KLENOVSKÝ, Petr, Petr STEINDL and Dominique GEFFROY. Excitonic structure and pumping power dependent emission blue-shift of type-II quantum dots. Scientific Reports. London: Nature Publishing Group, 2017, vol. 7, March, p. nestránkováno, 10 pp. ISSN 2045-2322. Available from: https://dx.doi.org/10.1038/srep45568. |
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@article{1376957, author = {Klenovský, Petr and Steindl, Petr and Geffroy, Dominique}, article_location = {London}, article_number = {March}, doi = {http://dx.doi.org/10.1038/srep45568}, keywords = {multi-particle states; configuration interaction; photoluminescence; quantum dots}, language = {eng}, issn = {2045-2322}, journal = {Scientific Reports}, title = {Excitonic structure and pumping power dependent emission blue-shift of type-II quantum dots}, url = {http://www.nature.com/articles/srep45568}, volume = {7}, year = {2017} }
TY - JOUR ID - 1376957 AU - Klenovský, Petr - Steindl, Petr - Geffroy, Dominique PY - 2017 TI - Excitonic structure and pumping power dependent emission blue-shift of type-II quantum dots JF - Scientific Reports VL - 7 IS - March SP - nestránkováno EP - nestránkováno PB - Nature Publishing Group SN - 20452322 KW - multi-particle states KW - configuration interaction KW - photoluminescence KW - quantum dots UR - http://www.nature.com/articles/srep45568 L2 - http://www.nature.com/articles/srep45568 N2 - In this work we study theoretically and experimentally the multi-particle structure of the so-called type-II quantum dots with spatially separated electrons and holes. Our calculations based on customarily developed full configuration interaction approach reveal that exciton complexes containing holes interacting with two or more electrons exhibit fairly large antibinding energies. This effect is found to be the hallmark of the type-II confinement. In addition, an approximate self-consistent solution of the multi-exciton problem allows us to explain two pronounced phenomena: the blue-shift of the emission with pumping and the large inhomogeneous spectral broadening, both of those eluding explanation so far. The results are confirmed by detailed intensity and polarization resolved photoluminescence measurements on a number of type-II samples. ER -
KLENOVSKÝ, Petr, Petr STEINDL and Dominique GEFFROY. Excitonic structure and pumping power dependent emission blue-shift of type-II quantum dots. \textit{Scientific Reports}. London: Nature Publishing Group, 2017, vol.~7, March, p.~nestránkováno, 10 pp. ISSN~2045-2322. Available from: https://dx.doi.org/10.1038/srep45568.
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