Charge Injection, Charge Trapping and Charge Transfer in Quantum-Dot Solids

S.C. Boehme

Research output: PhD ThesisPhD Thesis - Research external, graduation external

Abstract

This study reports on fundamental processes in Quantum-Dot Solids, after light absorption. Transient Absorption and Time-resolved Photoluminescence spectrocopy reveal the dynamics of charge transfer and charge trapping processes. Typically, both occur on a picosecond time scale and compete with each other. We find that the efficiency of these processes depends on the Fermi level in the Quantum-Dot Solid. The latter can be controlled electrochemically, via charge injection into the Quantum-Dot Solid, using a potentiostat. The presented findings aid the rational design of opto-electronic devices based on Quantum Dots, such as solar cells or LEDs.
Original languageEnglish
QualificationPhD
Awarding Institution
  • TU Delft
Supervisors/Advisors
  • Siebbeles, Laurens D A, Supervisor, External person
  • Vanmaekelbergh, Daniël, Supervisor, External person
  • Houtepen, Arjan J., Co-supervisor, External person
Award date3 Mar 2015
Print ISBNs978-94-6108-921-2
Electronic ISBNs978-94-6108-921-2
DOIs
Publication statusPublished - 3 Mar 2015

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