| 학회 |
한국재료학회 |
| 학술대회 |
2006년 봄 (05/19 ~ 05/20, 경상대학교 ) |
| 권호 |
12권 1호 |
| 발표분야 |
나노 및 생체재료 |
| 제목 |
Luminescence Properties of Er3+ doped YbPO4/YbPO4 Core/Shell Nanoparticles |
| 초록 |
Er3+ doped YbPO4 nanoparticles capped with ligand, which provide a rigid crystal environment for the dopant ions and can be easily dispersed without agglomeration in organic solvent, may be considered as active components in light-emitting devices, low-threshold lasers, optical amplifiers, and for the labeling of biomolecules. However, it is reported that the quantum efficiency of Er3+ doped YbPO4 nanoparticles is still low. It is attributed to the energy-loss occurred by high energy vibration of organic ligands and OH group adsorbed at the particle surface. In this work, to enhance the quantum efficiency of Er3+ doped YbPO4 nanoparticles, Er3+ doped YbPO4/YbPO4 core/shell nanoparticles were synthesized by the solution method using a high boiling coordinating solvent. The crystallinity and morphology of Er3+ doped YbPO4/YbPO4 core/shell nanoparticles were investigated by XRD and TEM. The photoluminescence spectroscopic studies of the Er3+ doped core/shell nanoparticles were performed. Also, the luminescence lifetime and the quantum yield of the Er3+ emission were measured. |
| 저자 |
Mi Ae Lim1, Sang Il Seok2, In chan Baek1, Bok Yeop Ahn2, Sunirmal Jana1, Nimai Chand Pramanik2, Seok In Hong1
|
| 소속 |
1Advanced Materials Division, 2Korea Research Institute of Chemical Technology |
| 키워드 |
YbPO4; core/shell; luminescence
|
| E-Mail |
|
