Steady state photoconductivity of a polymer blend

J. Y. Park, H. M. Le, Gyu-Tae Kim, H. Park, Y. W. Park, I. N. Kang, D. H. Hwang, H. K. Shim

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The spectral responses of steady state photoconductivity of a polymer blend, poly[2-methoxy,5-(2′-ethyl-hexoxy)-1,4-phenylene vinylene] (MEH-PPV) and poly[1,3-propanedioxy-1,4-phenylene-1,2-ethenyllene-(2,5-bis(trimethylsilyl)-1, 4-phenylene)-1,2-etheny lene-1,4-phenylene] (called B-polymer) are investigated. Two peaks of photocurrent(PC) at 2.16 eV and 3.01 eV are observed under continuous illumination. The peak at 3.01 eV is rather broad and has a strong polarity dependence on the applied voltage, which could be due to the rectified microjunction formation in the polymer blend. The incident beam intensity dependences of the two peaks in PC are Ipc ∝ Iα with α = 1.05. It indicates that the monomolecular recombination kinetics is important in this polymer blend. The observed spectral response of PC is discussed in comparison with the optical absorption as well as the photoluminescence spectra reported earlier in the same polymer blend.

Original languageEnglish
Pages (from-to)1239-1240
Number of pages2
JournalSynthetic Metals
Volume85
Issue number1-3
Publication statusPublished - 1997 Mar 15
Externally publishedYes

Keywords

  • Electroluminescence
  • National center for natural science and technology
  • Photoconductivity
  • Poly(phenylene vinylene) and derivatives

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Polymers and Plastics

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  • Cite this

    Park, J. Y., Le, H. M., Kim, G-T., Park, H., Park, Y. W., Kang, I. N., Hwang, D. H., & Shim, H. K. (1997). Steady state photoconductivity of a polymer blend. Synthetic Metals, 85(1-3), 1239-1240.