Impact of Graphene Work Function on the Electronic Structures at the Interface between Graphene and Organic Molecules

The impact of graphene work function (WF) on the electronic structure at the graphene/organic interface has been investigated. WF manipulation of graphene is realized using self-assembled monolayers (SAMs) with different end groups. With this method, the upper surface of the functionalized graphene...

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Autores principales: Wang, Haitao, Yang, Xiangdong, Dou, Weidong, Wang, Peng, Ye, Quanlin, Yang, Xuxin, Li, Baoxing, Mao, Hongying
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6723703/
https://www.ncbi.nlm.nih.gov/pubmed/31394772
http://dx.doi.org/10.3390/nano9081136
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author Wang, Haitao
Yang, Xiangdong
Dou, Weidong
Wang, Peng
Ye, Quanlin
Yang, Xuxin
Li, Baoxing
Mao, Hongying
author_facet Wang, Haitao
Yang, Xiangdong
Dou, Weidong
Wang, Peng
Ye, Quanlin
Yang, Xuxin
Li, Baoxing
Mao, Hongying
author_sort Wang, Haitao
collection PubMed
description The impact of graphene work function (WF) on the electronic structure at the graphene/organic interface has been investigated. WF manipulation of graphene is realized using self-assembled monolayers (SAMs) with different end groups. With this method, the upper surface of the functionalized graphene remains intact, and thus precludes changes of molecular orientation and packing structures of subsequently deposited active materials. The WF of NH(2)-SAM functionalized graphene is ~3.90 eV. On the other hand, the WF of graphene increases to ~5.38 eV on F-SAM. By tuning the WF of graphene, an upward band bending is found at the ZnPc/graphene interface on F-SAM. At the interface between C(60) and NH(2)-SAM modified graphene, a downward band bending is observed.
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spelling pubmed-67237032019-09-10 Impact of Graphene Work Function on the Electronic Structures at the Interface between Graphene and Organic Molecules Wang, Haitao Yang, Xiangdong Dou, Weidong Wang, Peng Ye, Quanlin Yang, Xuxin Li, Baoxing Mao, Hongying Nanomaterials (Basel) Article The impact of graphene work function (WF) on the electronic structure at the graphene/organic interface has been investigated. WF manipulation of graphene is realized using self-assembled monolayers (SAMs) with different end groups. With this method, the upper surface of the functionalized graphene remains intact, and thus precludes changes of molecular orientation and packing structures of subsequently deposited active materials. The WF of NH(2)-SAM functionalized graphene is ~3.90 eV. On the other hand, the WF of graphene increases to ~5.38 eV on F-SAM. By tuning the WF of graphene, an upward band bending is found at the ZnPc/graphene interface on F-SAM. At the interface between C(60) and NH(2)-SAM modified graphene, a downward band bending is observed. MDPI 2019-08-07 /pmc/articles/PMC6723703/ /pubmed/31394772 http://dx.doi.org/10.3390/nano9081136 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wang, Haitao
Yang, Xiangdong
Dou, Weidong
Wang, Peng
Ye, Quanlin
Yang, Xuxin
Li, Baoxing
Mao, Hongying
Impact of Graphene Work Function on the Electronic Structures at the Interface between Graphene and Organic Molecules
title Impact of Graphene Work Function on the Electronic Structures at the Interface between Graphene and Organic Molecules
title_full Impact of Graphene Work Function on the Electronic Structures at the Interface between Graphene and Organic Molecules
title_fullStr Impact of Graphene Work Function on the Electronic Structures at the Interface between Graphene and Organic Molecules
title_full_unstemmed Impact of Graphene Work Function on the Electronic Structures at the Interface between Graphene and Organic Molecules
title_short Impact of Graphene Work Function on the Electronic Structures at the Interface between Graphene and Organic Molecules
title_sort impact of graphene work function on the electronic structures at the interface between graphene and organic molecules
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6723703/
https://www.ncbi.nlm.nih.gov/pubmed/31394772
http://dx.doi.org/10.3390/nano9081136
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