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Exciton Dynamics in Lead Halide Perovskite Nanocrystals

Part of the Springer Theses Book Series

DOI: 10.1007/978-3-030-70940-2

ISBN: 978-3-030-70939-6

Publisher: Springer International Publishing - Springer Journals

May 19, 2021

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Chapter 1Introduction

Bohn, Bernhard Johann

Pages: 1 –4

[The successful implementation of lead halide perovskites in a solar cell initiated the renaissance of this material type in 2009. This concise introductory chapter highlights some of the research milestones since then and explains the role of nanocrystals as well as excitons in this context....
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Chapter 2Fundamentals

Bohn, Bernhard Johann

Pages: 5 –65

[This chapter introduces the fundamental concepts regarding semiconductors and highlights the role of excitons within this material class. First, the main focus will be on optical absorption in general and the effect of quantum confinement, based on which spectral broadening and the influence of...
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Chapter 3Materials and Methods

Bohn, Bernhard Johann

Pages: 67 –96

[Having laid the ground with fundamental explanations concerning the experiments conducted in the course of this thesis, the following chapter serves the purpose of introducing the respective employed materials and methods. Firstly, a typical perovskite NC synthesis is described, followed by an...
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Chapter 4Recombination

Bohn, Bernhard Johann

Pages: 97 –119

[The following chapter contains those results of the research conducted for this thesis that may be subsumed under the term recombination. The corresponding interband relaxation of e-h pairs and excitons in particular was studied for the case of quantum-confined...
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Chapter 5Dephasing

Bohn, Bernhard Johann

Pages: 121 –137

[In recent years, LHPs have experienced a boom in research activity. However, some of their fundamental properties remain largely unexplored. For example, studies so far rarely distinguish between homogeneous and inhomogeneous transition broadening. This may be of particular interest for NCs, as...
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Chapter 6Diffusion

Bohn, Bernhard Johann

Pages: 139 –148

[In the preceding chapters, the recombination dynamics and the dephasing behavior of excitons in LHP NCs have been studied extensively. Therein, the generation of excitons was driven by external light sources and the excitons stayed within the LHPs. For the most part, however, conventional...
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Chapter 7Conclusions and Outlook

Bohn, Bernhard Johann

Pages: 149 –152

[All in all, the motivation of this thesis was to study exciton dynamics within lead halide perovskite (LHP) nanocrystals (NCs). In particular, three processes have been investigated: recombination, dephasing, and diffusion. Here, in this final chapter, they are addressed individually while...

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