SYNTHESIS OF ULTRASMALL CD0.3ZN0.7SENANOCRYSTALS VIA MECHANOCHEMICAL ROUTE

Authors

Keywords:

Mechanochemical synthesis, extremely small particles, optical property

Abstract

Mechanical alloying through severe plastic deformation (SPD) was used to synthesize ultrasmall nanocrystals of (Cd0.3Zn0.7Se)with a diameter (d = 1.3 nm) after 20 hours milling time. A high-resolution electron microscope was (HRTEM) used to examine the mechanical deformation on the nanocrystals. The images reveal a bulk-like cluster structure without a distinctive regular shape. The atoms appear to be located entirely at the surface. The energy band-gap of the ultrasmall was determined to be 4.56 eV from UV-Vis absorption spectra.

Dimensions

Aleksandar M. Spasic, J.-P. H. (2005). Finely Dispersed Particles: Micro-, Nano-, and Atto-Engineering. CRC Press.

Apparatus for Mechanochemical Reactions. (2001). In Soft Mechanochemical Synthesis SE - 4 (pp. 59–68). Springer US. https://doi.org/10.1007/0-306-47646-0_4

Brus, L. (1986a). Electronic wave functions in semiconductor clusters: experiment and theory. The Journal of Physical Chemistry, 90(12), 2555–2560. https://doi.org/10.1021/j100403a003

Brus, L. (1986b). Electronic wave functions in semiconductor clusters: experiment and theory. The Journal of Physical Chemistry, 90, 2555–2560. https://doi.org/10.1021/j100403a003

C.Gente,M.Oehring, and R. B. (1993). Formation of thermodynamically unstable solid solutions in the Cu-Co system by mechanical alloying. Phys. Rev. B, 48(18), 244–253.

Chestnoy, N., Harris, T., & Hull, R. (1986). Luminescence and photophysics of CdS semiconductor clusters: the nature of the emitting electronic state. Journal of Physical Chemistry, 90(1984), 3393–3399. https://doi.org/10.1021/j100406a018

Chestnoy, N., Hull, R., & Brus, L. E. (1986). Higher Excited Electronic States in Clusters of Znse, Cdse, and Zns - Spin-Orbit, Vibronic, and Relaxation Phenomena. Journal of Chemical Physics, 85(1986), 2237–2242. https://doi.org/Article

Dai, Q., Duty, C. E., & Hu, M. Z. (2010). Semiconductor-nanocrystals-based white light-emitting diodes. Small (Weinheim an Der Bergstrasse, Germany), 6(15), 1577–1588. https://doi.org/10.1002/smll.201000144

Delogu, F., & Cocco, G. (2005). Numerical simulations of structural modifications at a $mathrm{Ni}text{-}mathrm{Zr}$ sliding interface. Physical Review B, 72(1), 14124.

Delogu, F., & Cocco, G. (2006a). Crystallite size refinement in elemental species under mechanical processing conditions. Materials Science and Engineering: A, 422(1–2), 198–204. https://doi.org/10.1016/j.msea.2006.02.032

Delogu, F., & Cocco, G. (2006b). Microstructural refinement of ceramic powders under mechanical processing conditions. Journal of Alloys and Compounds, 420(1–2), 246–250. https://doi.org/10.1016/j.jallcom.2005.10.037

Eckert, J., Holzer, J. C., Krill, C. E., & Johnson, W. L. (1992). Structural and thermodynamic properties of nanocrystalline fcc metals prepared by mechanical attrition. Journal of Materials Research, 7(07), 1751–1761.

Eckert, J., Holzer, J. C., Krill, C. E., & Johnson, W. L. (1993). Mechanically driven alloying and grain size changes in nanocrystalline Feâ€Cu powders. Journal of Applied Physics, 73(6).

Hankare, P. P., Chate, P. a., Asabe, M. R., Delekar, S. D., Mulla, I. S., & Garadkar, K. M. (2006). Characterization of Cd1−x Zn x Se thin films deposited at low temperature by chemical route. Journal of Materials Science: Materials in Electronics, 17, 1055–1063. https://doi.org/10.1007/s10854-006-9034-2

Hellstern, E., Fecht, H. J., Fu, Z., & Johnson, W. L. (1989). Structural and thermodynamic properties of heavily mechanically deformed Ru and AlRu. Journal of Applied Physics, 65(1).

