Loading…
Theoretical Predictions of Size-Dependent Carrier Mobility and Polarity in Graphene
First-principles density functional theory coupled with deformation potential calculations indicate a strong width-dependent carrier mobility: for an armchair graphene ribbon whose width (i.e., number of carbons along the edge) is N = 3k, the room-temperature electron mobility is calculated to be ∼1...
Saved in:
Published in: | Journal of the American Chemical Society 2009-12, Vol.131 (49), p.17728-17729 |
---|---|
Main Authors: | , , , , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Summary: | First-principles density functional theory coupled with deformation potential calculations indicate a strong width-dependent carrier mobility: for an armchair graphene ribbon whose width (i.e., number of carbons along the edge) is N = 3k, the room-temperature electron mobility is calculated to be ∼106 cm2 V−1 s−1 and the hole mobility ∼104 cm2 V−1 s−1, while for N = 3k + 1 or 3k + 2, the hole mobility is calculated to be 4−8 × 105 cm2 V−1 s−1 and the electron mobility ∼104 cm2 V−1 s−1. Such alternating behavior is absent in zigzag-type graphene. |
---|---|
ISSN: | 0002-7863 1520-5126 |
DOI: | 10.1021/ja907528a |