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

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

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

Fingerprint

trapping
quantum dots
charge transfer
injection
electromagnetic absorption
optoelectronic devices
light emitting diodes
solar cells
photoluminescence

Cite this

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title = "Charge Injection, Charge Trapping and Charge Transfer in Quantum-Dot Solids",
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.",
author = "S.C. Boehme",
year = "2015",
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language = "English",
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school = "TU Delft",

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Charge Injection, Charge Trapping and Charge Transfer in Quantum-Dot Solids. / Boehme, S.C.

2015. 174 p.

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

TY - THES

T1 - Charge Injection, Charge Trapping and Charge Transfer in Quantum-Dot Solids

AU - Boehme, S.C.

PY - 2015/3/3

Y1 - 2015/3/3

N2 - 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.

AB - 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.

U2 - 10.4233/uuid:387ff649-1aa3-44a5-a22b-0e33fe39446b

DO - 10.4233/uuid:387ff649-1aa3-44a5-a22b-0e33fe39446b

M3 - PhD Thesis - Research external, graduation external

SN - 978-94-6108-921-2

ER -