The exciplex emission of organic light emitting diodes with 5, 6, 11, 12-tetraphenylnaphthacene (Rubrene)-doped hole transport layer

Ching-Huei Tseng; Uerng-Yih Ueng; Meiso Yokoyama

doi:doi:10.1051/jp4:2006132067

Issue		J. Phys. IV France Volume 132, March 2006


Page(s)		351 - 354
DOI		https://doi.org/10.1051/jp4:2006132067
Published online		11 March 2006

10th International Conference on the Formation of Semiconductor Interfaces
C. Girardeaux, et al.
J. Phys. IV France 132 (2006) 351-354
DOI: 10.1051/jp4:2006132067

The exciplex emission of organic light emitting diodes with 5, 6, 11, 12-tetraphenylnaphthacene (Rubrene)-doped hole transport layer

Ching-Huei Tseng¹, Uerng-Yih Ueng¹ and Meiso Yokoyama²

¹ Department of Electrical Engineering, National Sun Yat-Sen University Kaohsiung, Taiwan, R.O.C
² Department of Electronic Engineering, I-Shou University, Kaohsiung, Taiwan, R.O.C

Abstract
Exciplex electroluminescence of indium-tin-oxide glass (ITO)/[ 4 $^\prime$ ,4 $^{\prime\prime}$ -tris[3-methylphenyl (phenyl) amino]triphenylamine] (m-MTDATA)/[Naphthyl-substituted benzidine derivative] (NPB)/NPB:rubrene/BCP/LiF/Al devices have been investigated. The ITO/MTDATA/NPB/NPB:Rubrene/BCP/LiF/Al devices show emission color adiustable by the hybrid exciplex interaction of Rubrene with NPB, and this exciplex becomes the primary recombination center at a critical Rubrene doping concentration. We obtained its emission was green-white light and the green emission is exciplex emission of the binary-blend NPB:rubrene layer. It is demonstrated at the PL spectra.