White-emissive tandem-type hybrid organic/polymer diodes with (0.33, 0.33) chromaticity coordinates

Tzung Fang Guo, Ten Chin Wen, Yi Shun Huang, Ming Wei Lin, Chuan Cheng Tsou, Chia Tin Chung

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


This study reports fabrication of white-emissive, tandem-type, hybrid organic/polymer light-emitting diodes (O/PLED). The tandem devices are made by stacking a blue-emissive OLED on a yellow-emissive phenyl-substituted poly(para-phenylene vinylene) copolymer-based PLED and applying an organic oxide/Al/molybdenum oxide (MoO3) complex structure as a connecting structure or charge-generation layer (CGL). The organic oxide/Al/MoO3 CGL functions as an effective junction interface for the transport and injection of opposite charge carriers through the stacked configuration. The electroluminescence (EL) spectra of the tandem-type devices can be tuned by varying the intensity of the emission in each emissive component to yield the visible-range spectra from 400 to 750 nm, with Commission Internationale de l'Eclairage chromaticity coordinates of (0.33, 0.33) and a high color rendering capacity as used for illumination. The EL spectra also exhibit good color stability under various bias conditions. The tandem-type device of emission with chromaticity coordinates, (0.30, 0.31), has maximum brightness and luminous efficiency over 25,000 cd/m2 and -4.2 cd/A, respectively.

Original languageEnglish
Pages (from-to)21205-21215
Number of pages11
JournalOptics Express
Issue number23
Publication statusPublished - 2009

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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