Electronic properties of semiconducting naphthalene bisimide derivatives – ultraviolet photoelectron spectroscopy versus electrochemistry

Renata Rybakiewicz , Paweł Gawryś , Dimitris Tsikritzis , Konstantinos Emmanouil , Stella Kennou , Małgorzata Zagórska , Adam Proń

Abstract

Key parameters for organic semiconductors used as active layers in organic electronic devices are: solution processability, charge carriers mobility as well as the electron affinity (EA) and the ionization potential (IP) which determine their redox properties and by consequence their air stability. The purpose of the present work was to investigate the influence of different substituents at imide nitrogen atom (alkylaryl, thienylene and triarylamine) and at naphthalene core (triarylamine) on the IP and EA values in recently synthesized naphthalene bisimide derivatives, tested as promising semiconductors for flexible n-channel or ambipolar organic field effect transistors (OFETs). The ionization potentials were determined by Ultra-violet Photoelectron Spectroscopy (UPS) for thin semiconductor films evaporated in ultra-high vacuum. The values obtained by photoelectron spectroscopy were compared with the ones determined from electrochemical investigations of the semiconductors dissolved in an electrolyte solution. Using cyclic voltammetry the IPs was estimated from the onset of the first oxidation peak whereas EAs from the onset of the first reduction peak. In cases where it was not possible to record the oxidation wave in the electrolyte electrochemical window, the IPs values were calculated by subtracting the energy of the spectroscopically (UV–vis–NIR) determined band gap from the EA values and changing the sign. A good correlation between the spectroscopic (UPS) and electrochemical data was found. © 2013 Elsevier Ltd.
Author Renata Rybakiewicz (FC / CPCT)
Renata Rybakiewicz,,
- Chair Of Polymer Chemistry And Technology
, Paweł Gawryś (FC / CPCT)
Paweł Gawryś,,
- Chair Of Polymer Chemistry And Technology
, Dimitris Tsikritzis - [Panepistimion Patron]
Dimitris Tsikritzis,,
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, Konstantinos Emmanouil - [Panepistimion Patron]
Konstantinos Emmanouil,,
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, Stella Kennou - [Panepistimion Patron]
Stella Kennou,,
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, Małgorzata Zagórska (FC / CPCT)
Małgorzata Zagórska,,
- Chair Of Polymer Chemistry And Technology
, Adam Proń (FC / CPCT)
Adam Proń,,
- Chair Of Polymer Chemistry And Technology
Journal seriesElectrochimica Acta, ISSN 0013-4686
Issue year2013
Vol96
Pages13-17
Publication size in sheets0.5
Keywords in EnglishUltra-violet Photoelectron Spectroscopy, Cyclic voltammetry, Naphthalene bisimides
ASJC Classification1603 Electrochemistry; 1500 General Chemical Engineering
DOIDOI:10.1016/j.electacta.2013.02.041
URL http://www.sciencedirect.com/science/article/pii/S0013468613002727
Languageen angielski
File
1-s2.0-S0013468613002727-main.pdf 309.21 KB
Score (nominal)40
Score sourcejournalList
ScoreMinisterial score = 35.0, 25-07-2020, ArticleFromJournal
Ministerial score (2013-2016) = 40.0, 25-07-2020, ArticleFromJournal
Publication indicators WoS Citations = 40; Scopus Citations = 42; GS Citations = 53.0; Scopus SNIP (Source Normalised Impact per Paper): 2013 = 1.582; WoS Impact Factor: 2013 = 4.086 (2) - 2013=4.433 (5)
Citation count*54 (2020-09-15)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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