Format:
Online-Ressource
ISSN:
1521-4095
Content:
Abstract: The carrier mobility for carbon electronic materials is an important parameter for optoelectronics. We report here some recently developed theoretical tools to predict the mobility without any free parameters. Carrier scatterings with phonons and traps are the key factors in evaluating the mobility. We consider three major scattering regimes: i) where the molecular internal vibration severely induces charge self‐trapping and, thus, the hopping mechanism dominates; ii) where both intermolecular and intramolecular scatterings come to play roles, so the Holstein‐Peierls polaron model is applied; and, iii) where charge is well delocalized with coherence length comparable with acoustic phonon wavelength, so that a deformation potential approach is more appropriate. We develop computational methods at the first‐principles level for the three different cases that have extensive potential application in rationalizing material design.
In:
volume:23
In:
number:9
In:
year:2011
In:
pages:1145-1153
In:
extent:9
In:
Advanced materials, Weinheim : Wiley-VCH, 1989-, 23, Heft 9 (2011), 1145-1153 (gesamt 9), 1521-4095
Language:
English
DOI:
10.1002/adma.201003503
URN:
urn:nbn:de:101:1-2023040607072266438725
URL:
https://doi.org/10.1002/adma.201003503
URL:
https://nbn-resolving.org/urn:nbn:de:101:1-2023040607072266438725
URL:
https://d-nb.info/1285578201/34
URL:
https://doi.org/10.1002/adma.201003503
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