scholarly journals Precision tuning of rare-earth-doped upconversion nanoparticles via droplet-based microfluidic screening

2021 ◽  
Author(s):  
Shangkun Li ◽  
Yingchao Meng ◽  
Yujia Guo ◽  
Tian Liu ◽  
Stavros Stavrakis ◽  
...  
Keyword(s):  
Rare Earth ◽  
Upconversion Nanoparticles ◽  
Color Tuning ◽  
Emission Color ◽  
Synthesis Approach ◽  
Rare Earth Doped

A droplet microfluidic-based synthesis approach allows rapid optimization and fine emission color tuning of rare-earth-doped upconversion nanoparticles.

scholarly journals Intra/Inter-Particle Energy Transfer of Luminescence Nanocrystals for Biomedical Applications

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Ching-Ping Liu ◽  
Shih-Hsun Cheng ◽  
Nai-Tzu Chen ◽  
Leu-Wei Lo
Keyword(s):  
Drug Delivery ◽  
Energy Transfer ◽  
Rare Earth ◽  
Biomedical Applications ◽  
Drug Delivery Systems ◽  
Particle Energy ◽  
Upconversion Nanoparticles ◽  
Biological Assays ◽  
Rare Earth Doped ◽  
Luminescent Nanocrystals

Elaborate design of energy transfer systems in luminescent nanocrystals revealed tremendous advantages in nanotechnology, especially in biosensing and drug delivery systems. Recently, upconversion nanoparticles have been discussed as promising probes as labels in biological assays and imaging. This article reviews the works performed in the recent years using quantum dot- and rare-earth doped nanoparticle-based energy transfer systems for biomedical applications.

Synthesis and Research of rare earth-doped color tunable Sr3Gd(PO4)3 phosphors

2019 ◽  
Vol 33 (18) ◽  
pp. 1950201
Author(s):  
Boxin Liang ◽  
Shuangping Yi ◽  
Gengqiao Hu ◽  
Zhixiong Fang ◽  
Zhengfa Hu
Keyword(s):  
Rare Earth ◽  
White Light ◽  
Dipole Interaction ◽  
Critical Distance ◽  
Solid State Method ◽  
Excitation Peak ◽  
Good Thermal Stability ◽  
Emission Color ◽  
Color Tunable ◽  
Rare Earth Doped

Rare earth-doped Sr3Gd(PO4)3 and emission color tunable phosphors Ce[Formula: see text]/Sm[Formula: see text] co-doped Sr3Gd(PO4)3 have been synthesized by a traditional solid-state method. These phosphors were characterized by X-ray diffraction (XRD), FE-SEM, diffuse reflectance spectra (DRS), photoluminescence spectra and lifetime measurements. The quenching concentration of Ce[Formula: see text] ions in Sr3Gd(PO4)3 was about 9 mol.%. An effective energy transfer (ET) from Ce[Formula: see text] ions to Sm[Formula: see text] ions in Sr3Gd(PO4)3 was speculated by the overlapped spectrum for the emission peak of Ce[Formula: see text] and the excitation peak of Sm[Formula: see text] ions. It is demonstrated that the ET mechanism is resonant through the dipole–dipole interaction and the critical distance between Ce[Formula: see text] and Sm[Formula: see text] in Sr3Gd(PO[Formula: see text] is calculated to 15.22 Å. Moreover, Sr3Gd[Formula: see text](PO4)3:0.09Ce[Formula: see text], xSm[Formula: see text] can be adjusted systematically by generating blue light to white light in the CIE diagram which coincide with the ET process of Ce[Formula: see text] ions to Sm[Formula: see text] ions. The Sr3Gd[Formula: see text](PO4)3:0.09Ce[Formula: see text], 0.01Sm[Formula: see text] phosphor also perform at a good thermal stability. All of these experimental results in this work can be served as a potential multicolor tunable phosphor for ultraviolet pumped white light appliance.

scholarly journals Sensing Using Rare-Earth-Doped Upconversion Nanoparticles

Theranostics ◽  
2013 ◽  
Vol 3 (5) ◽  
pp. 331-345 ◽  
Author(s):  
Shuwei Hao ◽  
Guanying Chen ◽  
Chunhui Yang
Keyword(s):  
Rare Earth ◽  
Upconversion Nanoparticles ◽  
Rare Earth Doped

Emission color tuning through manipulating the energy transfer from VO43− to Eu3+ in single-phased LuVO4:Eu3+ phosphors

2017 ◽  
Vol 5 (2) ◽  
pp. 390-398 ◽  
Author(s):  
Fengwen Kang ◽  
Lejing Li ◽  
Jin Han ◽  
Dang Yuan Lei ◽  
Mingying Peng
Keyword(s):  
Energy Transfer ◽  
Rare Earth ◽  
Color Tuning ◽  
Luminescence Centers ◽  
Emission Color

Recently, rare earth (RE) ion doped single-phased phosphors, which can emit tunable colors upon single wavelength excitation, have received a great deal of attention, but most of them involve multiple dopants as luminescence centers.

Emission color tuning of core/shell upconversion nanoparticles through modulation of laser power or temperature

Nanoscale ◽  
2017 ◽  
Vol 9 (33) ◽  
pp. 12132-12141 ◽  
Author(s):  
Qiyue Shao ◽  
Gongtuo Zhang ◽  
Lilai Ouyang ◽  
Yanqing Hu ◽  
Yan Dong ◽  
...  
Keyword(s):  
Laser Power ◽  
Upconversion Nanoparticles ◽  
Core Shell ◽  
Color Tuning ◽  
Temperature Responsive ◽  
Emission Color ◽  
Co Doped

Ho/Tm co-doped core/shell UCNPs with temperature-responsive color-tuning properties were achieved, by taking advantage of the different spectral sensitivities to temperature of Ho3+ and Tm3+ emitters.

Sign in / Sign up

Export Citation Format

Share Document