STUDY OF STRONG CONFINEMENT OF CADMIUM SELENIDE QUANTUM DOTS IN FLUORINE-PHOSPHATE GLASSES
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For citation: Lipatova Zh.O., Kolobkova E.V. Study of strong confinement of cadmium selenide quantum dots in fluorine-phosphate glasses. Scientific and Technical Journal of Information Technologies, Mechanics and Optics, 2016, vol. 16, no. 4, pp. 745–748. doi: 10.17586/2226-1494-2016-16-4-745-748
Fluorine-phosphate glasses doped with CdSe quantum dots were studied. As a result of glasses secondary heat-treatment, quantum dots were synthesized with sizes equal to 1.2-4.5 nm. Strong confinement was studied in two energy transitions (excited states of quantum dots) on photoluminescence excitation spectra. Experimental dependencies for the first and second energy transition on the nanoparticles size enable to conclude that no interaction occurs with fluorine-phosphate glass matrix and quantum dots.
Acknowledgements. The research was funded by the Russian Science Foundation (Agreement №14-23-00136)
1. Beard M.C., Turner G.M., Schmuttenmaer C.A. Size-dependent photoconductivity in CdSe nanoparticles as measured by time-resolved terahertz spectroscopy. Nano Letters, 2002, vol. 2, no. 9, pp. 983–987. doi: 10.1021/nl0256210
2. Brus L. Zero-dimensional “excitons” in semiconductor clusters. IEEE Journal of Quantum Electronics, 1986, vol. 22, no. 9, pp. 1909–1914. doi: 10.1109/JQE.1986.1073184
3. Remitz K.E., Neuroth N.E., Speit. B. Semiconductor doped glass as a nonlinear material. Materials Science and Engineering B, 1991, vol. 9, no. 4, pp. 413–416. doi: 10.1016/0921-5107(91)90063-2
4. Morgan R.A., Park S.H., Koch S.W., Peyghambarian N. Experimental studies of the non-linear optical properties of cadmium selenide quantum-confined microcrystallites. Semiconductor Science and Technology, 1990, vol. 5, no. 6, pp. 544–548. doi: 10.1088/0268-1242/5/6/014
5. Stucky G.D., Mac-Dougall J.E. Quantum confinement and host/guest chemistry: probing a new dimension. Science, 1990, vol. 247, no. 4943, pp. 669–678.
6. Moller K., Eddy M.M., Stucky G.D., Herron N., Bein T. Stabilization of cadmium selenide molecular clusters in zeolite Y:EXAFS and x-ray diffraction studies. Journal of American Chemical Society, 1989, vol. 111, no. 7, pp. 2564–2571.
7. Herron N., Wang Y., Eddy M.M., Stucky G.D., Cox D.E., Moller K., Bein T. Structure and optical properties of cadmium sulfide superclusters in zeolite hosts. Journal of American Chemical Society, 1989, vol. 111, no. 2, pp. 530–540.
8. Norris D.J., Bawendi M.G. Measurement and assignment of the size-dependent optical spectrum in CdSe quantum dots. Physical Review B - Condensed Matter and Materials Physics, 1996, vol. 53, no. 24, pp. 16338–16346.
9. Xu K., Liu C., Chung W.J., Heo J. Optical properties of CdSe quantum dots in silicate glasses. Journal of Non-Crystalline Solids, 2010, vol. 356, no. 44–49, pp. 2299–2301. doi: 10.1016/j.jnoncrysol.2010.05.097
10. Chahboun A., Rolo A.G., Filonovich S.A., Gomes M.J.M. Factors influencing the passivation of CdS quantum dots embedded in silica glass. Solar Energy Materials and Solar Cells, 2006, vol. 90, no. 10, pp. 1413–1419. doi: 10.1016/j.solmat.2005.10.006
11. Lipatova Z.O., Kolobkova E.V., Aseev V.A. Kinetics and luminescence of cadmium sulfide quantum dots in fluorine-phosphate glasses. Optics and Spectroscopy, 2015, vol. 119, no. 2, pp. 229–233. doi: 10.1134/S0030400X15080159
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