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Proceedings Paper

Cathodoluminescence and electroluminescence from multi-layered organic structures induced by field electron emission from carbon nanotubes
Author(s): Alexander A. Kuznetzov; Alexander A. Zakhidov; Raquel Ovalle; Rashmi Nanjundaswami; Christopher Williams; Mei Zhang; Sergey B. Lee; John Ferraris; Anvar A. Zakhidov
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Paper Abstract

We report the observation of cathodoluminescence (CL) of organic multilayers of tris-(8-hydroxyquinoline) aluminium (Alq3) and 2- (4biphenyl)-5-(4-t-butylphenyl)-1,3,4-oxadiazole (PBD) deposited on ITO-coated glass, with and without hole transport layer and compare it with electroluminescence (EL) from similar devices. Excitation of the CL of such multilayer organic anodes was accomplished by low energy electrons field emitted by single walled carbon nanotube cathodes. The dependence of CL spectrum and intensity on voltage (V), current (I), type of transport layer and the cathode-anode geometry has been studied. We propose carbon nanotubes as efficient cathodes for stable CL emission from multi-layer anodes at small cathode-anode separations. The role of hole-transport layer is also discussed.

Paper Details

Date Published: 9 October 2005
PDF: 8 pages
Proc. SPIE 5937, Organic Light-Emitting Materials and Devices IX, 593720 (9 October 2005); doi: 10.1117/12.617876
Show Author Affiliations
Alexander A. Kuznetzov, The Univ. of Texas at Dallas (United States)
Alexander A. Zakhidov, Moscow State Univ. (Russia)
Raquel Ovalle, The Univ. of Texas at Dallas (United States)
Rashmi Nanjundaswami, The Univ. of Texas at Dallas (United States)
Christopher Williams, The Univ. of Texas at Dallas (United States)
Mei Zhang, The Univ. of Texas at Dallas (United States)
Sergey B. Lee, The Univ. of Texas at Dallas (United States)
John Ferraris, The Univ. of Texas at Dallas (United States)
Anvar A. Zakhidov, The Univ. of Texas at Dallas (United States)


Published in SPIE Proceedings Vol. 5937:
Organic Light-Emitting Materials and Devices IX
Zakya H. Kafafi; Paul A. Lane, Editor(s)

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