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dc.contributor.authorWang, Ti
dc.contributor.authorKafle, Tika R.
dc.contributor.authorKattel, Bhupal
dc.contributor.authorLiu, Qingfeng
dc.contributor.authorWu, Judy Z.
dc.contributor.authorChan, Wai-Lun
dc.date.accessioned2017-09-08T21:26:30Z
dc.date.available2017-09-08T21:26:30Z
dc.date.issued2016-06
dc.identifier.citationWang, T., Kafle, T. R., Kattel, B., Liu, Q., Wu, J., & Chan, W.-L. (2016). Growing Ultra-flat Organic Films on Graphene with a Face-on Stacking via Moderate Molecule-Substrate Interaction. Scientific Reports, 6, 28895. http://doi.org/10.1038/srep28895en_US
dc.identifier.urihttp://hdl.handle.net/1808/24931
dc.descriptionA grant from the One-University Open Access Fund at the University of Kansas was used to defray the author's publication fees in this Open Access journal. The Open Access Fund, administered by librarians from the KU, KU Law, and KUMC libraries, is made possible by contributions from the offices of KU Provost, KU Vice Chancellor for Research & Graduate Studies, and KUMC Vice Chancellor for Research. For more information about the Open Access Fund, please see http://library.kumc.edu/authors-fund.xml.en_US
dc.description.abstractThe electronic properties of small molecule organic crystals depend heavily on the molecular orientation. For multi-layer organic photovoltaics, it is desirable for the molecules to have a face-on orientation in order to enhance the out-of-plane transport properties. However, it is challenging to grow well-ordered and smooth films with a face-on stacking on conventional substrates such as metals and oxides. In this work, metal-phthalocyanine molecules is used as a model system to demonstrate that two-dimensional crystals such as graphene can serve as a template for growing high quality, ultra-flat organic films with a face-on orientation. Furthermore, the molecule-substrate interaction is varied systematically from strong to weak interaction regime with the interaction strength characterized by ultrafast electron transfer measurements. We find that in order to achieve the optimum orientation and morphology, the molecule-substrate interaction needs to be strong enough to ensure a face-on stacking while it needs to be weak enough to avoid film roughening.en_US
dc.publisherNature Publishing Groupen_US
dc.rightsThis work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/en_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en_US
dc.titleGrowing Ultra-flat Organic Films on Graphene with a Face-on Stacking via Moderate Molecule-Substrate Interactionen_US
dc.typeArticleen_US
kusw.kuauthorWang, Ti
kusw.kuauthorKafle, Tika R.
kusw.kuauthorKattel, Bhupal
kusw.kuauthorLiu, Qingfeng
kusw.kuauthorWu, Judy
kusw.kuauthorChan, Wai-Lun
kusw.kudepartmentPhysics and Astronomyen_US
dc.identifier.doi10.1038/srep28895en_US
kusw.oaversionScholarly/refereed, publisher versionen_US
kusw.oapolicyThis item meets KU Open Access policy criteria.en_US
dc.identifier.pmid4928121en_US
dc.rights.accessrightsopenAccess


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This work is licensed under a Creative Commons Attribution 4.0 International License. The images
or other third party material in this article are included in the article’s Creative Commons license,
unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
Except where otherwise noted, this item's license is described as: This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/