 |
HAL | Université de Versailles Saint-Quentin-en-Yvelines |
Journal articles
Förster resonance energy transfer between individual semiconductor nanocrystals and an InP film
Abstract : The modification of the radiative decay of a single emitter in close vicinity to a dielec-tric interface is investigated by studying the photoluminescence (PL) decay dynamics of col-loidal semiconductor nanocrystals (NCs) deposited on semiconductor surfaces. The PL decay lifetimes of single CdSe/CdS NCs spin-coated on InP surfaces passivated with thin oxide layers are measured. Electrochemical passivation of the InP surfaces with oxide layers of different thicknesses enables to study the influence of the distance between the semiconductor surface and the NC on the lifetime. A shortening of the PL decay lifetimes of the NCs with respect to their lifetimes on glass strongly suggests the opening of recombination channels for the photogenerated exciton, which we attribute to energy transfer between the NC and the semiconductor. We also experimentally show the influence of the orientation of the NC with respect to the semiconductor surface on the coupling.
https://hal.uvsq.fr/hal-01491337
Contributor : Xavier Quelin Connect in order to contact the contributor
Submitted on : Thursday, March 16, 2017 - 4:24:43 PM
Last modification on : Thursday, July 1, 2021 - 4:45:15 PM
Long-term archiving on: : Saturday, June 17, 2017 - 2:41:53 PM
Contributor : Xavier Quelin Connect in order to contact the contributor
Submitted on : Thursday, March 16, 2017 - 4:24:43 PM
Last modification on : Thursday, July 1, 2021 - 4:45:15 PM
Long-term archiving on: : Saturday, June 17, 2017 - 2:41:53 PM
File
JNP_10_046014_2016.pdf
Publisher files allowed on an open archive