Report on Optical Absorption, Steady-state Emission and Time-resolved Emission Spectroscopy of Carbazole-based Conjugated Polymers

Authors

  • R. K. Dey The University of Western Ontario, London, Ontario, Canada
  • M. A. H. Chowdury Shah Jalal University of Science and Technology, Sylhet
  • N. Chawdhury Shah Jalal University of Science and Technology
  • A. P. Monkman University of Durham, England

DOI:

https://doi.org/10.3329/jsr.v3i1.4666

Keywords:

Time resolved emission spectroscopy, Carbazole, Conjugated polymers.

Abstract

Opto-electronic properties of three new carbazole based co-polymers were investigated. The decay kinetics of triplet emission of the co-polymers was observed. Several findings such as optical band-gap, singlet to singlet transition energies, triplet to singlet transition energies, exchange energies (?EST) have been presented. In comparison to the other material carbazole-oxadiazole based polymer with OMe, P1, H21C10, P2 and H12C10O, P3 exchange energy is below 0.5 eV and triplet energy is significantly higher. The energy gaps between singlet and triplet excited states are 0.44-0.47 eV. From decay kinetics the triplet excited state life-times were found to be several orders of ms at 10-13 K that reduces to less than 3 ms at room temperature.

Keywords: Time resolved emission spectroscopy; Carbazole; Conjugated polymers.

© 2011 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved.

doi:10.3329/jsr.v3i1.4666                J. Sci. Res. 3 (1), 13-24 (2011)

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Author Biographies

R. K. Dey, The University of Western Ontario, London, Ontario, Canada

PhD Student

Dept of Physics and Astronomy

The University of Western Ontario, London, Ontario, Canada

M. A. H. Chowdury, Shah Jalal University of Science and Technology, Sylhet

Department of Physics

Shah Jalal University of Science and Technology

Sylhet, Bangladesh

N. Chawdhury, Shah Jalal University of Science and Technology

Professor

Dept of Physics

Shahjalal University of Science and Technology

A. P. Monkman, University of Durham, England

Professor

Department of Physics, University of Durham, England.

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Published

2010-12-17

How to Cite

Dey, R. K., Chowdury, M. A. H., Chawdhury, N., & Monkman, A. P. (2010). Report on Optical Absorption, Steady-state Emission and Time-resolved Emission Spectroscopy of Carbazole-based Conjugated Polymers. Journal of Scientific Research, 3(1), 13. https://doi.org/10.3329/jsr.v3i1.4666

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Section

Section A: Physical and Mathematical Sciences