TY - JOUR
T1 - Microwave-assisted hydrothermal synthesis and luminescence properties of Eu3+-doped CdTe quantum dots
AU - Chen, Hu
AU - Liu, Yunfei
AU - Lu, Yinong
AU - Wu, Hongming
AU - Qian, Hao
AU - Huang, Baoshuai
PY - 2014/6
Y1 - 2014/6
N2 - The Eu3+-doped CdTe quantum dots (QDs) have been successfully synthesized in aqueous phase through microwave-assisted hydrothermal method. The as-prepared products were characterized by X-ray diffraction (XRD) technique, high-resolution transmission electron microscope (HRTEM), energy dispersive spectrum (EDS), X-ray photoclectron spectrum (XPS), UV-visble (UV-Vis) absorption spectrum and photoluminescence (PL). As the results show, the average sizes of the cubic phase CdTe and CdTe:1%Eu3+ are an average size of 3.7 nm and 3.5 nm, respectively. The average lattice parameter of CdTe:Eu 3+ decreases with increasing Eu3+ ions concentration. Furthermore, compared to green emission of the host CdTe, the CdTe:1%Eu 3+ presents additional orange fluorescence emission of Eu 3+ ions. Recombination luminescence color is almost located in the yellow region of the CIE 1931, and the CIE 1931 coordinate is (0.448, 0.513). The effect of different Eu3+ doping concentration on the luminescence of CdTe:Eu3+ QDs was discussed in detail. It suggests that CdTe:Eu3+ QDs are potential phosphors for white light-emitting materials.
AB - The Eu3+-doped CdTe quantum dots (QDs) have been successfully synthesized in aqueous phase through microwave-assisted hydrothermal method. The as-prepared products were characterized by X-ray diffraction (XRD) technique, high-resolution transmission electron microscope (HRTEM), energy dispersive spectrum (EDS), X-ray photoclectron spectrum (XPS), UV-visble (UV-Vis) absorption spectrum and photoluminescence (PL). As the results show, the average sizes of the cubic phase CdTe and CdTe:1%Eu3+ are an average size of 3.7 nm and 3.5 nm, respectively. The average lattice parameter of CdTe:Eu 3+ decreases with increasing Eu3+ ions concentration. Furthermore, compared to green emission of the host CdTe, the CdTe:1%Eu 3+ presents additional orange fluorescence emission of Eu 3+ ions. Recombination luminescence color is almost located in the yellow region of the CIE 1931, and the CIE 1931 coordinate is (0.448, 0.513). The effect of different Eu3+ doping concentration on the luminescence of CdTe:Eu3+ QDs was discussed in detail. It suggests that CdTe:Eu3+ QDs are potential phosphors for white light-emitting materials.
KW - Microwave-assisted hydrothermal
KW - photoluminescence
KW - quantum dots
UR - http://www.scopus.com/inward/record.url?scp=84904044257&partnerID=8YFLogxK
U2 - 10.1142/S1793292014500441
DO - 10.1142/S1793292014500441
M3 - 文章
AN - SCOPUS:84904044257
SN - 1793-2920
VL - 9
JO - Nano
JF - Nano
IS - 4
M1 - 1450044
ER -