Magnetic circular polarization of photoluminescence of an inhomogeneous ensemble of colloidal nanocrystals
| العنوان: | Magnetic circular polarization of photoluminescence of an inhomogeneous ensemble of colloidal nanocrystals |
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| المؤلفون: | A. A. Golovatenko, Anna V. Rodina, O O Smirnova |
| المصدر: | Journal of Physics: Conference Series. 1697:012204 |
| بيانات النشر: | IOP Publishing, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Imagination, History, Thesaurus (information retrieval), Chemical substance, Photoluminescence, Materials science, business.industry, media_common.quotation_subject, Computer Science Applications, Education, Search engine, Nanocrystal, Optoelectronics, business, Science, technology and society, Circular polarization, media_common |
| الوصف: | In this paper, we theoretically analyze the recombination and spin dynamics of excitons in an inhomogeneous ensemble of colloidal nanocrystals, which consists of several subensembles with different lifetimes and degrees of circular polarization of exciton photoluminescence (DCP). Each subensemble is described within a three-level model of interacting exciton states, including two excited states and a ground state. Various ratios of parameters, leading to a nontrivial time-dependent DCP and a difference in the integral and equilibrium DCP characteristics, are considered. It is shown that the presence of subensembles with different polarizations and lifetimes results in nonmonotonic dependence and a change in the sign of the DCP in magnetic field and as a function of time can occur. The theoretical model was implemented to describe the time dependences of the DCP in ensembles of colloidal CdSe nanoplatelets synthesized in the air and argon atmosphere. |
| تدمد: | 1742-6596 1742-6588 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::bb029b7f038a479378adda42533e76b8 https://doi.org/10.1088/1742-6596/1697/1/012204 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........bb029b7f038a479378adda42533e76b8 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 17426596 17426588 |
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