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- Publisher Website: 10.1016/j.jlumin.2020.117360
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Article: The key roles of 4f-level splitting and vibronic coupling in the high-efficiency luminescence of Ce3+ ion in LuAG transparent ceramic phosphors
Title | The key roles of 4f-level splitting and vibronic coupling in the high-efficiency luminescence of Ce3+ ion in LuAG transparent ceramic phosphors |
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Authors | |
Keywords | Ce3+ ion-activated LuAG transparent ceramics Photoluminescence Quantum efficiency Vibronic coupling |
Issue Date | 2020 |
Publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jlumin |
Citation | Journal of Luminescence, 2020, v. 225, p. 117360:1-117360:5 How to Cite? |
Abstract | Ce3+ ion-activated lutetium aluminum garnet (LuAG:Ce) polycrystalline transparent ceramics (TCs) were prepared with high-temperature vacuum-sintering technology. The quantum efficiency of the characteristic Ce3+ 5d→4f luminescence of the prepared LuAG:Ce TC phosphor with 0.50at.% Ce sample was measured to be an almost unit. More interestingly, although the acquired low-temperature luminescence spectra still seemingly consist of double broad bands with considerable overlapping, the five major emission lines due to the multiple splittings of 4f shell of Ce3+ are at least unveiled on the basis of theoretical calculations with the semiclassical time-dependent approach of Heller. The pure electronic transition energy and electron-phonon coupling information of each individual emission line are thus determined. The study leads to some important understandings: (i) The 5d→4f transitions of Ce3+ ion are extremely efficient even in the complex polycrystalline environment; (ii) The radiative transitions are much complicated than the commonly understood picture; (iii) As the radiation energy increases, the vibronic coupling characterized by Huang-Rhys factor becomes weaker; Meanwhile, the contribution to the total luminescence tends to increase; (iv) The involved lattice vibration mode could be the low frequency mode of ∼260 cm−1. |
Persistent Identifier | http://hdl.handle.net/10722/285498 |
ISSN | 2023 Impact Factor: 3.3 2023 SCImago Journal Rankings: 0.589 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Tang, F | - |
dc.contributor.author | Su, Z | - |
dc.contributor.author | LAO, X | - |
dc.contributor.author | BAO, Y | - |
dc.contributor.author | Zhu, D | - |
dc.contributor.author | Xu, S | - |
dc.date.accessioned | 2020-08-18T03:53:59Z | - |
dc.date.available | 2020-08-18T03:53:59Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Journal of Luminescence, 2020, v. 225, p. 117360:1-117360:5 | - |
dc.identifier.issn | 0022-2313 | - |
dc.identifier.uri | http://hdl.handle.net/10722/285498 | - |
dc.description.abstract | Ce3+ ion-activated lutetium aluminum garnet (LuAG:Ce) polycrystalline transparent ceramics (TCs) were prepared with high-temperature vacuum-sintering technology. The quantum efficiency of the characteristic Ce3+ 5d→4f luminescence of the prepared LuAG:Ce TC phosphor with 0.50at.% Ce sample was measured to be an almost unit. More interestingly, although the acquired low-temperature luminescence spectra still seemingly consist of double broad bands with considerable overlapping, the five major emission lines due to the multiple splittings of 4f shell of Ce3+ are at least unveiled on the basis of theoretical calculations with the semiclassical time-dependent approach of Heller. The pure electronic transition energy and electron-phonon coupling information of each individual emission line are thus determined. The study leads to some important understandings: (i) The 5d→4f transitions of Ce3+ ion are extremely efficient even in the complex polycrystalline environment; (ii) The radiative transitions are much complicated than the commonly understood picture; (iii) As the radiation energy increases, the vibronic coupling characterized by Huang-Rhys factor becomes weaker; Meanwhile, the contribution to the total luminescence tends to increase; (iv) The involved lattice vibration mode could be the low frequency mode of ∼260 cm−1. | - |
dc.language | eng | - |
dc.publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jlumin | - |
dc.relation.ispartof | Journal of Luminescence | - |
dc.subject | Ce3+ ion-activated LuAG transparent ceramics | - |
dc.subject | Photoluminescence | - |
dc.subject | Quantum efficiency | - |
dc.subject | Vibronic coupling | - |
dc.title | The key roles of 4f-level splitting and vibronic coupling in the high-efficiency luminescence of Ce3+ ion in LuAG transparent ceramic phosphors | - |
dc.type | Article | - |
dc.identifier.email | Xu, S: sjxu@hku.hk | - |
dc.identifier.authority | Xu, S=rp00821 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.jlumin.2020.117360 | - |
dc.identifier.scopus | eid_2-s2.0-85084474546 | - |
dc.identifier.hkuros | 312906 | - |
dc.identifier.volume | 225 | - |
dc.identifier.spage | 117360:1 | - |
dc.identifier.epage | 117360:5 | - |
dc.identifier.isi | WOS:000541377400012 | - |
dc.publisher.place | Netherlands | - |
dc.identifier.issnl | 0022-2313 | - |