Zobrazeno 1 - 10
of 142
pro vyhledávání: '"Al. L. Efros"'
Publikováno v:
Journal of Electronic Materials. 47:4338-4344
We present theoretical aspects of the exchange interaction between the ground optically-forbidden “dark” exciton state and surface dangling bonds in colloidal CdSe spherical nanocrystals and nanoplatelets. The influence of the dangling bond spins
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79b89627c320b5ccb4aa8fb6cb162661
https://doi.org/10.1007/s11664-018-6269-7
https://doi.org/10.1007/s11664-018-6269-7
Publikováno v:
Semiconductors. 52:572-574
We show theoretically that spins of dangling bonds (DBSs) at the surface of colloidal nanostructures can be responsible for the dark exciton radiative recombination governing low temperature photoluminecence. The DBS-assisted dark exciton recombinati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60285615ae1ed212175f87c8b7a6a37c
https://doi.org/10.1134/s1063782618050263
https://doi.org/10.1134/s1063782618050263
Autor:
Anna V. Rodina, Al. L. Efros
Publikováno v:
Journal of Experimental and Theoretical Physics. 122:554-566
We review the effects caused by a large difference in the dielectric constants of a semiconductor and its surrounding in colloidal semiconductor nanostructures (NSs) with various shapes, e.g., nanocrystals, nanorods, and nanoplatelets. The difference
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aea3acceb9e9b04a2ab3bd47439ca764
https://doi.org/10.1134/s1063776116030183
https://doi.org/10.1134/s1063776116030183
Autor:
Mickael D. Tessier, Benoit Mahler, Al. L. Efros, Ricardo P. S. M. Lobo, Benoit Dubertret, Sandrine Ithurria
Publikováno v:
Nature Materials. 10:936-941
The syntheses of strongly anisotropic nanocrystals with one dimension much smaller than the two others, such as nanoplatelets, are still greatly underdeveloped. Here, we demonstrate the formation of atomically flat quasi-two-dimensional colloidal CdS
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::64f673914a34edb3f931361c37dcad1b
https://doi.org/10.1038/nmat3145
https://doi.org/10.1038/nmat3145
Autor:
Dmitri R. Yakovlev, Dirk Reuter, S. Spatzek, Manfred Bayer, Andreas D. Wieck, Al. L. Efros, I. A. Yugova, Alex Greilich
Publikováno v:
physica status solidi c. 6:428-431
We show a possible way to the realization of a robust macroscopical quantum bit on the basis of an inhomogeneous ensemble of electron spins. In our case, electrons are confined in a self-assembled (In,Ga)As/GaAs quantum dots which are excited by a pe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6bf6b8b1459fd8e542e9748e56e9553
https://doi.org/10.1002/pssc.200880362
https://doi.org/10.1002/pssc.200880362
Publikováno v:
Nano Letters. 8:2878-2882
We propose a framework for describing the impurity doping of semiconductor colloidal nanocrystals. The model is applicable when diffusion of impurities through the nanocrystal is sufficiently small that it can be neglected. In this regime, the incorp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::965b140ff8d597965bca0bcbe30a2ccd
https://doi.org/10.1021/nl8016169
https://doi.org/10.1021/nl8016169
Autor:
Alex Greilich, Andreas D. Wieck, Manfred Bayer, Dmitri R. Yakovlev, Dirk Reuter, I. A. Yugova, Andrew Shabaev, Al. L. Efros
Publikováno v:
Science. 317:1896-1899
The hyperfine interaction of an electron with the nuclei is considered as the primary obstacle to coherent control of the electron spin in semiconductor quantum dots. We show, however, that the nuclei in singly charged quantum dots act constructively
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::45f74e2d0de8ec8a703b5c21233461c7
https://doi.org/10.1126/science.1146850
https://doi.org/10.1126/science.1146850
Publikováno v:
Physical Review B. 92
Using first principles calculations we describe the energy band structure of bulk ${\mathrm{CuInS}}_{2}$. The energy band parameters for the multiband effective mass approximation that describes the band edges of this semiconductor are obtained by fi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::763d9d741d833c866cd23978a64bf4ef
https://doi.org/10.1103/physrevb.92.035431
https://doi.org/10.1103/physrevb.92.035431
Autor:
Alex Greilich, V. Stavarache, Dirk Reuter, E. A. Zhukov, Manfred Bayer, I. A. Yugova, Andreas D. Wieck, Ruth Oulton, Al. L. Efros, Dmitri R. Yakovlev, Andrew Shabaev
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures. 35:272-277
The generation of electron spin coherence has been studied in n-modulation-doped (In,Ga)As/GaAs self-assembled quantum dots (QDs) which contain on average a single electron per dot. The doping has been confirmed by pump–probe Faraday rotation exper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a4ec7e213abe7603f34ec9aca34e7b6
https://doi.org/10.1016/j.physe.2006.08.028
https://doi.org/10.1016/j.physe.2006.08.028
Publikováno v:
Nano Letters. 6:2856-2863
We have theoretically shown that efficient generation of multi-electron−hole pairs by a single photon observed recently in semiconductor nanocrystals1-4 is caused by breaking the single electron approximation for carriers with kinetic energy above
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bac1998a4ce186c950bbcce73293f5dc
https://doi.org/10.1021/nl062059v
https://doi.org/10.1021/nl062059v