Presentation Information
[2E03]Dopant incorporation sites of functional materials studied by photoelectron holography
*Takayoshi Yokoya1 (1. Okayama University)
Doping is a highly useful method to control physical properties of materials. It is also used to generate new functionalities. To effectively increase functional properties, it is important to understand how the dopants are incorporated into the matrix. This is because dopants incorporated at different positions from an expected position normally do not work to improve the functionality and even hinter it. Therefore, to determine the incorporated sites and local atomic arrangement of dopant atoms are of essential importance. Recently, photoelectron holography (PEH), which can reveal chemical-site resolved 3-dimensional dopant local structure, has become possible and provided valuable information by utilizing high intensity third generation synchrotron light. In this talk, PEH studies on phosphorus(P)-doped diamond and tungsten(W)-doped VO2 are presented.