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Field Emission of Electron Anions Clathrated in Subnanometer‐Sized Cages in [Ca 24 Al 28 O 64 ] 4+ (4e – )
Author(s) -
Toda Y.,
Matsuishi S.,
Hayashi K.,
Ueda K.,
Kamiya T.,
Hirano M.,
Hosono H.
Publication year - 2004
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200306484
Subject(s) - field electron emission , materials science , electron , electric field , field (mathematics) , atomic physics , light emission , nanotechnology , optoelectronics , physics , mathematics , quantum mechanics , pure mathematics
[Ca 24 Al 28 O 64 ] 4+ (4e – ) is a new inorganic electride, which is air‐stable even at ∼ 300 °C. 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).