PUMA
Istituto dei materiali per l'elettronica ed il magnetismo     
Cicoira F., Coppedè N., Iannotta S., Martel R. Ambipolar copper phthalocyanine transistors with carbon nanotube array electrodes. In: Applied Physics Letters, vol. 98 (18) article n. 183303. American Institute of Physics, 2011.
 
 
Abstract
(English)
We report on organic thin film transistors (OTFTs) based on copper phthalocyanine (CuPc) having electrodes consisting of isolated carbon nanotube (CNT) arrays embedded in the organic layer. CuPc OTFT with CNT array electrodes show p-type behavior with Ohmic hole injection, high hole mobility, and enhanced switching characteristics at low voltage. The p-type devices are converted to ambipolar OTFT by vacuum annealing. Despite the large offset between the CNT work function and the CuPc energy levels, electron injection characteristics are also Ohmic. The extension of CNT electrodes to the phthalocyanine family confirms the validity of this contact approach for organic electronic devices.
URL: http://apl.aip.org/resource/1/applab/v98/i18/p183303_s1
DOI: 10.1063/1.3585658
Subject FIELD-EFFECT TRANSISTORS
THIN-FILM TRANSISTORS
TRANSPORT-PROPERTIES
85.30.Tv
85.35.Kt
73.30.+y


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