Engineering devices for efficient and stable photoelectrochemical water splitting
Abstract/Contents
- Abstract
- Solar water splitting using photoelectrochemical cells (PEC's) is a promising pathway toward clean and sustainable storage of renewable energy. However, developing a PEC device that is efficient, durable, and also scalable has been a huge challenge so far. This dissertation addresses these challenges by developing photocathodes based on inexpensive absorber materials such as germanium and silicon. In particular, efficient silicon heterojunction solar cells are studied in order to stabilize them under corrosive hydrogen evolution environments while maintaining their excellent photovoltaic performance using TiO2 protection layers deposited using atomic layer deposition. High activity oxygen evolution electrocatalysts are also fabricated on porous substrate materials in order to minimize the overpotential required. Finally, we combine the photocathode and the anode in a novel integrated solar water splitting architecture, and demonstrate a solar-to-hydrogen (STH) efficiency in excess of 10%, a record high STH efficiency for an integrated silicon photosynthesis device, and stable operation for > 120 hours.
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 | 2019; ©2019 |
| Publication date | 2019; 2019 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | Tan, Chor Seng |
|---|---|
| Degree supervisor | McIntyre, Paul Cameron |
| Thesis advisor | McIntyre, Paul Cameron |
| Thesis advisor | Chidsey, Christopher E. D. (Christopher Elisha Dunn) |
| Thesis advisor | Triplett, Baylor |
| Degree committee member | Chidsey, Christopher E. D. (Christopher Elisha Dunn) |
| Degree committee member | Triplett, Baylor |
| Associated with | Stanford University, Department of Materials Science and Engineering. |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | Chor Seng Tan. |
|---|---|
| Note | Submitted to the Department of Materials Science and Engineering. |
| Thesis | Thesis Ph.D. Stanford University 2019. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2019 by Chor Seng Tan
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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