Broadband spectral conversion due to cooperative and phonon-assistant energy transfer from ZnO to Yb3+

Ye, Shujun; Tanabe, Setsuhisa; Jiang, Nan; Wang, D.

doi:10.1007/s00340-012-4971-3

Cited by 7 publications

(4 citation statements)

References 21 publications

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“…In recent years, many compounds have been investigated as hosts for sensitizing Yb 3+ ions, for example, MR 2 (MoO 4 ) 4 , 19 ZnO, 20 In this work, the structural and spectroscopic measurements were carried out to investigate the luminescence of Yb 3 + -doped Zn 2 V 2 O 7 particles. The compounds could broadly absorb UV or visible light through charge-transfer state (CTS) and efficiently transfer energy to activators (Yb 3+ ).…”

Section: Introductionmentioning

confidence: 99%

“…The compounds could broadly absorb UV or visible light through charge-transfer state (CTS) and efficiently transfer energy to activators (Yb 3+ ). In recent years, many compounds have been investigated as hosts for sensitizing Yb 3+ ions, for example, MR 2 (MoO 4 ) 4 , 19 ZnO, 20 In this work, the structural and spectroscopic measurements were carried out to investigate the luminescence of Yb 3 + -doped Zn 2 V 2 O 7 particles. The structure, luminescence and excitation spectra, and the absolute PL quantum efficiency (QE) were investigated.…”

Section: Introductionmentioning

confidence: 99%

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Spectral Conversion From Ultraviolet to Near Infrared in Yb³⁺‐Doped Pyrovanadate Zn₂V₂O₇ Particles

et al. 2014

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Yb3+‐doped Zn2V2O7 particles were synthesized via the Pechini method. The crystal structure and morphology of the polycrystalline samples were investigated by X‐ray powder diffraction and scanning electron microscopy measurements, respectively. The reflectance spectrum, photoluminescence excitation, emission spectra, and the absolute quantum efficiency of the IR emission (900–1100) were measured. The intense near‐IR emission around 1000 nm attributed to the 2F5/2 → 2F7/2 transition of Yb3+ was observed under the excitation of ultraviolet light in the Yb3+‐doped pyrovanadate. The efficient energy transfer from VO4 groups into Yb3+ ions was confirmed by the optical spectra and fluorescent lifetime measurements. These results demonstrate that the Yb3+‐doped pyrovanadate particles are promising materials for spectral conversion from visible sunlight to near‐infrared emission and it may have potential application for spectral convertor to enhance the photoelectric conversion efficiency of c‐Si solar cells.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Spectral Conversion From Ultraviolet to Near Infrared in Yb³⁺‐Doped Pyrovanadate Zn₂V₂O₇ Particles

et al. 2014

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“…compounds could broadly absorb UV or visible light through charge transfer state (CTS) and efficiently transfer energy to activators. In recent years, these compounds are widely investigated as hosts for sensitizing Yb 3+ ion, for example, oxide [21,22], tungstates and molybdates [23,24], niobate [25], aluminates [26], vanadates [27], and some glasses matrix [28]. Of various host materials for Yb 3+ guest ions, compounds VO − exhibit excellent chemical stability and optical quality and the VO 4 tetrahedron can efficiently absorb UV light by CTS.…”

Section: Introductionmentioning

confidence: 99%

Conversion and quantum efficiency from ultraviolet light to near infrared emission in Yb 3+ -doped pyrovanadates M ZnV 2 O 7 ( M = Ca, Sr, Ba)

Guan¹,

Huang²,

Tsuboi³

et al. 2014

Materials Science and Engineering: B

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“…Because of their applications in light conversion, such as for solar cells and light emitting devices, light converters based on these materials have attracted increasing interest in recent years. [1][2][3][4][5] The small solid solubility of rare earth ions in semiconductors means that it is more feasible to synthesize multiphase composites than singlephase rare-earth doped semiconductor materials. Such multiphase materials, including core-shell structures and quantum dot doped glass structures, have been widely and deeply studied.…”

