Title :
Perovskite oxides: New candidate materials for low work function electron emitters
Author :
Jacobs, Ryan M. ; Morgan, D. ; Booske, John H.
Author_Institution :
Mater. Sci. Program, Univ. of Wisconsin-Madison, Madison, WI, USA
Abstract :
Perovskite oxides are promising materials for a new class of electron emitting materials because they possess intrinsically low work functions without the need for an additional surface dipole coating. Density Functional Theory (DFT) was used to examine a series of LaBO3 (B=transition metal) perovskites, and it was found that LaVO3 exhibited the lowest work function of 1.52 eV.
Keywords :
density functional theory; lanthanum compounds; thermionic cathodes; thermionic electron emission; vanadium compounds; work function; DFT; LaVO3; density functional theory; electron emitting materials; electron volt energy 1.52 eV; low work function electron emitters; perovskite oxides; surface dipole coating; transition metal; Cathodes; Discrete Fourier transforms; Elementary particle vacuum; Materials; Nickel; Three-dimensional displays; density functional theory; electron emission; materials modeling; thermionic cathode; work function;
Conference_Titel :
Vacuum Electronics Conference, IEEE International
Conference_Location :
Monterey, CA
DOI :
10.1109/IVEC.2014.6857525
