Optical properties and aging of PbS quantum dots embedded in a porous matrix

Aleksandr P Litvin, Peter S Parfenov, Elena V Ushakova, Anatoly V Fedorov, Mikhail V Artemyev, Anatoly V Prudnikau, Ivan D. Rukhlenko, Alexander V Baranov

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

2 Citations (Scopus)

Abstract

PbS quantum dots (QDs) with diameter of 2.9-7.4 nm were embedded into a porous matrix. The samples prepared by developed low-cost effortless method demonstrate linear dependencies of optical density and luminescence intensity on the QDs concentration and perfect homogeneity. Optical properties of quantum dots in the matrix were studied using absorption and steady-state and time-resolved photoluminescence spectroscopy. Luminescence lifetimes were found to be size-dependent and increase with decreasing of QDs size. The aging behavior of PbS QDs in a porous matrix was explored for a variety of QDs sizes. The energy transfer process in quasi-monodispersed PbS QDs ensemble was discovered.

Original languageEnglish
Title of host publicationNanophotonic Materials X
EditorsStefano Cabrini, Gilles Lérondel, Adam M. Schwartzberg, Taleb Mokari
PublisherSPIE
Number of pages7
Volume8807
ISBN (Print)9780819496577
DOIs
Publication statusPublished - 2013
EventNanophotonic Materials X 2013 - San Diego, United States of America
Duration: 28 Aug 201329 Aug 2013
http://spie.org/Publications/Proceedings/Volume/8807?SSO=1
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/8807.toc (Proceedings of SPIE)

Publication series

NameSPIE - International Society for Optical Engineering. Proceedings
PublisherS P I E - International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceNanophotonic Materials X 2013
CountryUnited States of America
CitySan Diego
Period28/08/1329/08/13
OtherProceedings Volume 8807,
Nanophotonic Materials X; 880701 (2013);
doi: 10.1117/12.2034132
Event: SPIE NanoScience + Engineering, 2013, San Diego, California, United States
Internet address

Keywords

  • Luminescence
  • Luminescence lifetimes
  • Near-infrared region
  • PbS
  • Porous matrix
  • Quantum dots

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