Вышедшие номера
Photoluminescence Properties of Thin-Film Nanohybrid Material Based on Quantum Dots and Gold Nanorods*
Переводная версия: 10.1134/S0030400X18110115
The Ministry of Education and Science of the Russian Federation, The Program of Attraction of the World Leading Scientists to Russian Institutions, 14.Y26.31.0011
MINECO (Ministerio de Economiá y Competitividad), Spain, State Program for the Promotion of Scientific and Technical Research of Excellence, Fis2016.80174-P
Goncharov S.A.1, Krivenkov V.A.1, Samokhvalov P.S.1, Nabiev I. 1,2, Rakovich Y.P. 1,3,4,5
1National Research Nuclear University MEPhI, Moscow, Russia
2Laboratoire de Recherche en Nanosciences, LRN-EA, Universite de Reims Champagne-Ardenne, Reims, France
3Donostia International Physics Center (DIPC), Donostia-San Sebastiain, Spain
4Centro de Fisica de Materiales (MPC, CSIC-UPV/EHU), Donostia--San Sebastian, Spain
5IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
Email: yury.rakovich@gmail.com
Поступила в редакцию: 6 июля 2018 г.
Выставление онлайн: 20 октября 2018 г.

Semiconductor quantum dots (QDs) have been demonstrated to be a promising material for developing innovative optoelectronic systems and lasers. The strong and weak coupling effects between localized plasmons in noble metal nanoparticles and excitons in QDs can modulate photoluminescence properties of the latter, scaling up their applications. In particular, these effects can strongly affect the photoluminescence (PL) lifetime of QDs, opening prospects for significantly increasing the quantum yield of the biexciton emission in single QD. Here, we provide а convincing proof of the formation of many-exciton states in hybrid material based on CdSe/ZnS/CdS/ZnS core/multishell QDs and gold nanorods (NRs) embedded in thin films of PMMA. The presence of NRs causes at least an order-of-magnitude decrease in the PL lifetimes of single QD. The obtained results have demonstrated the possibility of detecting biexciton states in QDs as the main component of emission of the hybrid QD-NR material. -18

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