A DFT Study on Electronic and Structural Properties of Graphene Nanoribbons

Authors I.K. Petrushenko
Affiliations

Physical and Technical Institute, Irkutsk National Research Technical University, 83, Lermontov st., 664074, Irkutsk, Russia

Е-mail igor.petrushenko@istu.edu
Issue Volume 8, Year 2016, Number 4
Dates Received 22 August 2016; revised manuscript received 23 November 2016; published online 30 November 2016
Citation I.K. Petrushenko, J. Nano- Electron. Phys. 8 No 4(2), 04052 (2016)
DOI 10.21272/jnep.8(4(2)).04052
PACS Number(s) 31.15.E –, 61.48. – c, 62.20.de,71.15.Mb,
Keywords Graphene nanoribbon (3) , Electronic structure (3) , DFT (15) , Nanostructure (18) , PBE (3) .
Annotation We carry out quantum chemistry calculations on armchair graphene nanoribbons (AGNRs) using density-functional theory. PVE/SVP results for the dependence of energies of the highest occupied (HOMO) and lowest unoccupied molecular orbitals (LUMO) as well as energy gaps on AGNR widths and lengths are presented. We compare the HOMO and LUMO energies of a series of AGNRs with those energies of fullerene C60 and its soluble derivative, PCBM, to ascertain whether it is possible to use such AGNRs as electron acceptors in organic solar cells. The influence of Stone-Wales defects embedded in the frameworks of AGNRs on their electronic properties is also studied.

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