Yasuyuki Hikita (SIMES Seminar)

Date(s) - Feb 5 2016
11:00 AM - 12:00 PM

Sycamore Room, Building 40, room 195


Engineering dipoles at metal oxide interfaces: from diodes to photocatalysts

 Yasuyuki Hikita

Staff Scientist, SLAC

The rich physical and chemical properties found in transition metal oxides make them essential materials for electronic and energy harvesting devices, chemical sensors, and catalysts. A common challenge routinely faced in designing these devices is the control of carrier transport across solid/solid or solid/liquid (gas) interfaces. One powerful approach to overcome this challenge is to artificially shift the interface energy level alignments by formation of an electrostatic dipole. In this seminar, I will introduce our developments toward engineering functional oxide interfaces using epitaxial heterostructures including: 1) control of macroscopic junction properties in oxide Schottky junctions, 2) visualization of oxide interface dipoles using microscopy, and 3) application of oxide dipoles at oxide/liquid interfaces for solar hydrogen generation.