Influence of the surface ligands on the optical and electrical properties of PbS QD solids

Mariya A. Zvaigzne, Alexey E. Aleksandrov, Yaroslav Goltyapin, Alexey R. Tameev, Alexander A. Chistyakov

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

Abstract

We studied the influence of the ligands on the optical properties of PbS QD solids using the photoluminescence spectra and the kinetics of photoluminescence decay. As the ligand molecule length decreases, the photoluminescence decay becomes faster, which in a good agreement with the theory of the hopping mechanism of charge transfer in QD solids. We also fabricate photovoltaic structures (ITO/PEDOT:PSS/PbS/ZnO/Al) based on PbS QD solids and investigate the influence of various organic ligand molecules on its photovoltaic characteristics. The maximum efficiency was observed in samples with a ligand of intermediate length.

Original languageEnglish
Title of host publicationNanophotonics VII
EditorsDavid L. Andrews, Andreas Ostendorf, Angus J. Bain, Jean-Michel Nunzi
PublisherSPIE
ISBN (Electronic)9781510618701
DOIs
Publication statusPublished - 1 Jan 2018
Externally publishedYes
EventNanophotonics VII 2018 - Strasbourg, France
Duration: 22 Apr 201826 Apr 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10672
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceNanophotonics VII 2018
Country/TerritoryFrance
CityStrasbourg
Period22/04/1826/04/18

Keywords

  • charge transfer
  • energy transfer
  • ligands
  • photovoltaic
  • quantum dots

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