Abstract
The transparent colloidal solution of LaPO4:Ce,Tb nano-phosphor is synthesized from lanthanum acetate, cerium acetate, terbium acetate and trimethyl phosphate by the solvothermal reaction at 140°C in the mixture of water and methanol. The green photoluminescence (PL) due to the f-f transition of Tb3+ is observed by exciting the d-f transition of Ce 3+, followed by the energy transfer from Ce3+ to Tb 3+. The surface modification of LaPO4:Ce,Tb nano-phosphor powder by lauryl phosphate increases the PL intensity by a factor of 18. The surface modification is effective for LaPO4:Ce, but not for LaPO 4:Tb. These results suggest that the surface-passivation plays a significant role in the suppression of energy loss and the higher site-symmetry around Ce3+.
| Original language | English |
|---|---|
| Title of host publication | IDW/AD'05 - Proceedings of the 12th International Display Workshops in Conjunction with Asia Display 2005 |
| Pages | 513-516 |
| Number of pages | 4 |
| Edition | 1 |
| Publication status | Published - 2005 |
| Event | IDW/AD'05 - 12th International Display Workshops in Conjunction with Asia Display 2005 - Takamatsu, Japan Duration: 2005 Dec 6 → 2005 Dec 9 |
Other
| Other | IDW/AD'05 - 12th International Display Workshops in Conjunction with Asia Display 2005 |
|---|---|
| Country | Japan |
| City | Takamatsu |
| Period | 05/12/6 → 05/12/9 |
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ASJC Scopus subject areas
- Engineering(all)
Cite this
Effects of surface modification on photoluminescence properties of LaPO4 : Ce,Tb nano-phosphor synthesized by solvotliernial reaction. / Nishimura, F.; Isobe, Tetsuhiko.
IDW/AD'05 - Proceedings of the 12th International Display Workshops in Conjunction with Asia Display 2005. 1. ed. 2005. p. 513-516.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Effects of surface modification on photoluminescence properties of LaPO4
T2 - Ce,Tb nano-phosphor synthesized by solvotliernial reaction
AU - Nishimura, F.
AU - Isobe, Tetsuhiko
PY - 2005
Y1 - 2005
N2 - The transparent colloidal solution of LaPO4:Ce,Tb nano-phosphor is synthesized from lanthanum acetate, cerium acetate, terbium acetate and trimethyl phosphate by the solvothermal reaction at 140°C in the mixture of water and methanol. The green photoluminescence (PL) due to the f-f transition of Tb3+ is observed by exciting the d-f transition of Ce 3+, followed by the energy transfer from Ce3+ to Tb 3+. The surface modification of LaPO4:Ce,Tb nano-phosphor powder by lauryl phosphate increases the PL intensity by a factor of 18. The surface modification is effective for LaPO4:Ce, but not for LaPO 4:Tb. These results suggest that the surface-passivation plays a significant role in the suppression of energy loss and the higher site-symmetry around Ce3+.
AB - The transparent colloidal solution of LaPO4:Ce,Tb nano-phosphor is synthesized from lanthanum acetate, cerium acetate, terbium acetate and trimethyl phosphate by the solvothermal reaction at 140°C in the mixture of water and methanol. The green photoluminescence (PL) due to the f-f transition of Tb3+ is observed by exciting the d-f transition of Ce 3+, followed by the energy transfer from Ce3+ to Tb 3+. The surface modification of LaPO4:Ce,Tb nano-phosphor powder by lauryl phosphate increases the PL intensity by a factor of 18. The surface modification is effective for LaPO4:Ce, but not for LaPO 4:Tb. These results suggest that the surface-passivation plays a significant role in the suppression of energy loss and the higher site-symmetry around Ce3+.
UR - http://www.scopus.com/inward/record.url?scp=33644584962&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33644584962&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:33644584962
SP - 513
EP - 516
BT - IDW/AD'05 - Proceedings of the 12th International Display Workshops in Conjunction with Asia Display 2005
ER -