Dy3+-doped germanate glasses for waveguide-typed irradiation light sources

H. Y. Li; L. F. Shen; E. Y.B. Pun; H. Lin

doi:10.1016/j.jallcom.2015.06.053

Dy³⁺-doped germanate glasses for waveguide-typed irradiation light sources

H. Y. Li
, L. F. Shen
, E. Y.B. Pun
, H. Lin^*

^*Corresponding author for this work

Dalian Polytechnic University
City University of Hong Kong

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

Intense orange-yellow luminescence was achieved in trivalent dysprosium ion (Dy³⁺) doped waveguide-adaptive sodium magnesium aluminium germanate (NMAG) glasses under ultraviolet (UV) radiation. The dominant 482.5 nm (blue) and 574.5 nm (yellow) peaks correspond to ⁴F_9/2 → ⁶H_15/2 and ⁴F_9/2 → ⁶H_13/2 transitions, respectively. The internal quantum efficiency for the ⁴F_9/2 level of Dy³⁺ and the total external quantum yield for the four visible emissions were calculated to be 70.88% and 8.90%, respectively. Slab and channel waveguides were attempted by K⁺-Na⁺ ion-exchange processes and the effective diffusion coefficient D_e was derived to be 0.085 μm²/min, indicating that thermal ion exchange was feasible to fabricate Dy³⁺-doped NMAG glasses waveguide. The efficient visible emissions in Dy³⁺-doped NMAG glasses demonstrate the potential in developing waveguide-typed irradiation light sources for minimally invasive photodynamic therapy.

Original language	English
Pages (from-to)	586-591
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	646
DOIs	https://doi.org/10.1016/j.jallcom.2015.06.053
State	Published - 1 Jul 2015
Externally published	Yes

Keywords

Dy-doped germanate glasses
Quantum efficiency and yield
Waveguide-typed irradiation light source

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10.1016/j.jallcom.2015.06.053

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@article{d4d9a10779b74f22a9aaba74750347e6,

title = "Dy3+-doped germanate glasses for waveguide-typed irradiation light sources",

abstract = "Intense orange-yellow luminescence was achieved in trivalent dysprosium ion (Dy3+) doped waveguide-adaptive sodium magnesium aluminium germanate (NMAG) glasses under ultraviolet (UV) radiation. The dominant 482.5 nm (blue) and 574.5 nm (yellow) peaks correspond to 4F9/2 → 6H15/2 and 4F9/2 → 6H13/2 transitions, respectively. The internal quantum efficiency for the 4F9/2 level of Dy3+ and the total external quantum yield for the four visible emissions were calculated to be 70.88\% and 8.90\%, respectively. Slab and channel waveguides were attempted by K+-Na+ ion-exchange processes and the effective diffusion coefficient De was derived to be 0.085 μm2/min, indicating that thermal ion exchange was feasible to fabricate Dy3+-doped NMAG glasses waveguide. The efficient visible emissions in Dy3+-doped NMAG glasses demonstrate the potential in developing waveguide-typed irradiation light sources for minimally invasive photodynamic therapy.",

keywords = "Dy-doped germanate glasses, Quantum efficiency and yield, Waveguide-typed irradiation light source",

author = "Li, \{H. Y.\} and Shen, \{L. F.\} and Pun, \{E. Y.B.\} and H. Lin",

year = "2015",

month = jul,

day = "1",

doi = "10.1016/j.jallcom.2015.06.053",

language = "英语",

volume = "646",

pages = "586--591",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Dy3+-doped germanate glasses for waveguide-typed irradiation light sources

AU - Li, H. Y.

AU - Shen, L. F.

AU - Pun, E. Y.B.

AU - Lin, H.

PY - 2015/7/1

Y1 - 2015/7/1

N2 - Intense orange-yellow luminescence was achieved in trivalent dysprosium ion (Dy3+) doped waveguide-adaptive sodium magnesium aluminium germanate (NMAG) glasses under ultraviolet (UV) radiation. The dominant 482.5 nm (blue) and 574.5 nm (yellow) peaks correspond to 4F9/2 → 6H15/2 and 4F9/2 → 6H13/2 transitions, respectively. The internal quantum efficiency for the 4F9/2 level of Dy3+ and the total external quantum yield for the four visible emissions were calculated to be 70.88% and 8.90%, respectively. Slab and channel waveguides were attempted by K+-Na+ ion-exchange processes and the effective diffusion coefficient De was derived to be 0.085 μm2/min, indicating that thermal ion exchange was feasible to fabricate Dy3+-doped NMAG glasses waveguide. The efficient visible emissions in Dy3+-doped NMAG glasses demonstrate the potential in developing waveguide-typed irradiation light sources for minimally invasive photodynamic therapy.

AB - Intense orange-yellow luminescence was achieved in trivalent dysprosium ion (Dy3+) doped waveguide-adaptive sodium magnesium aluminium germanate (NMAG) glasses under ultraviolet (UV) radiation. The dominant 482.5 nm (blue) and 574.5 nm (yellow) peaks correspond to 4F9/2 → 6H15/2 and 4F9/2 → 6H13/2 transitions, respectively. The internal quantum efficiency for the 4F9/2 level of Dy3+ and the total external quantum yield for the four visible emissions were calculated to be 70.88% and 8.90%, respectively. Slab and channel waveguides were attempted by K+-Na+ ion-exchange processes and the effective diffusion coefficient De was derived to be 0.085 μm2/min, indicating that thermal ion exchange was feasible to fabricate Dy3+-doped NMAG glasses waveguide. The efficient visible emissions in Dy3+-doped NMAG glasses demonstrate the potential in developing waveguide-typed irradiation light sources for minimally invasive photodynamic therapy.

KW - Dy-doped germanate glasses

KW - Quantum efficiency and yield

KW - Waveguide-typed irradiation light source

UR - https://www.scopus.com/pages/publications/84933499842

U2 - 10.1016/j.jallcom.2015.06.053

DO - 10.1016/j.jallcom.2015.06.053

M3 - 文章

AN - SCOPUS:84933499842

SN - 0925-8388

VL - 646

SP - 586

EP - 591

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Dy³⁺-doped germanate glasses for waveguide-typed irradiation light sources

Abstract

Keywords

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