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- W1968669769 abstract "Wide bandgap conductors such as In2O3 and ZnO are used as transparent conducting oxides (TCOs). To date, TCOs are realized using post transition metal cations with largely spread s-orbitals such as In3+, Sn4+, Zn2+ and Cd2+. On the other hand, no good electronic conductor has been realized in oxides of Al, Si and Ge. Here we report the conversion of an oxide of Ge into a good electronic conductor by employing the concept of superdegeneracy. We find that cubic SrGeO3, synthesized under high pressure, displays a direct bandgap of 3.5 eV, a carrier mobility of 12 cm2(Vs)−1, and conductivities of 3 Scm−1 (DC) and 400 Scm−1 (optical conductivity). This is the first Ge-based electronic conductive oxide, and expands the family of TCOs from ionic oxides to covalent oxides. Transparent conducting oxides are wide bandgap conductors that have found a range of applications in optoelectronic devices. In this study, Hosono and colleagues fabricate the first transparent conducting oxide based on germanium." @default.
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- W1968669769 date "2011-09-13" @default.
- W1968669769 modified "2023-09-30" @default.
- W1968669769 title "A germanate transparent conductive oxide" @default.
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- W1968669769 doi "https://doi.org/10.1038/ncomms1484" @default.
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