local analysis of eu2+ emission in caalsin3
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ID: 149384
2013
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Abstract
We have investigated the local luminescence properties of Eu-doped CaAlSiN3 by using low-energy electron beam (e-beam) techniques. The particles yield broad emission centered at 655 nm with a shoulder at higher wavelength under light excitation, and a broad band around 643 nm with a tail at 540 nm under e-beam excitation. Using cathodoluminescence (CL) in a scanning electron microscope (SEM), we have observed small and large particles, which, although with different compositions, exhibit Eu2+-related emissions at 645 and 635 nm, respectively. Local CL measurements reveal that the Eu2+ emission may actually consist of several bands. In addition to the red broad band, regularly spaced sharp peaks have been occasionally observed. These luminescence variations may originate from a variation in the composition inside CaAlSiN3.
| Reference Key |
hirosaki2013sciencelocal
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| Authors | ;Benjamin Dierre, Takashi Takeda, Takashi Sekiguchi, Takayuki Suehiro, Kohsei Takahashi, Yoshinobu Yamamoto, Rong-Jun Xie and Naoto Hirosaki |
| Journal | ieee control systems letters |
| Year | 2013 |
| DOI |
10.1088/1468-6996/14/6/064201
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