Two‐layer light‐emitting diodes based on sexithiophene and derivatives

作者：Gilles Horowitz, Philippe Delannoy, Habib Bouchriha, Françoise Deloffre, Jean‐Louis Fave, Françis Garnier, Riadh Hajlaoui, Michel Heyman, Fayçal Kouki, Pierre Valat, Véronique Wintgens, Abderrahim Yassar · 发表于：Advanced Materials · 年份：1994 · DOI：10.1002/adma.19940061007 · 被引用次数：110 · 研究领域：Organic Light-Emitting Diodes Research、Organic Electronics and Photovoltaics、Conducting polymers and applications

The performance of oligothiophene‐based organic LEDs can be dramatically improved (by up to four orders of magnitude) by using a two‐layer device made of unsubstituted sexithiophene (6T) and a substituted 6T (see Fig.), although the substituted 6T materials do not produce electroluminescence in single‐layer devices. Yellow emission with a quantum yield of 0.15% has been achieved. magnified image