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Boundary and Symmetry Determined Exciton Distribution in Two Dimensional Silicon Nanosheets

Wu, Qi, Wang, Xiao-Hui, Niehaus, Thomas A. and Zhang, R. Q. (2014) Boundary and Symmetry Determined Exciton Distribution in Two Dimensional Silicon Nanosheets. Journal of Physical Chemistry C 118, p. 20070.

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Other URL: http://pubs.acs.org/doi/abs/10.1021/jp501433t


Abstract

The size-dependent optical properties of silicon nanosheets (SiNSs) are investigated using the time-dependent density functional based tight-binding method (TD-DFTB). Evidence for the formation of self-trapped exciton states in SiNSs is provided by examining the localization properties in terms of the characteristic size of the electronic excitations. We show that the frontier molecular orbitals ...

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Item type:Article
Date:11 August 2014
Institutions:Physics > Institute of Theroretical Physics > Alumni or Retired Professors > Group Thomas Niehaus
Identification Number:
ValueType
10.1021/jp501433tDOI
Dewey Decimal Classification:500 Science > 530 Physics
Status:Published
Refereed:Yes, this version has been refereed
Created at the University of Regensburg:Yes
Item ID:30704
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