Diameter-dependent electronic transport properties of Au-catalyst/Ge-nanowire Schottky diodes
Journal Article
·
· Physical Review Letters
OSTI ID:960951
- Los Alamos National Laboratory
- SNL
We present electronic transport measurements in individual Au-catalyst/Ge-nanowire interfaces demonstrating the presence of a Schottky barrier. Surprisingly, the small-bias conductance density increases with decreasing diameter. Theoretical calculations suggest that this effect arises because electron-hole recombination in the depletion region is the dominant charge transport mechanism, with a diameter dependence of both the depletion width and the electron-hole recombination time. The recombination time is dominated by surface contributions and depends linearly on the nanowire diameter.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC52-06NA25396
- OSTI ID:
- 960951
- Report Number(s):
- LA-UR-08-06751; LA-UR-08-6751; PRLTAO; TRN: US201008%%855
- Journal Information:
- Physical Review Letters, Vol. 102; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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