Abstract
Green light-emitting Lu 2.985Al 5O 12:Ce 0.015 (LuAG:Ce) phosphor powders are prepared by spray pyrolysis. The only crystallized phase in the precursor powders and post-treated powders at temperatures below 800°C is Lu 2O 3 and the other components are amorphous. Phase pure cubic garnet LuAG:Ce phosphor powders are obtained by post-treatment at 1000°C. Phosphor powders post-treated at temperatures below 1400°C retain the spherical shape of the precursor powders. The mean crystallite sizes of phosphor powders post-treated at 1200, 1400, and 1500°C are 30, 46, and 54 nm, respectively. The excitation spectra contain two bands: a weak band with the maximum peak at 345 nm and a strong broad band in the spectral range from 400 to 490 nm with the maximum peak at 455 nm. The LuAG:Ce phosphor powders have broad emission spectra between 480 and 600 nm, with the maximum peak intensity located at 507 nm. The photoluminescence intensity of the phosphor powders post-treated at 1400°C is 84.2% of that of the powders post-treated at 1500°C.
| Original language | English |
|---|---|
| Pages (from-to) | 1428-1431 |
| Number of pages | 4 |
| Journal | Materials Research Bulletin |
| Volume | 47 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2012 Jun 1 |
| Externally published | Yes |
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Keywords
- A. Optical materials
- B. Chemical synthesis
- D. Optical properties
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
Cite this
Green light-emitting Lu 3Al 5O 12:Ce phosphor powders prepared by spray pyrolysis. / Kim, Hyung Tae; Kim, Jung Hyun; Lee, Jung Kul; Kang, Yun Chan.
In: Materials Research Bulletin, Vol. 47, No. 6, 01.06.2012, p. 1428-1431.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Green light-emitting Lu 3Al 5O 12:Ce phosphor powders prepared by spray pyrolysis
AU - Kim, Hyung Tae
AU - Kim, Jung Hyun
AU - Lee, Jung Kul
AU - Kang, Yun Chan
PY - 2012/6/1
Y1 - 2012/6/1
N2 - Green light-emitting Lu 2.985Al 5O 12:Ce 0.015 (LuAG:Ce) phosphor powders are prepared by spray pyrolysis. The only crystallized phase in the precursor powders and post-treated powders at temperatures below 800°C is Lu 2O 3 and the other components are amorphous. Phase pure cubic garnet LuAG:Ce phosphor powders are obtained by post-treatment at 1000°C. Phosphor powders post-treated at temperatures below 1400°C retain the spherical shape of the precursor powders. The mean crystallite sizes of phosphor powders post-treated at 1200, 1400, and 1500°C are 30, 46, and 54 nm, respectively. The excitation spectra contain two bands: a weak band with the maximum peak at 345 nm and a strong broad band in the spectral range from 400 to 490 nm with the maximum peak at 455 nm. The LuAG:Ce phosphor powders have broad emission spectra between 480 and 600 nm, with the maximum peak intensity located at 507 nm. The photoluminescence intensity of the phosphor powders post-treated at 1400°C is 84.2% of that of the powders post-treated at 1500°C.
AB - Green light-emitting Lu 2.985Al 5O 12:Ce 0.015 (LuAG:Ce) phosphor powders are prepared by spray pyrolysis. The only crystallized phase in the precursor powders and post-treated powders at temperatures below 800°C is Lu 2O 3 and the other components are amorphous. Phase pure cubic garnet LuAG:Ce phosphor powders are obtained by post-treatment at 1000°C. Phosphor powders post-treated at temperatures below 1400°C retain the spherical shape of the precursor powders. The mean crystallite sizes of phosphor powders post-treated at 1200, 1400, and 1500°C are 30, 46, and 54 nm, respectively. The excitation spectra contain two bands: a weak band with the maximum peak at 345 nm and a strong broad band in the spectral range from 400 to 490 nm with the maximum peak at 455 nm. The LuAG:Ce phosphor powders have broad emission spectra between 480 and 600 nm, with the maximum peak intensity located at 507 nm. The photoluminescence intensity of the phosphor powders post-treated at 1400°C is 84.2% of that of the powders post-treated at 1500°C.
KW - A. Optical materials
KW - B. Chemical synthesis
KW - D. Optical properties
UR - http://www.scopus.com/inward/record.url?scp=84862812058&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84862812058&partnerID=8YFLogxK
U2 - 10.1016/j.materresbull.2012.02.050
DO - 10.1016/j.materresbull.2012.02.050
M3 - Article
VL - 47
SP - 1428
EP - 1431
JO - Materials Research Bulletin
JF - Materials Research Bulletin
SN - 0025-5408
IS - 6
ER -