Blue PL and EL emissions from Bi-activated binary oxide thin-film phosphors

Fukada, Haruki; Ueda, Kouhei; Ishino, Jun-ichi; Miyata, Toshihiro; Minami, Tadatsugu

doi:10.1016/j.tsf.2009.08.014

Cited by 29 publications

(4 citation statements)

References 6 publications

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“…The difference is attributed towards a change in the crystal structure. The changes in the PL emission from Bi 3 þ due to changes in the structure have also been reported by other authors such as Fukada et al [32]. They have compared the emission from different Bi-activated binary oxide phosphor thin films.…”

Section: Photoluminescence (Pl) Studysupporting

confidence: 72%

Comparison of Y2O3:Bi3+ phosphor thin films fabricated by the spin coating and radio frequency magnetron techniques

Jafer

Yousif

Kumar

et al. 2016

Physica B: Condensed Matter

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Section: Photoluminescence (Pl) Studysupporting

confidence: 72%

Comparison of Y2O3:Bi3+ phosphor thin films fabricated by the spin coating and radio frequency magnetron techniques

Jafer

Yousif

Kumar

et al. 2016

Physica B: Condensed Matter

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“…It is known that there are two kinds of symmetry sites for the luminescent center Bi 3+ ions in Y 2 O 3 crystal lattice, one with S 6 symmetry, the other with C 2 symmetry 13,19,20 Figure 2. displays the PLE and PL spectra of Bi 3+ singly doped (Y 0.99 Bi 0.01 ) 2 O 3 .…”

Section: Resultsmentioning

confidence: 99%

Broadband Downconversion of Ultraviolet Light to Near‐Infrared Emission in Bi³⁺–Yb³⁺‐Codoped Y₂O₃ Phosphors

Huang

Zhang

2010

Journal of the American Ceramic Society

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The metal ion Bi 31 has been shown to be an efficient broadband sensitizer for Yb 31 ion in the Y 2 O 3 host lattice. Upon ultravioletlight excitation in the allowed 1 S 0 -3 P 1 transition of Bi 31 ions, the characteristic near infrared luminescence of Yb 31 ions due to the 2 F 5/2 -2 F 7/2 transition was observed as a result of energy transfer from Bi 31 to Yb 31 ions. It demonstrates that cooperative downconversion can be realized for Bi 31 -Yb 31 coupling. Yb 31 -concentration-dependent quantum efficiency was evaluated and the maximum efficiency reached 173.8%. These phosphors are promising for the enhancement of energy efficiency of crystalline Si solar cells via spectrum shifting. PW1830 (Philips, Almelo, The Netherlands) diffractometer using CoKa (1.78010 Å ) radiation. The photoluminescence (PL) and J. Ballato-contributing editor

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“…The luminescence properties of bismuth(III) ion in Y 2 O 3 have been the focus of theoretical , and experimental − studies, allowing to confirm the predictions of Boulon on the energetic levels of the ion in two specific sites of the host labeled as C 2 and S 6 . So, now it is well established that the Bi 3+ ion optical properties in the UV–vis are determined by the transitions involving the 1 S 0 ground state and the 3 P 1 excited one.…”

Section: Resultsmentioning

confidence: 94%

Energy Transfer in Bi- and Er-Codoped Y₂O₃ Nanocrystals: An Effective System for Rare Earth Fluorescence Enhancement

et al. 2014

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The enhancement of the low absorption cross section and widening of the absorption range of the RE ions in the UV-blue region is still a challenge to develop optical systems with high performance. In this work we synthesized Bi- and Er-codoped Y2O3 nanocrystals by means of Pechini type sol-gel process. X-ray powder diffraction (XRPD) and transmission electron microscopy (TEM) were performed to evaluate the nanocrystalline particle size and phase. Photoluminescence investigation in the UV–vis and IR regions showed that the presence of Bi3+ ions promotes the strengthening of Er3+ emitter properties. In particular, an Er3+ sensitization process based on a broadband energy transfer mediated by the Bi3+ ions in the C2 site was evaluated, resulting in a wavelength spread for the photostimulation of the rare earth emissions in the visible and NIR range. We pointed out a resonant type via a dipole-dipole interaction as the most probable mechanism of energy transfer. Moreover, the critical distance between the Bi3+ and Er3+ ions was estimated to be of about 8.5 Å

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Blue PL and EL emissions from Bi-activated binary oxide thin-film phosphors

Cited by 29 publications

References 6 publications

Comparison of Y2O3:Bi3+ phosphor thin films fabricated by the spin coating and radio frequency magnetron techniques

Comparison of Y2O3:Bi3+ phosphor thin films fabricated by the spin coating and radio frequency magnetron techniques

Broadband Downconversion of Ultraviolet Light to Near‐Infrared Emission in Bi³⁺–Yb³⁺‐Codoped Y₂O₃ Phosphors

Energy Transfer in Bi- and Er-Codoped Y₂O₃ Nanocrystals: An Effective System for Rare Earth Fluorescence Enhancement

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Blue PL and EL emissions from Bi-activated binary oxide thin-film phosphors

Cited by 29 publications

References 6 publications

Comparison of Y2O3:Bi3+ phosphor thin films fabricated by the spin coating and radio frequency magnetron techniques

Comparison of Y2O3:Bi3+ phosphor thin films fabricated by the spin coating and radio frequency magnetron techniques

Broadband Downconversion of Ultraviolet Light to Near‐Infrared Emission in Bi3+–Yb3+‐Codoped Y2O3 Phosphors

Energy Transfer in Bi- and Er-Codoped Y2O3 Nanocrystals: An Effective System for Rare Earth Fluorescence Enhancement

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About

Broadband Downconversion of Ultraviolet Light to Near‐Infrared Emission in Bi³⁺–Yb³⁺‐Codoped Y₂O₃ Phosphors

Energy Transfer in Bi- and Er-Codoped Y₂O₃ Nanocrystals: An Effective System for Rare Earth Fluorescence Enhancement