Photoelectrochemical microscopy studies of transition metal dichalcogenides nanoflakes: addressing open questions of structure-function relationships

Transition metal dichalcogenides (TMDs) are exciting materials for applications in solar energy conversion. However, to advance technologies that leverage these materials, a strong understanding of fundamental photoelectrochemistry and related processes is necessary. Photoelectrochemical microscopy methods are well poised in this aspect. Methods like scanning photoelectrochemical microscopy allow for the excitation of small, localized region of a material with a focused laser and the subsequent measurement of the photocurrent. The measured photocurrent can be related to the position of the laser and the physical attributes of the material surface at the location, and variations in the photocurrent across the surface can be tracked. In this way, the technique offers insight into how different surface motifs affect the photoelectrochemical behavior of the material. This method can be combined with other spectroscopies, such as photoluminescence or Raman, to can further understanding about the studied material. The following work details the use of photoelectrochemical microscopy methods to answer questions relating to both the structure and underlying properties of mechanically exfoliated TMD nanoflakes.

Name thesis:degree_name

Doctor of Philosophy (Ph.D.)

Level thesis:degree_level

Doctoral

Discipline thesis:degree_discipline

Chemistry

Grantor dc:publisher

Colorado State University. Libraries

Year dc:date.issued

2022

Authors dc:creator

• Van Erdewyk, Michael, author
• Sambur, Justin, advisor
• Krummel, Amber, committee member
• Henry, Charles, committee member
• Stasevich, Tim, committee member

Statement dc:rights

• Copyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.

Language dc:language.iso

eng, English

Identifier URI

https://doi.org/10.25675/3.02471

OAI identifier oai:identifier

oai:mountainscholar.org:10217/236060