One-pot solvothermal synthesis of singly doped Eu3+ and codoped Er3+, Yb3+ heavy rare earth oxysulfide Y2O2S nano-aggregates and their luminescence study

Content Provider	Semantic Scholar
Author	Liu, Hanying Liu, Ping Su, Xiangming Li, Xiaoqing Luo, Hongde Yao, Zhiling Yu, Xibin Zhan, Ming
Copyright Year	2014
Abstract	Highly crystallized micro/nano-sized Y2O2S and RE (Eu3+, Yb3+/Er3+) doped samples were prepared through a one-pot mild (200–250 °C) solvothermal method. By simply adjusting the amount of initial sulfur powder, the morphology and assembled nano-structures could be well controlled. With varying concentration of sulfur powder from 0.08 M to 0.8 M, the morphology and size of the target products varied from 20 nm nanosheets, 2 μm sheet-assembled plates/flowers to 1.5 μm nano-assembled spheres. The luminescence properties of Eu3+ doped Y2O2S with different morphologies were studied. The excitation peak above 300 nm ascribed to S2−–Eu3+ charge transfer showed a blue shift of 9 nm compared with the bulk sample. When co-doped with Yb3+/Er3+, the Y2O2S:Yb3+, Er3+ nano-aggregates exhibited a tunable emission under 980 nm laser excitation, shifting from greenish-yellow to orange-yellow, with increasing Yb3+/Er3+ ratio.
Starting Page	57048
Ending Page	57053
Page Count	6
File Format	PDF HTM / HTML
DOI	10.1039/C4RA10276B
Volume Number	4
Alternate Webpage(s)	https://pubs.rsc.org/en/content/getauthorversionpdf/C4RA10276B
Alternate Webpage(s)	https://doi.org/10.1039/C4RA10276B
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article