Investigation of work function and surface energy of aluminum: An ab-initio study

The work function and surface energy of aluminum with different orientations are investigated by employing the DFT simulation. We mainly focus on two situations: pure aluminum surface and aluminum surface with impurities. The numerical results indicate that the work function of Al (100) is larger th...

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Main Authors: Cheng, Shuguang, Ming Tan, Cher, Deng, Tianqi, He, Feifei, Zhang, Shuai, Su, Haibin
Format: Conference Proceeding
Language:English
Subjects:
Aluminum
Atomic simulation
Conferences
DFT method
Electric dipoles
Impurities
Materials
Nanoelectronics
Orientation
Rough surfaces
Surface contamination
Surface energy
Surface roughness
work function and aluminum
Work functions
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Ming Tan, Cher
Deng, Tianqi
He, Feifei
Zhang, Shuai
Su, Haibin
description The work function and surface energy of aluminum with different orientations are investigated by employing the DFT simulation. We mainly focus on two situations: pure aluminum surface and aluminum surface with impurities. The numerical results indicate that the work function of Al (100) is larger than Al (110). With the introduction of the impurities (carbon atoms), the work function increases because of the extra electric dipoles on the surface. We also find that the surface energy of Al (100) is smaller than that of Al (110) indicating that Al (100) surface is more stable. When there are impurities on the surface, the surface energy decreases for silicon impurity and increases for calcium impurity. The magnitude of the increase is related to the orientation of the surface.
doi_str_mv 10.1109/INEC.2013.6466081
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source IEEE Electronic Library (IEL) Conference Proceedings
subjects Aluminum
Atomic simulation
Conferences
DFT method
Electric dipoles
Impurities
Materials
Nanoelectronics
Orientation
Rough surfaces
Surface contamination
Surface energy
Surface roughness
work function and aluminum
Work functions
title Investigation of work function and surface energy of aluminum: An ab-initio study
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