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Volumn 16, Issue 8, 2004, Pages 685-689

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

Author keywords

[No Author keywords available]

Indexed keywords

CALCIUM COMPOUNDS; CRYSTAL STRUCTURE; DENSITY (SPECIFIC GRAVITY); ELECTRONS; NANOSTRUCTURED MATERIALS; NEGATIVE IONS; PHOTOELECTRON SPECTROSCOPY; STOICHIOMETRY;

EID: 2442526717     PISSN: 09359648     EISSN: None     Source Type: Journal    
DOI: 10.1002/adma.200306484     Document Type: Article
Times cited : (187)

References (29)
  • 1
    • 0000528986 scopus 로고
    • J. L. Dye, Science 1990, 247, 663.
    • (1990) Science , vol.247 , pp. 663
    • Dye, J.L.1
  • 2
    • 0043269412 scopus 로고    scopus 로고
    • J. L. Dye, Science 2003, 301, 607.
    • (2003) Science , vol.301 , pp. 607
    • Dye, J.L.1
  • 14
    • 2442450112 scopus 로고    scopus 로고
    • note
    • Sushko et al. demonstrated by ab initio embedded cluster calculations that a deformed cage is stabilized when it captures an electron, which localizes electrons for the dilute extra electron limit [15,16]. They also noted that standard density functional theories often tend to delocalize electron density. Although the present calculation does not consider these effects, it is thought sufficient for understanding the electronic states of the electrons clathrated at a high density.
  • 17
    • 2442483408 scopus 로고    scopus 로고
    • note
    • Several measurements showed some distribution in work function values for different sample lots, which would be due to the difficulty in preparing the same sample surface by mechanical polishing. However, the values are in the range of 0.610.1 eV.
  • 20
    • 0001498224 scopus 로고
    • A similar, weak DOS was observed on transparent conductive oxides with large carrier densities: a) P. A. Cox, R. G. Egdell, C. Harding, A. F. Orchard, W. R. Patterson, P. J. Tavener, Solid State Commun. 1982, 44, 837. b) P. A. Cox, R. G. Egdell, C. Harding, W. R. Patterson, P. J. Tavener, Surf. Sci. 1982, 123, 179.
    • (1982) Surf. Sci. , vol.123 , pp. 179
    • Cox, P.A.1    Egdell, R.G.2    Harding, C.3    Patterson, W.R.4    Tavener, P.J.5
  • 21
    • 2442527368 scopus 로고    scopus 로고
    • note
    • "Interstitial" DOS indicates electron density outside the muffin-tin wells used for the LAPW/APW calculations.
  • 22
    • 2442563207 scopus 로고    scopus 로고
    • note
    • The work function value obtained, ≈ 0.6 eV, is similar to those reported for organic electrides [18,22]. It was recently suggested that grain boundary defects might be the origin of electron field emission in organic electrides [22]. However, our material is a single crystal and more stable than organic electrides. Therefore, it is unlikely that this hypothesis explains our observations.
  • 28
    • 2442601045 scopus 로고    scopus 로고
    • note
    • The electride is also fabricated from densely sintered polycrystalline and thin films.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.