Dr. Yatir Sadia
22/01/2026
אודיטוריום ע"ש דויד וואנג, בניין מידן, קומה 3
13:30
Heteroanionic materials are some of the most interesting materials in many applications due to the very different interactions the different anions produce in the materials. In this talk we will discuss what is studied in the heteroanionic materials lab at Bar Ilan university including several examples of thermoelectric and ion conducting materials for energy applications.
The Bi2O2Te-Bi2O2Se system is highly interesting as a n-type equivalent to the p-type BiCuOSe. However it is not easily produced in labs and has problematic stability in different environments. In this research we show how to consistently produce the Bi2O2Te phase, and it's thermoelectric properties. The solubility of different dopants such as Ag, Mg and Cu is studied and the thermoelectric properties of these are tested as well. Finely the solubility and thermoelectric properties of the Te and Se systems is tested using Bi2O2TexSe1-x with x=0,0.25,0.5,0.75,1. Then we will dive into Fluorine ion conducting systems such as TiO2-SrF2 and LaOF systems to discuss their formation and ion conducting properties their long term stability. Finally we will look into ionic thermoelectric materials as an alternative to traditional thermoelectric materials in specific applications.