayer thin films

Cited by 13 publications

References 40 publications

Ultraviolet and White Light Emissions from Multiphoton Upconversion Transitions in Yb/Tm/Ho Codoped Cubic Zirconia Single Crystals Excited by NIR

Ultraviolet and White Light Emissions from Multiphoton Upconversion Transitions in Yb/Tm/Ho Codoped Cubic Zirconia Single Crystals Excited by NIR

Evaluation of the morphology and chelating agent excess in the design of luminescent metalorganic framework of europium thenoyltrifluoroacetone

High color purity green up-conversion emission of Ho3+-doped BaGd2O4 phosphors sensitized by Yb3+ or Nd3+/Yb3+

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