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Content Provider | IEEE Xplore Digital Library |
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Author | Snag-Sik Kang Ji-Koon Park Gi-Won Chang Byung-Youl Cha Jung-Wook Shin Sang-Hee Nam Chi-Woong Mun |
Copyright Year | 2004 |
Description | Author affiliation: Med. Imaging Res. Center, Inje Univ., Kyungnahm, South Korea (Snag-Sik Kang) |
Abstract | In this work, fine Gd/sub 2/O/sub 3/:Eu powder was synthesized using a solution-combustion method for high-resolution digital X-ray imaging detectors. The structure of the phosphors was characterized by X-ray diffraction (XRD), high-resolution scanning electron microscopy (HR-SEM). It was possible to obtain fine Gd/sub 2/O/sub 3/:Eu crystallized particles with an average particle size of only 20 nm. The optical properties investigated were photoluminescence emission and excitation spectra, luminescence decay time, and X-ray conversion efficiency. The emission corresponding to the /sup 5/D/sub 0//spl rarr//sup 7/F/sub 2/ transition at 610 nm was dominant, and the Eu/sup 3+/ ions substituted well for the Gd/sup 3+/ sites. Quenching starts at an europium concentration of 8% wt, and the strongest X-ray conversion efficiency was achieved at the phosphor with 5% wt. The mean lifetime of synthesized phosphors is 2.3-2.6 ms. |
Starting Page | 4510 |
Ending Page | 4514 |
File Size | 1394495 |
Page Count | 5 |
File Format | |
ISBN | 0780387007 |
ISSN | 10823654 |
e-ISBN | 0780387015 |
DOI | 10.1109/NSSMIC.2004.1466885 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2004-10-16 |
Publisher Place | Italy |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Luminescence Phosphors Image resolution X-ray imaging Powders X-ray detection X-ray detectors X-ray diffraction Optical diffraction X-ray scattering |
Content Type | Text |
Resource Type | Article |
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