Ho3+ doped Na5Y9F32 single crystals doubly sensitized by Er3+ and Yb3+ for efficient 2.0 μm emission

Ding, Benli; Xiong, Zuhong; Zhang, Jianli; Xia, Haiping; Song, Hongwei; Chen, Baojiu

doi:10.1016/j.jlumin.2020.117254

Cited by 12 publications

(5 citation statements)

References 34 publications

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“…The green emission process can be indexed in two ways. First, 2 F 7/2 (Yb) + 980 nm laser → 2 F 5/2 (Yb)(GSA), 2 As can be seen in Figure 8b, the emission intensifications of green and red are different, which indicates that the distribution of excited ions in energy levels changes. According to the energy level transition mechanism, generally, there are two factors that cause the change of excited ion distribution, phonon energy and the distance between rare earth ions.…”

Section: The Mechanisms Of Energy Transfer and Emissionsmentioning

confidence: 99%

“…In recent years, rare earth (RE) ion-doped upconversion (UC) luminescent materials, which can gather energy via the process of absorbing two or more long-wavelength low-energy photons and then emitting a short-wavelength high-energy photon, have attracted much more attention [1][2][3]. Because of this property, RE-doped luminescent materials are widely used in many areas, such as display [4], solar cells [5], biological fluorescence imaging [6], phosphors [7], UC lasers [8], and optical communications [9].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Rb+ Doping on Tunable Luminescence in Yb3+/Er3+–Y2O3 Film

Song

et al. 2020

Coatings

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In this paper, a series of Rb+-doped Er3+/Yb3+–Y2O3 films were synthesized via a sol-gel method and spin coating. The structure and morphology of the samples were investigated by X-ray diffraction and scanning electron microscopy. The Rb+-doped films with nanoparticles, in the size range of 20–40 nm, were obtained. The spectroscopic analysis of the samples was investigated by using the emission spectra and the intensity of luminescence. All the samples exhibited a green emission ascribed to 2H11/2/4S3/2 to 4I15/2 of Er3+ and a red one ascribed to 4F9/2 and its stark level to 4I15/2 of Er3+. As the Rb+ concentration increased, the intensities of the green light and red light were enhanced 16.97- and 5.81-fold relative to that of the undoped sample. Moreover, by controlling the Rb+ concentration, the samples were capable of generating color-tunable luminescence from red to green linearly. The tunable emission was caused by the change of ion distribution ratio in 4F7/2(Er) and 4F9/2(Er) levels. The results suggest that the as-prepared Rb+-doped Er3+/Yb3+–Y2O3 films have a great potential for applications of luminescence.

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Section: The Mechanisms Of Energy Transfer and Emissionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Rb+ Doping on Tunable Luminescence in Yb3+/Er3+–Y2O3 Film

Song

et al. 2020

Coatings

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“…Unfortunately, direct excitation of Ho 3+ ions by commercially available high-power InGaAs laser diode (980 nm) is inefficient due to the absence of a suitable absorption band. However, this problem can be solved by using suitable sensitizers: Er 3+ , Tm 3+ and/or Yb 3+ [8][9][10]. Compared with Er 3+ and Tm 3+ , Yb 3+ is more feasible considering broad absorption band, large absorption cross section at 980 nm and presence of only one excited level 2 F5/2 [11].…”

Section: Introductionmentioning

confidence: 99%

Near-infrared emission in Ho3+-doped Yb3Ga5O12 garnet nanocrystals

Netolický

Beneš

Melánová

et al. 2022

Journal of Luminescence

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“…Recently, rare earth ion doped Na 5 Lu 9 F 32 and Na 5 Y 9 F 32 single crystals were developed for upconversion and infrared laser. [6,7] The successful growth and application in the optical field of fluoride single crystals have inspired researchers to explore other new types of fluoride single crystals.…”

Section: Introductionmentioning

confidence: 99%

Growth of KAlF₄ and Na₅Al₃F₁₄ Aluminum Fluoride Single Crystals by Bridgman Method

Wang

Fang

et al. 2022

Crystal Research and Technology

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Highly transparent KAlF4 and Na5Al3F14 fluoride bulk single crystals in size of ≈Ф 50 mm × 10 mm are successfully grown for the first time by a modified Bridgman method. The physicochemical properties of the single crystals are investigated with the help of X‐ray diffraction (XRD), thermogravimetric and differential thermal analysis (TG‐DTA), absorption spectrum, Fourier infrared spectroscopy, and Raman spectrum measurements. The KAlF4 and Na5Al3F14 phases of the obtained single crystals are determined from the results of XRD. The melting points of KAlF4 and Na5Al3F14 are measured to be ≈549 and ≈705 ℃ from their DTA curves. The maximum matrix phonon energies of KAlF4 and Na5Al3F14 single crystals are 544 and 530 cm–1 from their Raman spectra. The KAlF4 single crystal shows high transmittance from 2000 to 5500 nm, while Na5Al3F14 from 950 to 6000 nm. The energy gaps of KAlF4 and Na5Al3F14 are calculated to be 5.34 and 5.94 eV based on transmission spectra, respectively.

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Ho3+ doped Na5Y9F32 single crystals doubly sensitized by Er3+ and Yb3+ for efficient 2.0 μm emission

Cited by 12 publications

References 34 publications

Effect of Rb+ Doping on Tunable Luminescence in Yb3+/Er3+–Y2O3 Film

Effect of Rb+ Doping on Tunable Luminescence in Yb3+/Er3+–Y2O3 Film

Near-infrared emission in Ho3+-doped Yb3Ga5O12 garnet nanocrystals

Growth of KAlF₄ and Na₅Al₃F₁₄ Aluminum Fluoride Single Crystals by Bridgman Method

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Ho3+ doped Na5Y9F32 single crystals doubly sensitized by Er3+ and Yb3+ for efficient 2.0 μm emission

Cited by 12 publications

References 34 publications

Effect of Rb+ Doping on Tunable Luminescence in Yb3+/Er3+–Y2O3 Film

Effect of Rb+ Doping on Tunable Luminescence in Yb3+/Er3+–Y2O3 Film

Near-infrared emission in Ho3+-doped Yb3Ga5O12 garnet nanocrystals

Growth of KAlF4 and Na5Al3F14 Aluminum Fluoride Single Crystals by Bridgman Method

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Growth of KAlF₄ and Na₅Al₃F₁₄ Aluminum Fluoride Single Crystals by Bridgman Method