Abstract
Using atomistic tight-binding theory in conjunction with the configuration interaction description, I investigate the structural and optical properties of colloidal CdSe zinc-blende nanoplatelets. I highlight that the new class of CdSe zinc-blende nanoplatelets has strong thickness and lateral size dependence on the natural properties. In an effort to theoretically demonstrate the dependent atomistic behaviors, the single-particle spectra, orbital occupation, optical band gaps, electron–hole wave function overlaps, oscillation strengths, ground-state Coulomb energies and Stokes shift are realized under different lateral \((l_x)\) and vertical \((l_z)\) sizes. The electronic structures and optical properties of CdSe zinc-blende nanoplatelets are monotonically dependent on the lateral sizes, while those of CdSe zinc-blende nanoplatelets are nonmonotonically sensitive to the vertical sizes. This atomistic prediction will contribute to the understanding of physical behaviors in colloidal CdSe zinc-blende nanoplatelets and will deliver some significant data for experimental study which can be produced by inexpensive means.
Similar content being viewed by others
References
Flynn, C.J., Oh, E.E., McCullough, S.M., Call, R.W., Donley, C.L., Lopez, R., Cahoon, J.F.: Hierarchically-structured NiO nanoplatelets as mesoscale p-type photocathodes for dye-sensitized solar cells. J. Phys. Chem. C 118(26), 14177–14184 (2014)
Zhang, Y.-Z., Pang, H., Sun, Y., Lai, W.-Y., Wei, Ang, Huang, Wei: Porous tin oxide nanoplatelets as excellent-efficiency photoelectrodes and gas sensors. Int. J. Electrochem. Sci. 8, 3371–3378 (2013)
de Kergommeaux, A., Lopez-Haro, M., Pouget, S., Zuo, J.-M., Lebrun, Colette, Chandezon, Frédéric, Aldakov, Dmitry, Reiss, Peter: Synthesis, internal structure, and formation mechanism of monodisperse tin sulfide nanoplatelets. J. Am. Chem. Soc. 137(31), 9943–9952 (2015)
Li, H., Zhitomirsky, D., Grossman, J.C.: Tunable and energetically robust PbS nanoplatelets for optoelectronic applications. Chem. Mater. 28(6), 1888–1896 (2016)
Achtstein, A.W., Antanovich, A., Prudnikau, A., Scott, R., Woggon, Ulrike, Artemyev, Mikhail: Linear absorption in CdSe nanoplates: thickness and lateral size dependency of the intrinsic absorption. J. Phys. Chem. C 119(34), 20156–20161 (2015)
Vitukhnovsky, A.G., Lebedev, V.S., Selyukov, A.S., Vashchenko, A.A., Vasiliev, R.B., Sokolikova, M.S.: Electroluminescence from colloidal semiconductor CdSe nanoplatelets in hybrid organic–inorganic light emitting diode. Chem. Phys. Lett. 619, 185–188 (2015)
Antanovich, A., Prudnikau, A., Matsukovich, A., Achtstein, A., Artemyev, Mikhail: Self-assembly of CdSe nanoplatelets into stacks of controlled size induced by ligand exchange. J. Phys. Chem. C 120(10), 5764–5775 (2016)
Benchamekh, R., Gippius, N.A., Even, J., Nestoklon, M.O., Jancu, J.-M., Ithurria, S., Dubertret, B., Efros, Al L., Voisin, P.: Tight-binding calculations of image-charge effects in colloidal nanoscale platelets of CdSe. Phys. Rev. B 89, 035307–035313 (2014)
Ithurria, S., Tessier, M.D., Mahler, B., Lobo, R.P.S.M., Dubertret, B., Efros, Al L.: Colloidal nanoplatelets with two-dimensional electronic structure. Nat. Mater. 10, 936–941 (2011)
Mahler, B., Nadal, B., Bouet, C., Patriarche, G., Dubertret, Benoit: Core/shell colloidal semiconductor nanoplatelets. J. Am. Chem. Soc. 134(45), 18591–18598 (2012)
Li, Q., Kaifeng, W., Chen, J., Chen, Z., McBride, James R., Lian, Tianquan: Size-independent exciton localization efficiency in colloidal CdSe/CdS core/crown nanosheet type-I heterostructures. ACS Nano 10(3), 3843–3851 (2016)
Lee, S., Oyafuso, F., von Allmen, P., Klimeck, G.: Boundary conditions for the electronic structure of finite-extent embedded semiconductor nanostructures. Phys. Rev. B 69, 045316–045323 (2004)
Sukkabot, W.: Tight-binding calculation of exciton states in InAs nanocrystals. Integr. Ferroelectr. 156, 29–35 (2014)
Sukkabot, W.: Role of structural and compositional details in atomistic tight-binding calculations for InN nanocrystals. Mater. Sci. Semicond. Process. 38, 142–148 (2015)
