NEAR INFRARED COLLOIDAL PBSE/PBS CORE/WING NANOPLATELETS ОBTAINED BY A CATION EXCHANGE REACTION

1 Cherevkov S.A.
Co-authors:
1 Litvin A.P. 1 Kormilina T.K. 1 Dubavik A.U. 1 Sokolova A.V. 1 Fedorov A.V. 1 Baranov A.V.
Institution:
1 ITMO University, Center of Information Optical Technologies, Saint Petersburg, Russia, s.cherevkov@itmo.ru
Conference:
11th International Conference on Nanomaterials - Research & Application, Hotel Voronez I, Brno, Czech Republic, EU, October 16th - 18th 2019
Proceedings:
Proceedings 11th International Conference on Nanomaterials - Research & Application
Pages:
616-620
ISBN:
978-80-87294-95-6
ISSN:
2694-930X
Published:
1st April 2020
Proceedings of the conference have been sent to Web of Science and Scopus for evaluation and potential indexing.
Metrics:
22 views / 21 downloads
Abstract

Two-dimensional colloidal nanocrystals have recently revealed a great potential as optical gain media due to their remarkable optical properties. Besides controlling the size and shape of semiconductor nanocrystals the variation in the chemical composition is another way to control the optical properties of nanomaterials. It is of especial interest to use here the cationic substitution reaction instead of direct synthesis from a Pb precursors, since we may start from cadmium chalcogenide nanocrystals of well controlled size, shape and crystalline structure. So, the cation exchange reaction of cadmium by lead in well-studied colloidal CdSe and core/wing CdSe/CdS nanoplatelets has been examined by absorption and photoluminescence spectroscopy.

Keywords: nanoplatelets, core/wing, PbSe, near IR, synthesis
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