Kang, H. S., Kim, J. W., Kim, J. H., Lee, S. Y., Li, Y., Lee, J.-S., … Jia, Q. X. (2006). Optical property and Stokes’ shift of Zn[sub 1−x]Cd[sub x]O thin films depending on Cd content. Journal of Applied Physics, 99(6), 066113. https://doi.org/10.1063/1.2186372

Koch, C. C. (1993). The synthesis and structure of nanocrystalline materials produced by mechanical attrition: A review. Nanostructured Materials, 2(2), 109–129. https://doi.org/http://dx.doi.org/10.1016/0965-9773(93)90016-5

Landes, C. F., Braun, M., & El-Sayed, M. a. (2001). On the nanoparticle to molecular size transition: Fluorescence quenching studies. Journal of Physical Chemistry B, 105, 10554–10558. https://doi.org/10.1021/jp0118726

P.Yu. Butyagin. (1989). Sov.Sci.Rev., 1(14).

Patra, S., & Pradhan, S. K. (2010). Microstructure and optical characterization of CdTe quantum dots synthesized in a record minimum time. Journal of Applied Physics, 108(8), 083515. https://doi.org/10.1063/1.3498814

Pouryazdan, M., Schwen, D., Wang, D., Scherer, T., Hahn, H., Averback, R. S., & Bellon, P. (2012). Forced chemical mixing of immiscible Ag-Cu heterointerfaces using high-pressure torsion. Physical Review B, 86(14), 144302. https://doi.org/10.1103/PhysRevB.86.144302

Remarks, C. (1991). Nonlinear Optical Properties of Nanometer-Sized Semiconductor Clusters, 20837(11), 133–139.

Soloviev, V., & Eichhöfer, A. (2000). Molecular limit of a bulk semiconductor: Size dependence of the “band gap†in CdSe cluster molecules. Journal of the American …, (16), 2673–2674.

Suryanarayana, C. (2001). Mechanical alloying and milling. Progress in Materials Science, 46(1–2), 1–184. https://doi.org/10.1016/S0079-6425(99)00010-9

Tan, G.-L., Wang, M., Wang, K., Zhang, L., & Yu, X.-F. (2011). Optical properties and ferromagnetism of ternary Cd1−x Mn x Te nanocrystals. Journal of Nanoparticle Research, 13(11), 5799–5807. https://doi.org/10.1007/s11051-010-0188-8

Tan, G. (2003). Synthesis and optical characterization of CdTe nanocrystals prepared by ball milling process. Scripta Materialia, 48(10), 1469–1474. https://doi.org/10.1016/S1359-6462(03)00079-4

Teunis, M. B., Dolai, S., & Sardar, R. (2014). E ff ects of Surface-Passivating Ligands and Ultrasmall CdSe Nanocrystal Size on the Delocalization of Exciton Con fi nement.

Wu, S., Chu, H., Xu, H., Wang, X., Yuan, N., Li, Y., … Schelly, Z. A. (2008). Oscillation of absorption bands of Zn 1− x Mn x S clusters: an experimental and theoretical study. Nanotechnology, 19(5), 55703.

Wu, S., Liu, H., Liu, H., Wu, Z., Du, Z., & Schelly, Z. a. (2007). Synthesis and bandgap variation of molecular-size CdSe clusters via electroporation of vesicles. Nanotechnology, 18, 485607. https://doi.org/10.1088/0957-4484/18/48/485607

Published

02-07-2020

How to Cite

SYNTHESIS OF ULTRASMALL CD0.3ZN0.7SENANOCRYSTALS VIA MECHANOCHEMICAL ROUTE. (2020). FUDMA JOURNAL OF SCIENCES, 4(2), 238-243. https://doi.org/10.33003/fjs-2020-0402-215

Issue

Vol. 4 No. 2 (2020): FUDMA Journal of Sciences - Vol. 4 No. 2

Section

Research Articles
Copyright & Licensing

FUDMA Journal of Sciences

How to Cite

SYNTHESIS OF ULTRASMALL CD0.3ZN0.7SENANOCRYSTALS VIA MECHANOCHEMICAL ROUTE. (2020). FUDMA JOURNAL OF SCIENCES, 4(2), 238-243. https://doi.org/10.33003/fjs-2020-0402-215

Most read articles by the same author(s)