Sukkabot, W.: Structural properties of SiC zinc-blende and wurtzite nanostructures: atomistic tight-binding theory. Mater.Sci. Semicond. Process. 40, 117–122 (2015)
Vogl, P., Hjalmarson, H.P., Dow, J.D.: A Semi-empirical tight-binding theory of the electronic structure of semiconductors. J. Phys. Chem. Solids 44, 365–378 (1983)
Hakan Gurel, H., Akinci, O., Unlu, H.: Tight binding modeling of CdSe/ZnS and CdZnS/CdS II-VI heterostructures for solar cells: role of d-orbitals. Thin Solid Films 516, 7098–7104 (2008)
Slater, J.C., Koster, G.F.: Simplified LCAO method for the periodic potential problem. Phys. Rev. 94, 1498–1524 (1954)
Luo, J.W., Franceschetti, A., Zunger, A.: Nonmonotonic size dependence of the dark/bright exciton splitting in GaAs nanocrystals. Phys. Rev. B 79, 201301(R)–201304(R) (2009)
Bester, G., Nair, S., Zunger, A.: Pseudopotential calculation of the excitonic fine structure of million-atom self-assembled \(\text{ In }_{1-x}\text{ Ga }_{x}\text{ As/GaAs }\) quantum dots. Phys. Rev. B 67, 161306(R)–161309(R) (2003)
Korkusinski, M., Hawrylak, P.: Atomistic theory of emission from dark excitons in self-assembled quantum dots. Phys. Rev. B 87, 115310–115320 (2013)
Zieliński, M.: Valence band offset, strain and shape effects on confined states in self-assembled InAs/InP and InAs/GaAs quantum dots. J. Phys. Condens. Matter. 25, 465301–465316 (2013)
Sheng, W., Cheng, S.-J., Hawrylak, P.: Multiband theory of multi-exciton complexes in self-assembled quantum dots. Phys. Rev. B 71, 035316–035324 (2005)
Lee, S., Jonsson, L., Wilkins, J.W., Bryant, G.W., Klimeck, Gerhard: Electron-hole correlations in semiconductor quantum dots with tight-binding wave functions. Phys. Rev. B 63, 195318–195330 (2001)
Franceschetti, A., Fu, H., Wang, L.W., Zunger, A.: Many-body pseudopotential theory of excitons in InP and CdSe quantum dots. Phys. Rev. B 60, 1819–1829 (1999)
Franceschetti, A., Wang, L.W., Fu, H., Zunger, A.: Short-range versus long-range electron-hole exchange interactions in semiconductor quantum dots. Phys. Rev. B 58, R13367–R13370 (1998)
Chwastyk, M., Rozanski, P., Zielinski, M.: Atomistic calculation of coulomb interactions in semiconductor nanocrystals: role of surface passivation and composition details. Acta Phys. Polon. A 122, 324–328 (2012)
Wang, L.W., Califano, M., Zunger, A., Franceschetti, A.: Pseudopotential theory of Auger processes in CdSe quantum dots. Phys. Rev. Lett. 91, 056404–056407 (2003)
Moreels, I., Allan, G., De Geyter, B., Wirtz, L., Delerue, C., Hens, Z.: Dielectric function of colloidal lead chalcogenide quantum dots obtained by a Kramers-Krönig analysis of the absorbance spectrum. Phys. Rev. B 81, 235319–235325 (2010)
Ogut, S., Burdick, R., Saad, Y., Chelikowsky, J.R.: Ab initio calculations for large dielectric matrices of confined systems. Phys. Rev. Lett. 90, 127401–127404 (2003)
Delerue, C., Lannoo, M., Allan, G.: Concept of dielectric constant for nanosized systems. Phys. Rev. B 68, 115411–115414 (2003)
Wang, L.W., Zunger, A.: Pseudopotential calculations of nanoscale CdSe quantum dots. Phys. Rev. B 53, 9579–9582 (1996)
Nazzal, A., Huaxiang, F.: Comparative theoretical study of the size dependent electronic and optical properties in CdS and CdSe spherical nanocrystals. J. Comput. Theor. Nanosci. 6, 1277–1289 (2009)
Korkusinski, M., Voznyy, O., Hawrylak, P.: Fine structure and size dependence of exciton and biexciton optical spectra in CdSe nanocrystals. Phys. Rev. B 82, 245304–245319 (2010)
Acknowledgements
The author would like to acknowledge the financial support from the Thailand Research Fund Grants (TRG58880072) and Department of Physics, Faculty of Science, Ubon Ratchathani University, Thailand.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Sukkabot, W. Atomistic tight-binding theory in 2D colloidal CdSe zinc-blende nanoplatelets. J Comput Electron 16, 796–804 (2017). https://doi.org/10.1007/s10825-017-1017-4
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10825-017-1017-4