Abstract
We have synthesized Mn<sup>4+</sup>-doped mixed tetragermanate phases in the Li<inf>2</inf>Ge<inf>4</inf>O<inf>9</inf>LiNaGe<inf>4</inf>O<inf>9</inf> system, i.e., Li(Li,Na)Ge<inf>4</inf>O<inf>9</inf>, by a glass-ceramic technique using stoichiometric precursor glasses, and have examined the effect of substitution of Na on their photoluminescence properties. The tetragermanate phases indicated clear red emission based on a <sup>2</sup>E→<sup>4</sup>A<inf>2</inf> transition, and the entire substitution resulting in an LiNaGe<inf>4</inf>O<inf>9</inf> phase provided an improvement of quenching temperature for the emission. Furthermore, the LiNaGe<inf>4</inf>O<inf>9</inf> phase synthesized by solid-state reaction showed a high internal quantum yield and red color purity, demonstrating it to be a possible candidate as a rare-earth-free red phosphor.
| Original language | English |
|---|---|
| Pages (from-to) | 888-891 |
| Number of pages | 4 |
| Journal | Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan |
| Volume | 123 |
| Issue number | 1441 |
| DOIs | |
| Publication status | Published - 2015 |
| Externally published | Yes |
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Keywords
- Germanate
- Manganese ion
- Phosphor
- Rare-earth free
- Red emission
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry
- Chemistry(all)
- Condensed Matter Physics
Cite this
Mn-doped LiNaGe<inf>4</inf>O<inf>9</inf> as a rare-earth free phosphor : Impact of Na-substitution on emission in tetragermanate phase. / Suzuki, Rie; Kunitomo, Jun; Takahashi, Yoshihiro; Nakamura, Kensaku; Osada, Minoru; Terakado, Nobuaki; Fujiwara, Takumi.
In: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, Vol. 123, No. 1441, 2015, p. 888-891.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Mn-doped LiNaGe4O9 as a rare-earth free phosphor
T2 - Impact of Na-substitution on emission in tetragermanate phase
AU - Suzuki, Rie
AU - Kunitomo, Jun
AU - Takahashi, Yoshihiro
AU - Nakamura, Kensaku
AU - Osada, Minoru
AU - Terakado, Nobuaki
AU - Fujiwara, Takumi
PY - 2015
Y1 - 2015
N2 - We have synthesized Mn4+-doped mixed tetragermanate phases in the Li2Ge4O9LiNaGe4O9 system, i.e., Li(Li,Na)Ge4O9, by a glass-ceramic technique using stoichiometric precursor glasses, and have examined the effect of substitution of Na on their photoluminescence properties. The tetragermanate phases indicated clear red emission based on a 2E→4A2 transition, and the entire substitution resulting in an LiNaGe4O9 phase provided an improvement of quenching temperature for the emission. Furthermore, the LiNaGe4O9 phase synthesized by solid-state reaction showed a high internal quantum yield and red color purity, demonstrating it to be a possible candidate as a rare-earth-free red phosphor.
AB - We have synthesized Mn4+-doped mixed tetragermanate phases in the Li2Ge4O9LiNaGe4O9 system, i.e., Li(Li,Na)Ge4O9, by a glass-ceramic technique using stoichiometric precursor glasses, and have examined the effect of substitution of Na on their photoluminescence properties. The tetragermanate phases indicated clear red emission based on a 2E→4A2 transition, and the entire substitution resulting in an LiNaGe4O9 phase provided an improvement of quenching temperature for the emission. Furthermore, the LiNaGe4O9 phase synthesized by solid-state reaction showed a high internal quantum yield and red color purity, demonstrating it to be a possible candidate as a rare-earth-free red phosphor.
KW - Germanate
KW - Manganese ion
KW - Phosphor
KW - Rare-earth free
KW - Red emission
UR - http://www.scopus.com/inward/record.url?scp=84940949030&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84940949030&partnerID=8YFLogxK
U2 - 10.2109/jcersj2.123.888
DO - 10.2109/jcersj2.123.888
M3 - Article
AN - SCOPUS:84940949030
VL - 123
SP - 888
EP - 891
JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
SN - 1882-0743
IS - 1441
ER -