Photo-current imaging of poly(p-phenylenevinylene) thin film light emitting devices with a laser scanning microscope

F. J. Kao*, L. J. Chang, S. L. Huang, S. A. Chen, K. R. Chuang, W. S. Fann

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations

Abstract

We have observed the poly(p-phenylene vinylene)(PPV) thin film based light emitting devices with a multifunction laser scanning microscope. The spatial distribution of PPV thin film's reflectivity, photoluminescence, and photocurrent are imaged. In addition, site dependent optical density and photocurrent spectra are also measured, which reveal the nature of optical excitations within PPV. The contrast between photoluminescence and photocurrent images is attributed to field induced luminescence quenching under exciton model.1.

Original languageEnglish
Pages (from-to)333-338
Number of pages6
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume3145
DOIs
StatePublished - 1997
EventOptical Probes of Conjugated Polymers - San Diego, CA, United States
Duration: 28 Jul 199730 Jul 1997

Keywords

  • Laser scanning microscopy
  • Photocurrent
  • Photoluminescence
  • PPV

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