Controlling surface carrier density by illumination in the transparent conductor La-doped BaSnO3
Abstract
LaxBa1-xSnO3 is a promising transparent conducting oxide whose high mobility facilitates potential applications in transparent electronics, oxide electronics, and power electronics. Here, we report quantitative comparisons between angle-resolved photoemission and density functional theory, demonstrating a close agreement between calculations and the measured bulk electronic structure. Further measurements reveal upward band bending at the film-vacuum interface, while ultraviolet (UV) exposure is found to increase the surface electron density, similar to other oxides. These results elucidate the LaxBa1-xSnO3 (LBSO) interfacial electronic structure and offer a route for UV carrier density control, critical steps towards realizing LBSO-based electronic devices.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 30, 2018
- Source ID
- 10.1063/1.5020716
Entities
People
- Darrell G. Schlom
- Edward B. Lochocki
- Hanjong Paik
- Kyle. M. Shen
- Masaki Uchida
Organizations
- Air Force Office of Scientific Research
- Cornell University
- Division of Electrical, Communications & Cyber Systems
- Division of Materials Research
- University of Tokyo