ITMO University Saint Petersburg National Research University of Information Technologies, Mechanics and Optics

Elena V. Ushakova

Elena V. Ushakova

Ph.D.

Position:

Associate professor

Education

Ph.D.

ITMO University
Thesis:
Features of the charge carrier dynamics in quantum dots of cadmium and lead chalcogenides

Experiences

Feb. 2014 - present: Associate professor at the Chair of Optical Physics and Modern Natural Science, ITMO University

Dec 2016: Visiting Academic at NEST group, University of Exeter, UK

2012 - 2014: Postdoctoral researcher at the Chair of Optical Physics and Modern Natural Science, ITMO University

2008 - 2012: Engineer at the Chair of Optical Physics and Modern Natural Science, ITMO University

2007 - 2008: Engineer at the Chair of Laser Technologies and Biomedicine Optics, ITMO University

Research interests

Self-assembly and optical properties of semiconductor nanocrystals and their hybrid complexes with other nanomaterials

The main goal of novel Materials science is the design of materials with desired and controlled properties. This possibility is offered by nanostructured materials based on ensembles of nanoscale structural elements. In these materials, colloidal quantum dots (CQDs) may act as structural elements. Examples of nanostructured materials are 2D and 3D ordered CQDs ensembles called supercrystals (SCs). These structures possess unique properties depending on CQD properties and/or their mutual arrangement in the SCs. Thus, by altering the original structural elements and SC morphology, nanostructured materials with purposefully varied properties suitable for specific further utilization can be obtained.

We investigate the spatial arrangement and the influence of the CQD ordering on their optical properties and charge carrier dynamics. We have developed a method of chemical treatment of the QD surface to achieve the interparticle distances needed to further utilization of 2D CQD SCs in photonic elements. It has been found that 3D CQD SC systems possess optical activity, such as birefringence. The origin of these properties is still under investigation.

