Upconversion luminescence of yttrium oxysulfide co-doped with rare earth elements

ผู้แต่ง

  • Uthaiwan Injarean Thailand Institute of Nuclear Technology, Chatuchak
  • Pipat Pichestapong Thailand Institute of Nuclear Technology, Chatuchak
  • Thida Ruangsiritanyakul Bank of Thailand, Nakhon Chai Sri
  • Suwassa Tayaniphant Bank of Thailand, Nakhon Chai Sri

คำสำคัญ:

Upconversion, Yttrium oxysulfide, Rare earth, Phosphor

บทคัดย่อ

Rare earth ions doped upconversion phosphors have been used in many applications such as infrared laser detecting, anti-counterfeit protection and solid state display. In this study, yttrium oxysulfide (Y2O2S) compounds co-doped with rare earth elements, ytterbium (Yb), and one of the following elements, erbium (Er), thulium (Tm), europium (Eu) or holmium (Ho) were synthesized from doped rare earth oxides using sulfide fusion method with pelletization pretreatment. The doping was carried out with the mixing of yttrium nitrate and rare earth nitrate solutions to obtain homogeneous mixture. The mixed nitrate solution was precipitated with oxalic acid and calcined to doped oxide precursors. Doping of Yb was 2.5 mol% and the other minor doping was 0.10 and 0.25 mol%. The structure and the morphology of the oxysulfide samples were examined by X-ray diffractometer (XRD) and scanning electron microscope (SEM). The upconversion luminescent characteristic of the synthesis phosphors was investigated with spectrofluorometer and IR laser pen. It was found that, under 980 nm excitation radiation, most of the phosphors exhibited green emission band of 541-552 nm wavelengths except the phosphor co-doped with Yb and Tm (Y2O2S:Yb,Tm) exhibited infrared emission band of 787-810 nm wavelength and slight blue color. Yttrium oxysulfide co-doped with Yb and Ho (Y2O2S:Yb,Ho) showed the highest brightness upconversion luminescence. The luminescence efficiency was seen to increase with the increasing of the dopants.

Downloads

Download data is not yet available.

เอกสารอ้างอิง

Auzel, F. (2004). Upconversion and anti-stokes processes with f and d ions in solids. Chem. Rev. 104 : 139-173.

Wang, M.., Abbineni, G., Clevenger, A., Mao, C. and Inabe, Y. (2011). Upconversion nanoparticles : synthesis, surface modification and biological applications. Nanomedicine : Nanotechnol. Biol Med. 7(6) : 710-729.

Itoh, M. and Inabe, Y. (2003). Optical properties and electronic structure of yttrium oxysulfide. Phys. Rev. B. 68 : 35107-35112.

Jiang, S. and Zhang, Y. (2008). IR-to-visible upconversion nanoparticles for in vitro fluorescent imaging. Biomed. 21 : 330-332.

Liu, Y. and Kuang, J. (2010). Intense visible luminescence from Nd3+-doped yttrium oxysulfide. J. Lumin. 130 : 351-354. 6

. Luo, X. X., Cao, W. H. and Tian, Y. (2007). Characteristic and synthesis mechanism of Gd2O2S:Tb phosphors prepared by cold isostatic press pretreatment. Opt. Mater. 30(2) : 351-356.

Luo, X. X. and Cao, W. H. (2007). Blue, green, red upconversion luminescence and optical characteristics of rare earth doped rare earth oxide and oxysulfide. Sci China Ser B-Chem. 50(4) : 505-513.

ดาวน์โหลด

เผยแพร่แล้ว

2013-06-30

วิธีการอ้างอิง

[1]
U. Injarean, P. Pichestapong, T. Ruangsiritanyakul, และ S. . Tayaniphant, “Upconversion luminescence of yttrium oxysulfide co-doped with rare earth elements”, J Met Mater Miner, ปี 23, ฉบับที่ 1, มิ.ย. 2013.

ฉบับ

บท

Original Research Articles