Combining high conductivity with complete optical transparency: A band structure approach

J. E. Medvedeva*, A. J. Freeman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

34 Scopus citations


A comparison of the structural, optical and electronic properties of the recently discovered transparent conducting oxide (TCO), nanoporous Ca 12Al14O33, with those of the conventional TCOs (such as Sc-doped CdO) indicates that this material belongs conceptually to a new class of transparent conductors. For this class of materials, we formulate criteria for the successful combination of high electrical conductivity with complete transparency in the visible range and emphasize the significant correlation between their structural characteristics and electronic and optical properties. Our analysis suggests that this set of requirements can be met for a group of novel materials called electrides which may have desired features such as connected structural cavities, large bandgaps and near-metallic electronic conductivity.

Original languageEnglish (US)
Pages (from-to)583-587
Number of pages5
JournalEurophysics Letters
Issue number4
StatePublished - Feb 2005

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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