  1. Sergey V. Makarov, Valentin Milichko, Elena V. Ushakova, Mikhail Omelyanovich, Andrea Cerdan Pasaran, Ross Haroldson, Balasubramaniam Balachandran, Honglei Wang, Walter Hu, Yuri S. Kivshar, Anvar A. Zakhidov. Multifold Emission Enhancement in Nanoimprinted Hybrid Perovskite Metasurfaces. ACS Photonics, 4(4) 728-735 (2017)
  2. Aleksandr P. Litvin, Anton A. Babaev, Peter S. Parfenov, Elena V. Ushakova, Mikhail A. Baranov, Olga V. Andreeva, Kevin Berwick, Anatoly V. Fedorov, Alexander V. Baranov. Photoluminescence of Lead Sulfide Quantum Dots of Different Sizes in a Nanoporous Silicate Glass Matrix. The Journal of Physical Chemistry C, 121(15) 8645-8652 (2017)
  3. Aleksandr P. Litvin, Peter S. Parfenov, Elena V. Ushakova, Ana L. Simões Gamboa, Anatoly V. Fedorov, Alexander V. Baranov. Size and Temperature Dependencies of the Low-Energy Electronic Structure of PbS Quantum Dots. The Journal of Physical Chemistry C, 118(35) 20721-20726 (2014)
  4. Aleksandr P. Litvin, Peter S. Parfenov, Elena V. Ushakova, Tatiana A. Vorsina, Ana L. Simões Gamboa, Anatoly V. Fedorov, Alexander V. Baranov. FRET-Activated Delayed Fluorescence in Densely Packed PbS Quantum-Dot Ensembles. The Journal of Physical Chemistry C, 119(29) 17016-17022 (2015)
  5. D. A. Volgina, A. V. Baranov, E. V. Ushakova. Quantum dot based superstructures: PL decay analysis. Journal of Physics: Conference Series, 741 012021 (2016)
  6. P. S. Parfenov, A. P. Litvin, E. V. Ushakova, E. P. Kolesova, A. V. Fedorov, A. V. Baranov. Simulation analysis of atomic-force images of nanocrystal structures. Journal of Optical Technology, 83(3) 143 (2016)
  7. Sergei A. Cherevkov, Alexander V. Baranov, Elena V. Ushakova, Alexander P. Litvin, Anatoly V. Fedorov, Anatol V. Prudnikau, Mikhail V. Artemyev. Raman analysis of chemical substitution of Cd atoms by Hg in CdSe quantum dots and rods. Optical Engineering, 55(1) 017104 (2016)
  8. Elena V. Ushakova, Aleksandr P. Litvin, Peter S. Parfenov, Anatoly V. Fedorov, Sergei A. Cherevkov, Alexander V. Baranov. Nonradiative resonant energy transfer between PbS QDs in porous matrix. Proceedings of SPIE, 8807 88070W (2013)
  9. E.V. Ushakova, A.P. Litvin, P.S. Parfenov, S.A. Cherevkov, A.V. Fedorov, A.V. Baranov, V.V. Golubkov. Self-assembled PbS QDs of different size. 2014 International Conference Laser Optics, LO2014 (2014)
  10. Elena V. Ushakova, Valery V. Golubkov, Aleksandr P. Litvin, Peter S. Parfenov, Sergei A. Cherevkov, Anatoly V. Fedorov, Alexander V. Baranov. Superstructures from lead sulfide quantum dots. MRS Proceedings, 1784 (2015)
  11. A. V. Baranov, A. O. Orlova, V. G. Maslov, Yu. A. Toporova, E. V. Ushakova, A. V. Fedorov, S. A. Cherevkov, M. V. Artemyev, T. S. Perova, K. Berwick. Dissociative CdSe/ZnS quantum dot-molecule complex for luminescent sensing of metal ions in aqueous solutions. Journal of Applied Physics, 108(7) 074306 (2010)
  12. A. V. Baranov, K. V. Bogdanov, E. V. Ushakova, S. A. Cherevkov, A. V. Fedorov, S. Tscharntke. Comparative analysis of Raman spectra of PbS macro- and nanocrystals. Optics and Spectroscopy, 109(2) 268-271 (2010)
  13. Elena V. Ushakova, Sergei A. Cherevkov, Aleksandr P. Litvin, Peter S. Parfenov, Dominika-Olga A. Volgina, Igor A. Kasatkin, Anatoly V. Fedorov, Alexander V. Baranov. Ligand-Dependent Morphology and Optical Properties of Lead Sulfide Quantum Dot Superlattices. The Journal of Physical Chemistry C, 120(43) 25061-25067 (2016)
  14. P. S. Parfenov, A. P. Litvin, E. V. Ushakova, A. V. Fedorov, A. V. Baranov. Obtaining of images of ordered and disordered nanocrystal structures by atomic force microscopy. Optics and Spectroscopy, 122(1) 93-95 (2017)
  15. E. V. Ushakova, T. K. Kormilina, M. A. Burkova, S. A. Cherevkov, V. V. Zakharov, V. K. Turkov, A. V. Fedorov, A. V. Baranov. The influence of ligand type on self-organization and optical properties of cadmium selenide quantum dots. Optics and Spectroscopy, 122(1) 25-29 (2017)
  16. Valentin A. Milichko, Sergey V. Makarov, Alexey V. Yulin, Alexandr V. Vinogradov, Andrei A. Krasilin, Elena Ushakova, Vladimir P. Dzyuba, Evamarie Hey-Hawkins, Evgeny A. Pidko, Pavel A. Belov. van der Waals Metal-Organic Framework as an Excitonic Material for Advanced Photonics. Advanced Materials, 29 1606034 (2017)
  17. S.A. Cherevkov , A.V. Baranov , E.V. Ushakova , A.P. Litvin, A.V. Fedorov, A.V. Prudnikau, M.V. Artemyev. Raman analysis of chemical substitution of Cd atoms by Hg in CdSe quantum dots and rods. Optical Engineering, 55(1) 017104 (2016)
  18. E.V. Ushakova, S.A. Cherevkov, A.P. Litvin, P.S. Parfenov, V.V. Zakharov, A. Dubavik, A.V. Fedorov, A.V. Baranov. Оptical properties of ordered superstructures formed from cadmium and lead chalcogenide nanocrystals. Optics Express, 24(2) A58-A64 (2016)
  19. E.V. Ushakova, V.V. Golubkov, A.P. Litvin, P.S. Parfenov, S.A. Cherevkov, A.V. Fedorov , A.V. Baranov. X-ray structural analysis of two-dimensional assembling lead sulfide nanocrystals of different sizes . Optical Engineering, 55(8) 081302 (2016)
