Abstract
The specific features in the formation of IV–VI (PbS) quantum dots in a vitreous fluorophosphate matrix are investigated by X-ray microanalysis, high-resolution scanning transmission electron microscopy (STEM), high-resolution X-ray diffraction, and optical absorption spectroscopy. A complete characterization of the nanocrystals grown (their sizes and morphology) in the glass is performed on the basis of the results obtained. It is demonstrated that spherical PbS nanocrystals with a cubic lattice of the NaCl type are formed in fluorophosphate glasses synthesized. The nanocrystals are uniformly distributed over the matrix bulk and are characterized by a narrow size distribution (ΔR/R ≈ 7%) in the studied size range R ≈ 2.0–15 nm, which corresponds to strong quantum confinement.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
REFERENCES
Guerreiro, T.P., Borelli, N.F., Butty, J., and Peygbhambarian, N., PbS Quantum-Dot Doped Glasses as Saturable Absorbers for Mode Locking of Cr: Forsterite Laser, Appl. Phys. Lett., 1997, vol. 71, no. 12, pp. 1595–1607.
Takada, T., Nihei, Y., Yano, T., and Yasumory, A., Preparation of PbS-Doped Glasses by Photochemical Process, Proceedings of the International Conference on Science and Technology of New Glasses, Tokyo, 1991, pp. 418–423.
Nogami, M., Microcrystalline PbS Silica Glasses Prepared by Sol-Gel Process, J. Non-Cryst. Solids, 1990, vol. 126, pp. 87–92.
Borelli, N.F. and Smith, D.W., Quantum Confinement of PbS Microcrystals in Glass, J. Non-Cryst. Solids, 1994, vol. 180, pp. 25–31.
Reynoso, V.C.S., Yukimitu, K., Nogami, T., and Carvalho, C.L., Synthesis and Growth of PbS Semiconductor Nanocrystallites into SiO2-B2O3-Na2O-ZnO Glass Matrix, J. Mater. Sci. Lett., 2001, vol. 20, no. 12, pp.3450–3458.
Kolobkova, E.V., Lipovskii, A.A., and Petrikov, V.D., Fluorophosphate Glasses Containing PbSe Quantum Dots, Fiz. Khim. Stekla, 2002, vol. 28, no. 4, pp. 349–356 [Glass Phys. Chem. (Engl. transl.), 2002, vol. 28, no.4, pp. 246-250].
Lipovskii, A.A., Kolobkova, E.V., and Petrikov, V.D., Formation of II-VI Nanocrystals in Novel Phosphate Glass, J. Cryst. Growth, 1998, vols. 184-185, pp. 365–369.
Andreev, A.D. and Lipovskii, A.A., Anisotropy-Induced Forbidden Transitions in PbSe and PbS Spherical Quantum Dots, Phys. Rev. B: Condens. Matter, 1999, vol. 59, no. 23, pp. 15 402–15 404.
Lifshitz, E.M. and Pitaevskii, L.P., Fizicheskaya Kinetika (Physical Kinetics), Moscow: Nauka, 1979.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kolobkova, E.V., Lipovskii, A.A., Petrikov, V.D. et al. Fluorophosphate Glasses with Quantum Dots Based on Lead Sulfide. Glass Physics and Chemistry 28, 251–255 (2002). https://doi.org/10.1023/A:1019918530283
Issue Date:
DOI: https://doi.org/10.1023/A:1019918530283