Abstract
Re-dispersible CdS, 5 at.% Eu3+-doped CdS, 2 at.% Li+ and 5 at.% Eu3+ co-doped CdS nanoparticles in organic solvent are prepared by urea hydrolysis in ethylene glycol medium at a low temperature of 170°C. CdS nanoparticles have spherical shape with a diameter of ∼80 nm. The asymmetric ratio (A 21) of the integrated intensities of the electrical dipole transition to the magnetic dipole transition for 5 at.% Eu3+-doped CdS is found to be 3.8 and this ratio is significantly decreased for 2 at.% Li+ and 5 at.% Eu3+ co-doped CdS (A 21 = 2.6). It establishes that the symmetry environment of Eu3+ ion is more favored by Li-doping. Extra peak at 550 nm (green emission) could be seen for 2 and 5 at.% Eu3+ co-doped CdS. Also, the significant energy transfer from host CdS to Eu3+ is found for 5 at.% Eu3+-doped CdS compared to that for 2 at.% Li+ and 5 at.% Eu3+ co-doped CdS.
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L Yang, Q Shen, J Zhou and K Jiang, Mater. Chem. Phys. 98, 125 (2006)
A P Alivisatos, J. Phys. Chem. B100, 13226 (1996)
A P Alivisatos, Science 271, 933 (1996)
X Peng, J Wickham and A P Alivisatos, J. Am. Chem. Soc. 120, 5343 (1998)
C B Murray, D J Norris and M G Bawendi, J. Am. Chem. Soc. 115, 706 (1993)
S Tiwari and S Tiwari, Solar Energy Materials & Solar Cells 90, 1621 (2006)
H Zhang, X Fu, S Niu, G Sun and Q Xin, J. Lumin. 115, 7 (2005)
Y Qian, K Hara, H Munekata and H Kukimoto, Jpn. J. Appl. Phys. 34, L368 (1995)
S Bachir, K Azuma, J Kossanyi and P Valat, J. Lumin. 75, 35 (1997)
J C Ronfard-Haret and J Kossanyi, Chem. Phys. 241, 339 (1999)
J S Bae, S B Kim, J H Jeong, J C Park, D K Kim, S H Byeon and S S Yi, Thin Solid Films 471, 225 (2005)
M Morita, D Rau, H Fujii, Y Minami, S Murakami, M Baba, M Yoshita and H Akiyama, J. Lumin. 87–89, 478 (2000)
A A Bol, R van Beek and A Maijerink, Chem. Mater. 14, 1121 (2002)
T Uchihara, H Kato and E Miyagi, J. Photochem. Photobiol. A: Chem. 181, 86 (2006)
A I Savchuk, V I Fediv, A G Voloshchuk, T A Savchuk, Yu Yu Bacherikov and A Perrone, Mater. Sci. Eng. C26, 809 (2006)
D-W Deng, J-S Yu and Y Pan, J. Colloid Interface Sci. 299, 225 (2006)
A Chahbouna, A G Roloa, S A Filonovicha and M J M Gomes, Solar Energy Materials & Solar Cells 90, 1413 (2006)
C Cheng, G Xu, H Zhang, H Wang, J Cao and H Ji, Mater. Chem. Phys. 97, 448 (2006)
R S Ningthoujam, V Sudarsan and S K Kulshreshtha, J. Lumin. 127, 747 (2007)
G Zhu, K D-Tomsia, H Yu, H Y Motlan and E M Goldys, Solid State Commun. 137, 503 (2006)
G Karve, B Bihari and R T Chen, Appl. Phys. Lett. 14, 1253 (2000)
D An, Z Yue and R T Chen, Appl. Phys. Lett. 72, 2806 (1998)
S Lin, J Feuerstein and A R Mickelson, J. Appl. Phys. 79, 2868 (1996)
M Fuentes, C Mateo, A Rodriguez, M Casqueiro, J C Tercero, H H Riese, R Fernandez-Lafuente and J M Guisan, Biosensors and Bioelectronics 21, 1574 (2006)
L Yang, Q Shen, J Zhou and K Jiang, Mater. Chem. Phys. 98, 125 (2006)
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Gajbhiye, N.S., Ningthoujam, R.S., Ahmed, A. et al. Re-dispersible Li+ and Eu3+ co-doped CdS nanoparticles: Luminescence studies. Pramana - J Phys 70, 313–321 (2008). https://doi.org/10.1007/s12043-008-0050-z
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DOI: https://doi.org/10.1007/s12043-008-0050-z