Efficient light emitting diodes from ternary blends of PPV-based copolymers


Cirpan A., Aroguz Z. A. , Karasz F. E.

JOURNAL OF APPLIED POLYMER SCIENCE, vol.102, no.3, pp.2509-2511, 2006 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 102 Issue: 3
  • Publication Date: 2006
  • Doi Number: 10.1002/app.24650
  • Title of Journal : JOURNAL OF APPLIED POLYMER SCIENCE
  • Page Numbers: pp.2509-2511

Abstract

Light emitting diodes (LEDs) were prepared using ternary blends of block copolymers emitting in the blue (I and II) and green (III) regime. These blends were studied in terms of their absorbance, photoluminescence (PL), and electroluminescence (EL) spectra. The PL spectra in dilute solution and in the solid state were compared. Forster energy transfer from I and II to III was studied in the solid state. The EL device made using a ternary blend with the ratio (1 : 1 : 1) showed the highest EL quantum efficiency. Differential scanning calorimetry (DSC) measurements have been made to investigate the phase separation in these copolymer blends. (c) 2006 Wiley Periodicals, Inc.