Paper Title:
Enhancement of Blue Emission via Upconversion in Solid-State Synthesized Hexagonal NaYF4:Ln3+
  Abstract

Hexagonal NaYF4:Ln3+ (Ln3+=Yb3+ and Tm3+) was prepared via solid-state synthesis route. The synthesized powders were identified with X-ray diffraction patterns. Hexagonal phase was obtained by heating the powders at 550°C in reducing atmosphere, and the ions of Yb3+ and Tm3+ were completely incorporated into the lattice of hexagonal NaYF4 in the doping concentration range. Microstructure of the phosphor was observed by scanning electron microscopy (SEM). Intense blue (1G4→3H6, 1D2→3F4) and weak red (1G4→3F4) upconversion emission of Tm3+ ions with the energy transferred from Yb3+ ions were observed in the phosphor excited with a 980nm continuous wave laser diode. The intensity of blue emission was effectively enhanced by suitable doping of Tm3+ and Yb3+ ions, and strongest blue emission was obtained with the concentration of 0.2mol% Tm3+ and 40mol% Yb3+ doped.

  Info
Periodical
Key Engineering Materials (Volumes 368-372)
Edited by
Wei Pan and Jianghong Gong
Pages
398-401
DOI
10.4028/www.scientific.net/KEM.368-372.398
Citation
Y. N. Wu, C. H. Cheng, Z. X. Xiong, "Enhancement of Blue Emission via Upconversion in Solid-State Synthesized Hexagonal NaYF4:Ln3+", Key Engineering Materials, Vols. 368-372, pp. 398-401, 2008
Online since
February 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Li Qiong An, Jian Zhang, Min Liu, Sheng Wu Wang
Abstract:Yb3+ and Ho3+ co-doped Lu2O3 nanocrystalline powders were synthesized by a reversestrike co-precipitation method. The as-prepared powders...
521
Authors: Hyung Goo Kang, Joung Kyu Park, Jae Myung Kim, Chang Hae Kim, Seung Chul Choi
Abstract:We have synthesized a Eu2+-activated lanthanide co-doped Sr3SiO5 : Eu yellow-orange phosphor. In this experiment, sample powder has been...
511
Authors: Xu Li, Li Guan, Chong Liu, Feng Cong, Zhi Ping Yang
Abstract:In this study, a novel green phosphor Ca2SrAl2O6:Ce3+,Tb3+ were prepared by solid state method. The crystal structure and particle morphology...
1823
Authors: Ling He, Wei Min Sun, Yu Tian Ding, Yu Hua Wang
Optical/Electronic/Magnetic Materials
Abstract:A novel phosphor, Gd2MoB2O9:Eu3+ has been synthesized by solid-state reaction and its...
1327
Authors: Rui Jin Yu, Jin Young Park, Hyun Kyoung Yang, Byung Kee Moon, Byung Chun Choi, Jung Hyun Jeong
Chapter 1: Material Science and Technology
Abstract:A new deep red-emitting Mn2+-activated SrLaGa3S6O phosphor was first prepared by a solid-state reaction method. Their luminescence properties...
145