Polymer layer ordering of polyaniline derivatives in PLED devices: Surface adsorption and characterization

R. C. Advincula, W. Knoll, C. W. Frank, D. Roitman, R. Moon, J. Sheats

研究成果: Article査読

4 被引用数 (Scopus)

抄録

The fabrication and characterization of polyaniline (PANI) derivatives deposited on ITO coated glass is investigated as possible hole injection layers for MEH-PPV based polymer light emitting diode (PLED) devices. This involved multilayer ordering by the alternate polyelectrolyte adsorption of polyaniline and sulfonated poyaniline with an oppositely charged polyelectrolyte from solution. A combination of spectroscopic and microscopic techniques was utilized to determine the layer ordering, fill structure, morphology, and homogeneity. The deposition process generally showed a linear behavior for all pairs as shown by ellipsometry and UV-vis spectroscopy. However, surface plasmon spectroscopy (SPS) and AFM revealed that thicker films are accompanied by increased surface roughness regardless of concentration. Comparison in performance was made between bare ITO and PANI or SPANI coated devices. Initial investigations of PLED performance showed significant improvements in lifetime and efficiency compared to bare ITO.

本文言語English
ページ(範囲)115-120
ページ数6
ジャーナルMaterials Research Society Symposium - Proceedings
488
出版ステータスPublished - 1997
外部発表はい

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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