Dual-layer light emitting devices based on polymeric Langmuir-Blodgett films

Jung, GY; Pearson, C; Kilitziraki, M; Horsburgh, LE; Monkman, AP; Samuel, IDW; Petty, MC

Abstract

Poly(2-methoxy-5-(2'-ethylhexyloxy)-p-phenylenevinylene) (MEH-PPV) and poly(6-hexylpyridine-2,5-diyl) (PHPY) Langmuir-Blodgett films have been used as emitting layer and electron transporting layer, respectively, in light emitting diodes. The electrical and opto-electrical characteristics of the dual-layer devices have been compared to single layer devices based on MEH-PPV. AC impedance measurements over the frequency range 5 Hz-13 MHz have been used to provide an insight into the electrical equivalent circuit of the devices. The external quantum efficiency of the dual-layer structure was found to be approximately ten times higher than that of the single layer device.

Citation

Jung, G., Pearson, C., Kilitziraki, M., Horsburgh, L., Monkman, A., Samuel, I., & Petty, M. (2000). Dual-layer light emitting devices based on polymeric Langmuir-Blodgett films. Journal of materials chemistry, 10(1), 163-167

• Journal Article Type: Article
• Publication Date: 2000
• Journal: Journal of Materials Chemistry
• Print ISSN: 0959-9428
• Publisher: Royal Society of Chemistry
• Volume: 10
• Issue: 1
• Pages: 163-167
• Keywords: ORGANIC ELECTROLUMINESCENT DIODES; ELECTRON-TRANSPORTING POLYMER; IMPEDANCE SPECTROSCOPY