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Effect of charge-transfer complex on the energy level alignment between graphene and organic molecules

Title
Effect of charge-transfer complex on the energy level alignment between graphene and organic molecules
Author
박완준
Keywords
WAVE BASIS-SET; TRANSPARENT ELECTRODES; SEMICONDUCTORS; FILMS; FIELD; GAS
Issue Date
2012-05
Publisher
AMERICAN INSTITUTE OF PHYSICS
Citation
Applied Physics Letters, 2012, 100(18), P.183102
Abstract
We performed density-functional theory calculations to study the electronic structures at the interfaces between graphene and organic molecules that have been used in organic light-emitting diodes. In terms of work function, graphene itself is not favorable as either anode or cathode for commonly used electron or hole transport molecular species. However, the formation of charge transfer complex on the chemically inert sp(2) carbon surface can provide a particular advantage. Unlike metal surfaces, the graphene surface remains non-bonded to electron-accepting molecules even after electron transfer, inducing an improved Fermi-level alignment with the highest-occupied-molecular-orbital level of the hole-injecting-layer molecules.
URI
https://aip.scitation.org/doi/10.1063/1.4709428http://hdl.handle.net/20.500.11754/49881
ISSN
0003-6951; 1077-3118
DOI
10.1063/1.4709428
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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