Field emission of electron anions clathrated in subnanometer-sized cages in [Ca24Al28O64](4+)(4e(-))

Toda Y; Matsuishi S; Hayashi K; Ueda K; Kamiya T; Hirano M; Hosono H

Advanced Materials, Vol.16, No.8, 685-685, 2004

DOI10.1002/adma.200306484 Export Citation

Field emission of electron anions clathrated in subnanometer-sized cages in [Ca24Al28O64](4+)(4e(-))

Toda Y, Matsuishi S, Hayashi K, Ueda K, Kamiya T, Hirano M, Hosono H

[Ca24Al28O64](4+) (4e(-)) is a new inorganic electride, which is air-stable even at similar to 300 degreesC. Its electron field-emission properties originate from electron anions encaged in subnanometer-sized cages embedded in its crystal structure, and the emission current is controlled by Fowler-Nordheim field emission at high electric fields (see Figure). Field-emission display devices demonstrate bright light emission clearly visible under ambient light (inset).