Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/15902
Title: Organic Thin Film Transistors Using a Liquid Crystalline Palladium Phthalocyanine as Active Layer
Authors: Ray, AK
Jim´enez Tejada, JA
Lopez-Varo, P
Chaure, NB
Chambrier, I
Cammidge, AN
Cook, MJ
Jafari-Fini, A
Keywords: Phthalocyanine;Field effect;Contact effects;Device parameters;Differential scanning electrical
Issue Date: 2018
Publisher: AIP PUBLISHING
Citation: Journal of Applied Physics
Abstract: 70nm thick solution-processed films of a palladium phthalocyanine (PdPc6) derivative bearing eight hexyl (−C6H13) chains at non-peripheral positions have been employed as active layers in the fabrication of bottomgate bottom-contact organic thin film transistors (OTFTs) deposited on highly doped p-type Si (110) substrates with SiO2 gate dielectric. The dependence of the transistor electrical performance upon the mesophase behavior of the PdPc6 films has been investigated by measuring the output and transfer characteristics of the OTFT having its active layer ex-situ vacuum annealed at temperatures between 500 oC and 200 oC. A clear correlation between the annealing temperature and the threshold voltage and carrier mobility of the transistors, and the transition temperatures extracted from the differential scanning calorimetric (DSC) curves for bulk materials has been established. This direct relation has been obtained by means of a compact electrical model in which the contact effects are taken into account. The precise determination of the contact-voltage drain-current curves allows for obtaining such a relation.
URI: http://bura.brunel.ac.uk/handle/2438/15902
ISSN: 0021-8979
1089-7550
Appears in Collections:Dept of Mechanical Aerospace and Civil Engineering Research Papers

Files in This Item:
File Description SizeFormat 
FullText.pdf871.8 kBAdobe PDFView/Open


Items in BURA are protected by copyright, with all rights reserved, unless otherwise indicated.