Color-Variable Light-Emitting Diode Utilizing Conducting Polymer Containing Fluorescent Dye

作者：Masao Uchida, Yutaka Ohmori, Takanobu Noguchi, Toshihiro Ohnishi, Katsumi Yoshino · 发表于：Japanese Journal of Applied Physics · 年份：1993 · DOI：10.1143/jjap.32.l921 · 被引用次数：98 · 研究领域：Organic Light-Emitting Diodes Research、Conducting polymers and applications、Organic Electronics and Photovoltaics

A color-variable light-emitting diode has been realized utilizing conducting polymer, poly(2,5-dioctyloxy-p-phenylene vinylene) (ROPPV-8), mixed with fluorescent dye, 8-hydroxyquinoline aluminum (Alq3). The electroluminescence of the diode changes from orange to greenish-yellow in color with increasing applied voltage. On the other hand, a light-emitting diode with the two-layer structure of ROPPV-8 and Alq3 shows only light emission from the ROPPV-8 layer. This difference is discussed in terms of the carrier injection process to Alq3.