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

Fu-Jen Kao; L. J. Chang; Sheng-Lung Huang; Shaw-An Chen; Kuen-Ru Chuang; Wunshain S. Fann

doi:10.1117/12.279285

1 December 1997 Photocurrent imaging of poly(p-phenylenevinylene) thin film light-emitting devices with a laser scanning microscope

Fu-Jen Kao, L. J. Chang, Sheng-Lung Huang, Shaw-An Chen, Kuen-Ru Chuang, Wunshain S. Fann

Author Affiliations +

Proceedings Volume 3145, Optical Probes of Conjugated Polymers; (1997) https://doi.org/10.1117/12.279285
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

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.

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Fu-Jen Kao, L. J. Chang, Sheng-Lung Huang, Shaw-An Chen, Kuen-Ru Chuang, and Wunshain S. Fann "Photocurrent imaging of poly(p-phenylenevinylene) thin film light-emitting devices with a laser scanning microscope", Proc. SPIE 3145, Optical Probes of Conjugated Polymers, (1 December 1997); https://doi.org/10.1117/12.279285

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