Supramolecular Architecture and Electrical Properties of a Perylene Derivative in Physical Vapor Deposited Films
The supramolecular structure of organic thin films is a key factor in their optical and electrical properties and, consequently, in the technological applications involving organic electronic. Here, thin films of a perylene derivative, the bis butylimido perylene (BuPTCD), were produced by vacuum thermal evaporation (PVD, physical vapor deposition). The main objective is to investigate the supramolecular structure of the BuPTCD in these PVD films, which implies to control their thickness at nanometer scale and to determine their molecular organization, morphology at micro and nanometer scales and crystallinity. The ultraviolet-visible absorption reveals a uniform growth of the PVD films. The optical and atomic force microscopy images show a homogeneous surface of the film at micro and nanometer scales, respectively. The X-ray diffraction indicates that both powder and PVD film are in the crystalline form. Complementary, a preferential head-on orientation of the molecules in the PVD films is determined via infrared absorption spectroscopy. Besides, the annealing process (200oC) did not affect the molecular organization of the PVD films, revealing a thermal stability of the BuPTCD molecules within the PVD films. Through DC electrical measurements, an electrical conductivity of 7.45x10-10 S/m was determined for BuPTCD PVD films onto Au interdigitated electrodes (IDE-structured devices), which can be enhanced, under illumination, by two orders of magnitude (photoconductivity effect). As proof-of-concept, the IDE-structured devices are tested as gas sensor for trifluoroacetic acid.
Main Authors: | Fernandes,José Diego, Aoki,Pedro Henrique Benites, Aroca,Ricardo Flavio, Macedo Junior,Wagner Dias, Souza,Agda Eunice de, Teixeira,Silvio Rainho, Braunger,Maria Luiza, Olivati,Clarissa de Almeida, Constantino,Carlos José Leopoldo |
---|---|
Format: | Digital revista |
Language: | English |
Published: |
ABM, ABC, ABPol
2015
|
Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392015000800127 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Physical Vapor Deposited Films of a Perylene Derivative: Supramolecular Arrangement and Thermal Stability
by: Fernandes,José Diego, et al.
Published: (2017) -
Supramolecular arrangements of an organometallic forming nanostructured films
by: Camacho,S. A., et al.
Published: (2014) -
Physical vapor deposition of thin films /
by: Mahan, John E.
Published: (c200) -
Metallic Phthalocyanines: impact of the film deposition method on its supramolecular arrangement and sensor performance
by: MAXIMINO,MATEUS D., et al.
Published: (2019) -
Modeling of Chemical Vapor Deposition of Tungsten Films [electronic resource] /
by: Kleijn, Chris R. author., et al.
Published: (1993)