Study of a Strong Luminescent Core Shell Nanocomposite of Europium Complex Coated on Gold Nanoparticles: Synthesis and Properties

Khuyen, Hoang Thi; Hương, Trần Thu; Tung, Do Khanh; Thu, Phùng Thị; Bình, Nguyễn Thanh; Minh, Le Quoc; Anh, Tran Kim; Diep, Lai Ngoc; Lien, Nghiem Thi Ha; Tuấn, Phạm Anh

doi:10.1007/s11664-016-4583-5

Cited by 5 publications

(1 citation statement)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 12(a The research, development and potential application of the upconversion luminescence of nano phosphors in a variety of host compounds have been undertaken intensively in some groups. 18,21,26) These nanospheres and nanoparticles containing Rare Earth ions would open interesting necessary investigations and promising applications in some breakthrough technology. Shortly, research will tend to nano oxides Gd 2 O 3 doped with RE ions (RE = Yb, Nd, Er, Tm and Eu) in the form of nanospheres and their nanocomposites as a platform for the photonics, energy conversion, bioimaging in medicine, and sensing environment.…”

Section: Optical Properties Of Gd 2 O 3 : Er 3+ and Gd 2 Omentioning

confidence: 99%

Upconversion Luminescence Properties of Gd2O3: Er3+ Nanospheres and Gd2O3: Er3+@Silica Nanocomposites

Anh

Hương

et al. 2020

Mater. Trans.

Self Cite

View full text Add to dashboard Cite

The upconversion luminescence (UCL) of Gd 2 O 3 : Er 3+ monodisperse nanospheres, synthesized by multistep chemical method, and nanoparticles, produced by combustion synthesis, are presented for comparison. The UCL of nanospheres Gd 2 O 3 : Er 3+ and Gd 2 O 3 : Er 3+ @Silica have shown strong red or green emission under excitation at 976 nm or 980 nm by a diode laser with a remarkable increase of the bright red color in the nanospheres. In the core/shell structured nanospheres Gd 2 O 3 : Er 3+ @Silica, we find a higher intensity of upcoversion emission, increased stability and better dispersion capability in solvents and water. The UCL intensities of green and red color while 976 nm or 980 nm excitation were dependent on the diode laser power. The slope values of Er 3+ ion's transitions 2 H 11/2 4 I 15/2 , 4 S 3/2 4 I 15/2 and 4 F 9/2 4 I 15/2 in the silica-coated nanospheres are 1.99, 1.62 and 1.66 respectively, which properly indicate the two-photon mechanism of upconversion emission. The synthesized Gd 2 O 3 nanospheres codoped with Yb and Er show strong UCL intensity than those of Gd 2 O 3 : Er 3+ . The obtained Gd 2 O 3 : Er 3+ nanospheres and nanoparticles, as well as Gd 2 O 3 : Yb 3+ , Er 3+ and its silica-coated versions, are promising materials to develop with potential application in high technology and biomedicine.

show abstract

Section: Optical Properties Of Gd 2 O 3 : Er 3+ and Gd 2 Omentioning

confidence: 99%