Nitrogen Ion Beam-Mediated Dry Patterning of Conjugated Polymer Films for Organic Field-Effect Transistors

2016 ◽  
Vol 2 (7) ◽  
pp. 1600115 ◽  
Author(s):  
Jaehoon Jeong ◽  
Seungsoo Lee ◽  
Jooyeok Seo ◽  
Chulyeon Lee ◽  
Hwajeong Kim ◽  
...  
2018 ◽  
Vol 30 (20) ◽  
pp. 1705463 ◽  
Author(s):  
Dongyoon Khim ◽  
Alessandro Luzio ◽  
Giorgio Ernesto Bonacchini ◽  
Giuseppina Pace ◽  
Mi-Jung Lee ◽  
...  

2019 ◽  
Vol 11 (33) ◽  
pp. 30079-30088 ◽  
Author(s):  
Cecilia Teixeira da Rocha ◽  
Ge Qu ◽  
Xuegeng Yang ◽  
Rishi Shivhare ◽  
Mike Hambsch ◽  
...  

2005 ◽  
Vol 871 ◽  
Author(s):  
Nenad Marjanović ◽  
Th. B. Singh ◽  
Serap Günes ◽  
Helmut Neugebauer ◽  
Niyazi Serdar Sariciftci

AbstractPhotoactive organic field-effect transistors, photOFETs, based on a conjugated polymer/fullerene blend, MDMO-PPV: PCBM (1:4), and polymeric dielectrics as polyvinylalcohol (PVA) or divinyltetramethyldisiloxane-bis(benzocyclobutene) (BCB) with top source and drain electrodes were fabricated and characterized in dark and under AM1.5 illumination. With LiF/Al as top source and drain contacts the devices feature n-type transistor behavior in dark with electron mobility of 10-2cm2/Vs. Under illumination, a large free carrier concentration from photo-induced charge transfer at the polymer/fullerene bulk heterojunction (photodoping) is created. The device performance was studied with different illumination intensities and showed to be strongly influenced by the nature of the organic dielectric/organic semiconductor interface resulting in phototransistor behavior in BCB-based photOFETs and in phototransistor or photoresistor behavior for PVA-based photOFETs.


2006 ◽  
Vol 10 (10) ◽  
pp. 1179-1189 ◽  
Author(s):  
Christian Kelting ◽  
Wilfried Michaelis ◽  
Andreas Hirth ◽  
Dieter Wöhrle ◽  
Derck Schlettwein

Films of organic polymers were prepared and investigated as insulating layers in contact with phthalocyanines as organic semiconductors for use in organic field effect transistors. The polymer films were obtained either by a high-vacuum technique based on the thermal decomposition of polymers and polymerization of the fragments on a substrate, by the spin-coating of polymer solutions or by the cross-linking of spin-coated precursors. Poly(vinylchloride), poly(vinylidenefluoride), poly(acrylonitrile), poly(methylmethacrylate), poly( N -vinylpyrrolidone), poly(styrene), poly(4-vinylpyridine), poly( N -vinylcarbazole) and a polyimide were used as polymers. The film growth was studied by mass spectrometry and infrared spectroscopy. Electrochemical measurements by cyclic voltammetry served to analyze the properties of the polymer films. The morphology was determined by atomic force microscopy. Interactions of the films with phthalocyaninatozinc ( PcZn ) was analyzed for co-evaporated PcZn in the polymer films, to probe the chemical compatibility of the methods. Subsequently, evaporated PcZn or hexadecafluorophthalocyaninato-oxo-vanadium ( F 16 PcVO ) thin films were studied in detail by UV-vis spectroscopy and by electrical measurements to investigate interface formation, intermolecular coupling and electrical conduction in such films. The applicability of the different polymers as dielectric layers in organic field effect transistors, with phthalocyanines as the active semiconductor thin films, is discussed, based on their dielectric behavior and observed growth characteristics.


Nanoscale ◽  
2019 ◽  
Vol 11 (20) ◽  
pp. 10004-10016 ◽  
Author(s):  
Solip Choi ◽  
Jae Won Jeong ◽  
Gyounglyul Jo ◽  
Byung Chol Ma ◽  
Mincheol Chang

High environmental stability of organic field-effect transistors is achieved by the use of conjugated polymer/paraffin blends.


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