Exciplex Emission in Heterojunctions of Poly (pyridyl vinylene phenylene vinylene)s and Poly (vinyl carbazole)

Abstract

We present photoluminescence and electroluminescence spectra of heterojunctions formed from poly(vinyl carbazole) (PVK) and poly(pyridyl vinylene phenylene vinylene) (PPyVPV). Bilayers of PVK and PPyVPV show a photoluminescence peak which cannot be assigned to either the PVK or the PPyVPV layer. Absorption spectra show that the additional feature results from an exciplex at the bilayer interface. The electroluminescence spectrum from the heterojunctions is due to exciplex emission, with internal efficiencies of approx. 0.1-0.5%.

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Document Details

Document Type
Technical Report
Publication Date
Sep 20, 1997
Accession Number
ADA330180

Entities

People

  • A. G. Macdiarmid
  • Darren D. Gebler
  • J. W. Blatchford
  • S. W. Jessen
  • Yuanyuan Wang

Organizations

  • Ohio State University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Band Gaps
  • Chemistry
  • Conductive Polymers
  • Current Density
  • Efficiency
  • Electroluminescence
  • Emission
  • Energy
  • Energy Bands
  • Films
  • Heterojunctions
  • Measurement
  • Photoluminescence
  • Polymers
  • Quantum Efficiency
  • Quantum Properties

Fields of Study

  • Materials science

Readers

  • Polymer Science and Technology
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.