Abstract
Nanoparticles of ZnS capped with tri-n-octylphosphineoxide (TOPO) and close to monodispersed have been prepared by a single-source route using ethyl(di-ethyldithiocarbamato)zinc(II) as a precursor. The nanoparticles obtained showed quantum size effects in their optical spectra, and the photoluminescence spectrum showed a broad emission that could be attributed to the surface traps. A blue shift of 0.31 eV in relation to the bulk material was observed. The selected area electron diffraction, x-ray diffraction pattern and transmission electron microscopy showed the material to be of the zinc blend structure. The crystallinity of the material was also evident from high-resolution transmission electron microscopy, which gave well-defined images of nano-sized particles with clear lattice fringes and a spacing of approximately 3 Å, corresponding to the (111) planes of the cubic crystalline ZnS phase and in the size range of 3.9–4.9 nm. The presence of strong phosphorus peak in the energy dispersion analytical x-ray pattern, together with a shift in infrared band for P = O of TOPO showed that the particles were TOPO capped.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
D. Duongong, J. Ramsden, and M. Gratzel, J. Am. Chem. Soc. 104, 2977 (1982).
R. Rossetti, J.L Ellison, J.M. Gibson, and L.E Brus, J. Chem. Phys. 80A, 4464 (1984).
A. Henglein, Chem. Rev. 89, 1861 (1989).
M.L. Steigerwald, and L.E. Brus, Acc. Chem. Rev. 23, 183 (1990).
Y. Wang and N. Herron, J. Phys. Chem. 95, 525 (1991).
H. Weller, Adv. Mater. 5, 88 (1993).
X. Li, J.R. Fryer, and D.J. Cole-Hamilton, J. Chem. Soc. Chem. Commun. 1715 (1994).
S.W. Haggata, D.J. Cole-Hamilton, and J.R. Fryer, J. Mater. Chem. 7, 1969 (1997).
M. Green and P. O’Brien, Adv. Mater. Opt. Electron. 7, 277 (1997).
K. Sooklal, B.S. Cullum, S.M. Angel, and C.J. Murphy, J. Phys. Chem. 100, 4551 (1996).
A.A. Khosravi, M. Kundu, B.A. Kuruvilla, G.S. Shekhawat, R.P. Gupta, P.D. Vyas, and S.K. Kulkarni, Appl. Phys. Lett. 67(17), 2506 (1995).
W. Chen, Z. Wang, Z. Lin, and L. Lin, Appl. Phys. Lett. 70(11), 1465 (1997).
A. Heinglein and M. Gutierretz, Ber. Bunsen-Ges Phys. Chem. 87, 852 (1983).
R. Rossetti, R. Hull, J.M. Gibson, and L.E Brus, J. Chem. Phys. 82, 552 (1985).
J. Yu, H. Liu, Y. Wang, F.E. Fernandez, W. Jia, L. Sun, C. Jin, D. Li, and S. Huang, Optics Lett. 22(12), 1913 (1997).
Y. Yang, J. Huang, S. Liu, and J. Shen, J. Mater. Chem. 7(1), 131 (1997).
M. Tan, W. Cai, and L. Zhang, Appl. Phys. Lett. 71(25), 3697 (1997).
Y. Li, Y. Ding, Y. Qian, Y. Zhang, and L. Yang, Inorg. Chem. 37, 2844 (1998).
T. Trindade and P. O’ Brien, Adv. Mater. 8, 161 (1996).
T. Trindade and P. O’ Brien, Chem. Mater. 9, 523 (1997).
N. Revaprasadu, M.A. Malik, P. O’ Brien, and G. Wakefield, J. Mater. Chem. 8, 1885 (1998).
(a) M.B. Hursthouse, M.A. Malik, M. Motevalli, and P. O’Brien, Organometallics 10, 730 (1991). (b) M.A. Malik, P. O’Brien, and M. Motevalli, Acta Cryst. C52, 1931 (1996).
X.G. 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, 8706 (1993)
L.E. Brus, J. Chem. Phys. 80, 4403 (1984).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Revaprasadu, N., Malik, M.A., O’Brien, P. et al. Deposition of zinc sulfide quantum dots from a single-source molecular precursor. Journal of Materials Research 14, 3237–3240 (1999). https://doi.org/10.1557/JMR.1999.0437
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1557/JMR.1999.0437