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Fluorescence Properties and Synthesis of Green-Emitting Tb3+-Activated Amorphous Calcium Silicate Phosphor by Ultraviolet Irradiation of 378 nm
Joint Authors
Kojima, Yoshiyuki
Kamei, Shinnosuke
Nishimiya, Nobuyuki
Numazawa, Masaaki
Source
International Journal of Optics
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-5, 5 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-02-08
Country of Publication
Egypt
No. of Pages
5
Main Subjects
Abstract EN
The excitation wavelength of conventional Tb3+-activated phosphor is near 270 nm.
This study describes novel green-emitting Tb3+-activated amorphous calcium silicate by ultraviolet excitation at 378 nm.
The Tb3+-activated amorphous calcium silicate was prepared by heating a sample of Tb3+-activated calcium silicate hydrate (CSH) at 900°C for 30 minutes.
The emission wavelength of the resulting phosphor was 544 nm.
The optimum excitation wavelength within the range 300–400 nm was 378 nm.
The Tb3+-activated amorphous calcium silicate emitted green by ultraviolet irradiation.
The optimum initial Tb/Ca atomic ratio of this phosphor was about 0.5.
A mechanism for the action of the phosphor is proposed, in which Tb3+ ions existing in the layer of the CSH lead to loss of water molecules and OH groups.
American Psychological Association (APA)
Kojima, Yoshiyuki& Numazawa, Masaaki& Kamei, Shinnosuke& Nishimiya, Nobuyuki. 2012. Fluorescence Properties and Synthesis of Green-Emitting Tb3+-Activated Amorphous Calcium Silicate Phosphor by Ultraviolet Irradiation of 378 nm. International Journal of Optics،Vol. 2012, no. 2012, pp.1-5.
https://search.emarefa.net/detail/BIM-479663
Modern Language Association (MLA)
Kojima, Yoshiyuki…[et al.]. Fluorescence Properties and Synthesis of Green-Emitting Tb3+-Activated Amorphous Calcium Silicate Phosphor by Ultraviolet Irradiation of 378 nm. International Journal of Optics No. 2012 (2012), pp.1-5.
https://search.emarefa.net/detail/BIM-479663
American Medical Association (AMA)
Kojima, Yoshiyuki& Numazawa, Masaaki& Kamei, Shinnosuke& Nishimiya, Nobuyuki. Fluorescence Properties and Synthesis of Green-Emitting Tb3+-Activated Amorphous Calcium Silicate Phosphor by Ultraviolet Irradiation of 378 nm. International Journal of Optics. 2012. Vol. 2012, no. 2012, pp.1-5.
https://search.emarefa.net/detail/BIM-479663
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-479663