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confidence: 99%

Core–shell-like Y₂O₃:[(Tb³⁺–Yb³⁺), Li⁺]/CdZnS heterostructure synthesized by super-close-space sublimation for broadband down-conversion

Zhang

Meng

et al. 2014

Nanoscale

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Combination with semiconductors is a promising approach to the realization of broadband excitation of light conversion materials based on rare earth compounds, to boost the energy efficiency of silicon solar cells. Cd(1-x)Zn(x)S is a wide bandgap semiconductor with large exciton binding energy. By changing its composition, the bandgap of Cd(1-x)Zn(x)S can be tuned to match the absorption of trivalent lanthanide (Ln) ions, which makes it a competent energy donor for the Ln(3+)-Yb(3+) couple. In this work, we designed a clean route to a broadband down-converter based on a core-shell-like Y2O3:[(Tb(3+)-Yb(3+)), Li(+)]/Cd0.81Zn0.19S (CdZnS) heterostructure. By hot-pressing and subsequent annealing of a Y2O3:[(Tb(3+)-Yb(3+)), Li(+)]/CdZnS mixture, highly pure CdZnS was sublimated and deposited on the Y2O3:[(Tb(3+)-Yb(3+)), Li(+)] grains while maintaining the original composition of the precursor. The CdZnS shell acted as a light absorber and energy donor for the Tb(3+)-Yb(3+) quantum cutting couple. Because the use of solvents was avoided during the formation of the heterostructures, few impurities were incorporated into the samples, and the non-radiative transition was therefore markedly suppressed. The Y2O3:[(Tb(3+)-Yb(3+)), Li(+)]/CdZnS heterostructures possess strong near-infrared (NIR) luminescence from Yb(3+). Broadband down-conversion to the Yb(3+) NIR emission was obtained in a wide range of 250-650 nm.

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Broadband spectral conversion due to cooperative and phonon-assistant energy transfer from ZnO to Yb3+

Cited by 7 publications

References 21 publications

Spectral Conversion From Ultraviolet to Near Infrared in Yb³⁺‐Doped Pyrovanadate Zn₂V₂O₇ Particles

Spectral Conversion From Ultraviolet to Near Infrared in Yb³⁺‐Doped Pyrovanadate Zn₂V₂O₇ Particles

Conversion and quantum efficiency from ultraviolet light to near infrared emission in Yb 3+ -doped pyrovanadates M ZnV 2 O 7 ( M = Ca, Sr, Ba)

Core–shell-like Y₂O₃:[(Tb³⁺–Yb³⁺), Li⁺]/CdZnS heterostructure synthesized by super-close-space sublimation for broadband down-conversion

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Broadband spectral conversion due to cooperative and phonon-assistant energy transfer from ZnO to Yb3+

Cited by 7 publications

References 21 publications

Spectral Conversion From Ultraviolet to Near Infrared in Yb3+‐Doped Pyrovanadate Zn2V2O7 Particles

Spectral Conversion From Ultraviolet to Near Infrared in Yb3+‐Doped Pyrovanadate Zn2V2O7 Particles

Conversion and quantum efficiency from ultraviolet light to near infrared emission in Yb 3+ -doped pyrovanadates M ZnV 2 O 7 ( M = Ca, Sr, Ba)

Core–shell-like Y2O3:[(Tb3+–Yb3+), Li+]/CdZnS heterostructure synthesized by super-close-space sublimation for broadband down-conversion

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Spectral Conversion From Ultraviolet to Near Infrared in Yb³⁺‐Doped Pyrovanadate Zn₂V₂O₇ Particles

Spectral Conversion From Ultraviolet to Near Infrared in Yb³⁺‐Doped Pyrovanadate Zn₂V₂O₇ Particles

Core–shell-like Y₂O₃:[(Tb³⁺–Yb³⁺), Li⁺]/CdZnS heterostructure synthesized by super-close-space sublimation for broadband down-conversion