  20. Aleksandr P. Litvin, Peter S. Parfenov, Elena V. Ushakova, Anatoly V. Fedorov, Mikhail V. Artemyev, Anatol V. Prudnikau, Valery V. Golubkov, Alexander V. Baranov. PbS Quantum Dots in a Porous Matrix: Optical Characterization. The Journal of Physical Chemistry C, 117(23) 12318-12324 (2013)
  21. P. S. Parfenov, A. P. Litvin, E. V. Ushakova, A. V. Fedorov, A. V. Baranov, K. Berwick. Note: Near infrared spectral and transient measurements of PbS quantum dots luminescence. Review of Scientific Instruments, 84(11) 116104 (2013)
  22. Aleksandr P. Litvin, Peter S. Parfenov, Elena V. Ushakova, Anatoly V. Fedorov, Mikhail V. Artemyev, Anatoly V. Prudnikau, Ivan D. Rukhlenko, Alexander V. Baranov. Optical properties and aging of PbS quantum dots embedded in a porous matrix. Proceedings of SPIE, 8807 88070T (2013)
  23. Е.В. Ушакова, В.В. Голубков, А.П. Литвин, П.С. Парфенов, А.В. Баранов. Самоорганизация квантовых точек сульфида свинца разного размера. Научно-технический вестник информационных технологий, механики и оптики, 88(6) 127-132 (2013)
  24. Alexander P. Litvin, Peter S. Parfenov, Elena V. Ushakova, Anatoly V. Fedorov, Mikhail V. Artemyev, Anatoly V. Prudnikau, Sergey A. Cherevkov, Ivan D. Rukhlenko, Alexander V. Baranov. Size-dependent room-temperature luminescence decay from PbS quantum dots. Proceedings of SPIE, 8564 85641Z (2012)
  25. Elena V. Ushakova, Aleksandr P. Litvin, Peter S. Parfenov, Anatoly V. Fedorov, Mikhail Artemyev, Anatoly V. Prudnikau, Ivan D. Rukhlenko, Alexander V. Baranov. Anomalous Size-Dependent Decay of Low-Energy Luminescence from PbS Quantum Dots in Colloidal Solution. ACS Nano, 6(10) 8913-8921 (2012)
  26. P. S. Parfenov, A. P. Litvin, A. V. Baranov, E. V. Ushakova, A. V. Fedorov, A. V. Prudnikov, M. V. Artemyev. Measurement of the luminescence decay times of PbS quantum dots in the near-IR spectral range. Optics and Spectroscopy, 112(6) 868-873 (2012)
  27. А.П. Литвин, П.С. Парфенов, Е.В. Ушакова, А.В. Баранов. Исследование кинетики люминесценции квантовых точек сульфида свинца. Научно-технический вестник информационных технологий, механики и оптики, 81(5) 32-38 (2012)
  28. P. S. Parfenov, A. P. Litvin, A. V. Baranov, A. V. Veniaminov, E. V. Ushakova. Calibration of the spectral sensitivity of instruments for the near infrared region. Journal of Applied Spectroscopy, 78(3) 433-439 (2011)
  29. A. V. Baranov, K. V. Bogdanov, E. V. Ushakova, S. A. Cherevkov, A. V. Fedorov, S. Tscharntke. Comparative analysis of Raman spectra of PbS macro- and nanocrystals. Optics and Spectroscopy, 109(2) 268-271 (2010)
  30. A. O. Orlova, V. G. Maslov, Yu. A. Toporova, E. V. Ushakova, A. V. Fedorov, M. V. Artem’ev, A. V. Baranov. A film luminescent nanosensor based on a quantum dot—organic molecule complex. Nanotechnologies in Russia, 5(1) 2-49 (2010)
  31. A. V. Baranov, A. O. Orlova, V. G. Maslov, Yu. A. Toporova, E. V. Ushakova, A. V. Fedorov, S. A. Cherevkov, M. V. Artemyev, T. S. Perova, K. Berwick. Dissociative CdSe/ZnS quantum dot-molecule complex for luminescent sensing of metal ions in aqueous solutions. Journal of Applied Physics, 108(7) 074306 (2010)
  32. Е.В. Ушакова, А.О. Орлова, А.В. Баранов. Исследование времени жизни люминесценции CdSe/ZnS квантовых точек в случае образования и диссоциации комплексов КТ/органическая молекула в тонких полимерных пленках. Научно-технический вестник СПбГУ ИТМО, 64(6) 20 (2009)
  33. Alexander V. Baranov, Elena V. Ushakova, Valery V. Golubkov, Aleksandr P. Litvin, Peter S. Parfenov, Anatoly V. Fedorov, Kevin Berwick. Self-organization of colloidal PbS quantum dots into highly-ordered superlattices. Langmuir, 31(1) 506–513 (2015)
  34. S. A. Cherevkov, Alexander V. Baranov , Elena V. Ushakova, Aleksandr P. Litvin, Anatoly V. Fedorov, A. V. Prudnikau, M. V. Artemyev . Analysis of the structural and chemical features of CdHgSe nanocrystals via resonance Raman spectroscopy. Proceedings of SPIE, 9126 912623 (2014)
  35. Aleksandr P. Litvin, Elena V. Ushakova, Peter S. Parfenov, Sergey A. Cherevkov, Anatoly V. Fedorov, Alexander V. Baranov. Forster resonant energy transfer in lead sulfide QD assemblies. Proceedings of SPIE, 9126 912626 (2014)
  36. Aleksandr P. Litvin, Elena V. Ushakova, Peter S. Parfenov , Anatoly V. Fedorov, Alexander V. Baranov . FRET between close-packed quasi-monodispersed PbS QDs in a porous matrix. The Journal of Physical Chemistry C, 118(12) 6531-6535 (2014)
  37. P.S. Parfenov , A.P. Litvin , E.V. Ushakova , A.V. Fedorov , A.V. Baranov. Luminescence and morphology study of PbS quantum dots in a porous matrix. Proceedings - 2014 International Conference Laser Optics, LO 2014 (2014)
  38. P. S. Parfenov, A. P. Litvin, E. V. Ushakova, A. V. Veniaminov, A. V. Fedorov, A. V. Baranov. A porous matrix for studying the optical properties of systems of close-packed quantum dots. Journal of Optical Technology, 81(8) 449-453 (2014)
  39. Elena V. Ushakova, Valery V. Golubkov , Aleksandr P. Litvin , Peter S. Parfenov , Sergei A. Cherevkov, Anatoly V. Fedorov , Alexander V. Baranov. Self-organization of lead sulfide quantum dots of different sizes. Proceedings of SPIE, 9126 912625 (2014)