Dielectric environment effect on linear and nonlinear optical properties for CdS/ZnS core/shell quantum dots
作者： N. Zeiri , A. Naifar , S. Abdi-Ben Nasrallah , M. Said
DOI: 10.1016/J.RINP.2019.102661
关键词:
摘要: Abstract The eigenvalues, transition energy, the linear and nonlinear dielectric functions have been numerically investigated for CdS/ZnS spherical core/shell quantum dots embedded in various matrices. evaluation was carried out three commonly used matrices, such as PVA, PMMA SiO2. Calculations were done under effective mass approximation compact density matrix approach. Results revealed that optical property is strongly affected by nature of material. By increasing radii ratio energy states well are decreasing. It also indicated presence mismatch QD-matrix system can cause significant enhancement on third order function.
harvard.edu
elsevier.com
sci-hub.se 参考文章(42)
M. Sudha, S. Senthilkumar, R. Hariharan, A. Suganthi, M. Rajarajan, Controlled reduction of the deleterious effects of photocatalytic activity of ZnO nanoparticles by PVA capping Journal of Sol-Gel Science and Technology. ,vol. 61, pp. 14- 22 ,(2012) , 10.1007/S10971-011-2584-7
Joseph W. Haus, H. S. Zhou, I. Honma, H. Komiyama, Quantum confinement in semiconductor heterostructure nanometer-size particles. Physical Review B. ,vol. 47, pp. 1359- 1365 ,(1993) , 10.1103/PHYSREVB.47.1359
VI Klimov, AA Mikhailovsky, Su Xu, A Malko, JA Hollingsworth, a CA Leatherdale, H-J Eisler, MG Bawendi, Optical gain and stimulated emission in nanocrystal quantum dots. Science. ,vol. 290, pp. 314- 317 ,(2000) , 10.1126/SCIENCE.290.5490.314
J. Nanda, S. A. Ivanov, H. Htoon, I. Bezel, A. Piryatinski, S. Tretiak, V. I. Klimov, Absorption cross sections and Auger recombination lifetimes in inverted core-shell nanocrystals: Implications for lasing performance Journal of Applied Physics. ,vol. 99, pp. 034309- ,(2006) , 10.1063/1.2168032
Joel Jean, Sehoon Chang, Patrick R. Brown, Jayce J. Cheng, Paul H. Rekemeyer, Moungi G. Bawendi, Silvija Gradečak, Vladimir Bulović, ZnO Nanowire Arrays for Enhanced Photocurrent in PbS Quantum Dot Solar Cells Advanced Materials. ,vol. 25, pp. 2790- 2796 ,(2013) , 10.1002/ADMA.201204192
Tomoyuki Akiyama, Osamu Wada, Haruhiko Kuwatsuka, Takashi Simoyama, Yoshiaki Nakata, Kohki Mukai, Mitsuru Sugawara, Hiroshi Ishikawa, Nonlinear processes responsible for nondegenerate four-wave mixing in quantum-dot optical amplifiers Applied Physics Letters. ,vol. 77, pp. 1753- 1755 ,(2000) , 10.1063/1.1311319
Sungjee Kim, Brent Fisher, Hans-Jürgen Eisler, Moungi Bawendi, Type-II Quantum Dots: CdTe/CdSe(Core/Shell) and CdSe/ZnTe(Core/Shell) Heterostructures Journal of the American Chemical Society. ,vol. 125, pp. 11466- 11467 ,(2003) , 10.1021/JA0361749
Anchala, S. P. Purohit, K. C. Mathur, Photoabsorption and photoelectric process in Si nanocrystallites Applied Physics Letters. ,vol. 98, pp. 043106- ,(2011) , 10.1063/1.3548861
Zaiping Zeng, Christos S. Garoufalis, Andreas F. Terzis, Sotirios Baskoutas, Linear and nonlinear optical properties of ZnO/ZnS and ZnS/ZnO core shell quantum dots: Effects of shell thickness, impurity, and dielectric environment Journal of Applied Physics. ,vol. 114, pp. 023510- ,(2013) , 10.1063/1.4813094
M.R.K. Vahdani, The effect of the electronic intersubband transitions of quantum dots on the linear and nonlinear optical properties of dot-matrix system Superlattices and Microstructures. ,vol. 76, pp. 326- 338 ,(2014) , 10.1016/J.SPMI.2014.09.023