Effects of Tm3+ concentration on upconversion luminescence and temperature-sensing behavior in Tm3+/Yb3+:Y2O3 nanocrystals. Academic Article

abstract

• The effects of Tm3+ concentration on upconversion emission and temperature-sensing behavior of Tm3+/Yb3+:Y2O3 nanocrystals were investigated. Blue and red emissions were observed under 980nm excitation. Both upconversion emissions and the blue to red intensity ratio were found to decrease with increasing Tm3+ concentration. The temperature-sensing performances of the samples were studied, the fluorescence intensity ratio of 1G4(a)3H6 (477nm) and 1G4(b)3H6 (490nm) transitions from Tm3+ ions was chosen as the thermometric index. The results showed that the sensor sensitivity was sensitive to Tm3+ ion concentration. The maximum sensitivity of ~3210-4K-1 was obtained for 0.1%Tm3+/5%Yb3+:Y2O3 nanocrystals at 344K. Moreover, a marked optical induced heating effect was also found in the nanocrystals. The prepared Tm3+/Yb3+:Y2O3 nanocrystals could be used in temperature-sensing probes and in optical heaters.

authors

• Xu, Shiqing

published proceedings

• Luminescence

author list (cited authors)

• Chen, G., Lei, R., Huang, F., Wang, H., Zhao, S., & Xu, S.

citation count

• 9

complete list of authors

• Chen, Guangrun||Lei, Ruoshan||Huang, Feifei||Wang, Huanping||Zhao, Shilong||Xu, Shiqing

publication date

• November 2018

publisher

• Wiley  Publisher

published in

• n1522-7235ISSN  Journal

keywords

• Luminescence
• Nanoparticles
• Nanothermometry
• Optical Induced Heating
• Oxides
• Particle Size
• Rare Earth
• Surface Properties
• Temperature
• Thulium
• Upconversion Emission
• Ytterbium
• Yttrium

PubMed Central ID

• 30338620

Digital Object Identifier (DOI)

• 10.1002/bio.3544

start page

• 1262

end page

• 1267

volume

• 33

issue

• 7

URL

• http://dx.doi.org/10.1002/bio.3544