Study on copper phthalocyanine and perylene-based ambipolar organic light-emitting field-effect transistors produced using neutral beam deposition method

Dae Kyu Kim, Jeong Do Oh, Eun Sol Shin, Hoon Seok Seo, Jong-Ho Choi

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The neutral cluster beam deposition (NCBD) method has been applied to the production and characterization of ambipolar, heterojunction-based organic light-emitting field-effect transistors (OLEFETs) with a top-contact, multi-digitated, long-channel geometry. Organic thin films of n-type N,N′-ditridecylperylene-3,4,9,10-tetracarboxylic diimide and p-type copper phthalocyanine were successively deposited on the hydroxyl-free polymethyl-methacrylate (PMMA)-coated SiO2 dielectrics using the NCBD method. Characterization of the morphological and structural properties of the organic active layers was performed using atomic force microscopy and X-ray diffraction. Various device parameters such as hole- and electron-carrier mobilities, threshold voltages, and electroluminescence (EL) were derived from the fits of the observed current-voltage and current-voltage-light emission characteristics of OLEFETs. The OLEFETs demonstrated good field-effect characteristics, well-balanced ambipolarity, and substantial EL under ambient conditions. The device performance, which is strongly correlated with the surface morphology and the structural properties of the organic active layers, is discussed along with the operating conduction mechanism.

Original languageEnglish
Article number164503
JournalJournal of Applied Physics
Volume115
Issue number16
DOIs
Publication statusPublished - 2014 Apr 28

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neutral beams
field effect transistors
copper
electroluminescence
electric potential
carrier mobility
electron mobility
polymethyl methacrylate
threshold voltage
light emission
heterojunctions
atomic force microscopy
conduction
thin films
geometry
diffraction
x rays

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Study on copper phthalocyanine and perylene-based ambipolar organic light-emitting field-effect transistors produced using neutral beam deposition method. / Kim, Dae Kyu; Oh, Jeong Do; Shin, Eun Sol; Seo, Hoon Seok; Choi, Jong-Ho.

In: Journal of Applied Physics, Vol. 115, No. 16, 164503, 28.04.2014.

Research output: Contribution to journalArticle

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