English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/214214
Share/Impact:
Statistics
logo share SHARE   Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Impact of Nanomorphology on Surface Doping of Organic Semiconductors: The Pentacene−C60F48 Interface

AuthorsSilvestri, Francesco; Prieto, Mauricio J.; Babuji, Adara; Tănase, Liviu C.; Caldas, Lucas de Souza; Solomeshch, Olga; Schmidt, Thomas; Ocal, Carmen ; Barrena, Esther
Keywordsorganic semiconductors
molecular doping
interface
nanomorphology
pentacene
C60F48
AFM
XPEEM
Issue Date3-Jun-2020
PublisherAmerican Chemical Society
CitationACS Applied Materials and Interfaces 12(22): 25444–25452 (2020)
AbstractEstablishing the rather complex correlation between the structure and the charge transfer in organic−organic heterostructures is of utmost importance for organic electronics and requires spatially resolved structural, chemical, and electronic details. Insight into this issue is provided here by combining atomic force microscopy, Kelvin probe force microscopy, photoemission electron microscopy, and low-energy electron microscopy for investigating a case study. We select the interface formed by pentacene (PEN), benchmark among the donor organic semiconductors, and a p-type dopant from the family of fluorinated fullerenes. As for Buckminsterfullerene (C60), the growth of its fluorinated derivative C60F48 is influenced by the thickness and crystallinity of the PEN buffer layer, but the behavior is markedly different. We provide a microscopic description of the C60F48/PEN interface formation and analyze the consequences in the electronic properties of the final heterostructure. For just one single layer of PEN, a laterally complete but noncompact C60F48/PEN interface is created, importantly affecting the surface work function. Nonetheless, from the very beginning of the second layer formation, the presence of epitaxial and nonepitaxial PEN domains dramatically influences the growth dynamics and extremely well packed two-dimensional C60F48 islands develop. Insightful elemental maps of the C60F48/PEN surface spatially resolve the nonuniform distribution of the dopant molecules, which leads to a heterogeneous work function landscape.
Publisher version (URL)http://dx.doi.org/10.1021/acsami.0c05583
URIhttp://hdl.handle.net/10261/214214
ISSN1944-8244
Appears in Collections:(ICMAB) Artículos
Files in This Item:
File Description SizeFormat 
Silvestri_ACSApplMatInterf_2020_postprint.pdf Embargoed until June 3, 20212,23 MBAdobe PDFThumbnail
View/Open    Request a copy
Show full item record
Review this work
 


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.