Výsledky vyhledávání - "Galkowski, K"

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The impact of the halide cage on the electronic properties of fully inorganic caesium lead halide perovskites

Autor: Yang, Z., Surrente, A., Galkowski, K., Miyata, A., Portugall, O., Sutton, R. J., Haghighirad, A. A., Snaith, H. J., Maude, D. K., Plochocka, P., Nicholas, R. J.

Perovskite solar cells with record power conversion efficiency are fabricated by alloying both hybrid and fully inorganic compounds. While the basic electronic properties of the hybrid perovskites are now well understood, key electronic parameters fo

Externí odkaz: http://arxiv.org/abs/1706.04489

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Revealing large-scale homogeneity and trace impurity sensitivity of GaAs nanoscale membranes

Autor: Yang, Z., Surrente, A., Tutuncuoglu, G., Galkowski, K., Cazaban-Carraze, M., Amaduzzi, F., Leroux, P., Maude, D. K., Morral, A. Fontcuberta i, Plochocka, P.

III-V nanostructures have the potential to revolutionize optoelectronics and energy harvesting. For this to become a reality, critical issues such as reproducibility and sensitivity to defects should be resolved. By discussing the optical properties

Externí odkaz: http://arxiv.org/abs/1704.08477

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Spatially resolved studies of the phases and morphology of methylammonium and formamidinium lead tri-halide perovskites

Autor: Galkowski, K., Mitioglu, A., Surrente, A., Yang, Z., Maude, D. K., Kossacki, P., Eperon, G. E., Wang, J. T-W., Snaith, H. J., Plochocka, P., Nicholas, R. J.

Publikováno v: Nanoscale , 2017, 9 , 3222

The family of organic-inorganic tri-halide perovskites including MA (MethylAmmonium)PbI$_{3}$, MAPbI$_{3-x}$Cl$_{x}$, FA (FormAmidinium)PbI$_{3}$ and FAPbBr$_{3}$ are having a tremendous impact on the field of photovoltaic cells due to their ease of

Externí odkaz: http://arxiv.org/abs/1606.03234

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Onset of exciton-exciton annihilation in single layer black phosphorus

Autor: Surrente, A., Mitioglu, A. A., Galkowski, K., Klopotowski, L., Tabis, W., Vignolle, B., Maude, D. K., Plochocka, P.

Publikováno v: Phys. Rev. B 94, 075425 (2016)

The exciton dynamics in monolayer black phosphorus is investigated over a very wide range of photoexcited exciton densities using time resolved photoluminescence. At low excitation densities, the exciton dynamics is successfully described in terms of

Externí odkaz: http://arxiv.org/abs/1605.06998

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Magneto-excitons in large area CVD grown monolayer MoS$_{2}$ and MoSe$_{2}$ on sapphire

Autor: Mitioglu, A. A., Galkowski, K., Surrente, A., Klopotowski, L., Dumcenco, D., Kis, A., Maude, D. K., Plochocka, P.

Publikováno v: Phys. Rev. B 93, 165412 (2016)

Magneto transmission spectroscopy was employed to study the valley Zeeman effect in large-area monolayer MoS$_{2}$ and MoSe$_{2}$. The extracted values of the valley g-factors for both A- and B-exciton were found be similar with $g_v \simeq -4.5$. Th

Externí odkaz: http://arxiv.org/abs/1602.01220

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Excitons in atomically thin black phosphorus

Autor: Surrente, A., Mitioglu, A. A., Galkowski, K., Tabis, W., Maude, D. K., Plochocka, P.

Publikováno v: Phys. Rev. B 93, 121405 (2016)

Raman scattering and photoluminescence spectroscopy are used to investigate the optical properties of single layer black phosphorus obtained by mechanical exfoliation of bulk crystals under an argon atmosphere. The Raman spectroscopy, performed in si

Externí odkaz: http://arxiv.org/abs/1601.01110

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