Local and average structural evolution of halide perovskites upon compression
Abstract/Contents
- Abstract
- Halide perovskites have emerged over the past decade as promising materials for photovoltaic solar cells. Pressure can be a powerful parameter for tuning the structures of these materials which in turn can dramatically influence their optoelectronic properties; however, previous research has only looked at the average structural evolution of various halide perovskites upon compression. In this dissertation, I describe our work studying the local structural evolution of halide perovskites upon compression using X-ray total scattering and pair distribution function analysis. First, I explore the double halide perovskite Cs2AgBiBr6. On average, this material has a cubic crystal structure, but analysis of the pair distribution function reveals local Br distortion and Cs off-centering, which are enhanced upon compression. Second, I look at the local and average structural evolution of 3-D halide perovskites, including our use of reverse Monte Carlo simulations to gain insight into the complex structural evolution of CsPbBr3. These studies highlight the importance of considering both the local and average behavior to build a more accurate understanding of halide perovskite structures, a key building block toward designing new materials with improved performance.
Description
| Type of resource | text |
|---|---|
| Form | electronic resource; remote; computer; online resource |
| Extent | 1 online resource. |
| Place | California |
| Place | [Stanford, California] |
| Publisher | [Stanford University] |
| Copyright date | 2021; ©2021 |
| Publication date | 2021; 2021 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | Girdzis, Samuel Peter Paiewonsky |
|---|---|
| Degree supervisor | Mao, Wendy (Wendy Li-wen) |
| Degree supervisor | Reis, David A, 1970- |
| Thesis advisor | Mao, Wendy (Wendy Li-wen) |
| Thesis advisor | Reis, David A, 1970- |
| Thesis advisor | Dionne, Jennifer Anne |
| Degree committee member | Dionne, Jennifer Anne |
| Associated with | Stanford University, Department of Applied Physics |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | Samuel Girdzis. |
|---|---|
| Note | Submitted to the Department of Applied Physics. |
| Thesis | Thesis Ph.D. Stanford University 2021. |
| Location | https://purl.stanford.edu/mz521bt9619 |
Access conditions
- Copyright
- © 2021 by Samuel Peter Paiewonsky Girdzis
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