Photocurrent in the Polyfluorene Copolymer/PTCDI Heterojunction Enhanced by Reabsorption of Fluorescence Emission

Dmitriy A. Lypenko; Alexey E. Aleksandrov; Artem V. Dmitriev; Anton A. Yakimanskiy; Ilya E. Kolesnikov; Tatiana G. Chulkova; Alexander V. Yakimansky; Alexey R. Tameev

doi:10.1007/s10118-024-3231-4

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Photocurrent in the Polyfluorene Copolymer/PTCDI Heterojunction Enhanced by Reabsorption of Fluorescence Emission

RESEARCH ARTICLE | Updated：2024-12-03

- Photocurrent in the Polyfluorene Copolymer/PTCDI Heterojunction Enhanced by Reabsorption of Fluorescence Emission
- Chinese Journal of Polymer Science Vol. 42, Issue 12, Pages: 1941-1947(2024)
- Affiliations：
  
  a.Frumkin Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences, 31/bld.4 Leninskiy Prospect, Moscow 119071, Russia
  b.Institute of Macromolecular Compounds of the Russian Academy of Sciences, 31 Bolshoi pr. VO, Saint Petersburg 199004, Russia
  c.Saint Petersburg State University, 7/9 Universitetskaya nab., Saint Petersburg 199034, Russia
- Author bio：
  
  tameev@elchem.ac.ru
- Funds：
- DOI：10.1007/s10118-024-3231-4
  CLC：
- Received：08 June 2024，
  
  Revised：2024-08-28，
  
  Accepted：05 September 2024，
  
  Online First：29 October 2024，
  
  Published：01 December 2024
- Accepted：
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Lypenko, D. A.; Aleksandrov, A. E.; Dmitriev, A. V.; Yakimanskiy, A. A.; Kolesnikov, I. E.; Chulkova, T. G.; Yakimansky, A. V.; Tameev, A. R. Photocurrent in the polyfluorene copolymer/PTCDI heterojunction enhanced by reabsorption of fluorescence emission. Chinese J. Polym. Sci. 2024, 42, 1941–1947

Dmitriy A. Lypenko, Alexey E. Aleksandrov, Artem V. Dmitriev, et al. Photocurrent in the Polyfluorene Copolymer/PTCDI Heterojunction Enhanced by Reabsorption of Fluorescence Emission[J]. Chinese Journal of Polymer Science, 2024, 42(12): 1941-1947.
Lypenko, D. A.; Aleksandrov, A. E.; Dmitriev, A. V.; Yakimanskiy, A. A.; Kolesnikov, I. E.; Chulkova, T. G.; Yakimansky, A. V.; Tameev, A. R. Photocurrent in the polyfluorene copolymer/PTCDI heterojunction enhanced by reabsorption of fluorescence emission. Chinese J. Polym. Sci. 2024, 42, 1941–1947 DOI： 10.1007/s10118-024-3231-4.

Dmitriy A. Lypenko, Alexey E. Aleksandrov, Artem V. Dmitriev, et al. Photocurrent in the Polyfluorene Copolymer/PTCDI Heterojunction Enhanced by Reabsorption of Fluorescence Emission[J]. Chinese Journal of Polymer Science, 2024, 42(12): 1941-1947. DOI： 10.1007/s10118-024-3231-4.

摘要

Energy diagram of the studied devices and transport of photogenerated charge carriers. HTL and ETL are hole and electron transport layers

respectively; PL is photoluminescence; CPF is copolyfluorene with dicyanostilbene (FFCN) or dicyanophenatrene (PFCN). CPF and PTCDI were used as photoactive materials. The structure of the PFCN copolymer (top).

Abstract

Copolyfluorenes are of great interest due to their ability to form thin films with tunable optical and electrical properties. In this paper

copolymers of polyfluorene with electron withdrawing dicyanostilbene and dicyanophenanthrene moieties were synthesized; their thin films were characterized by electron spectroscopy

cyclic voltammetry

electrical

and photoelectrical measurements. The mobility of charge carriers in the copolymers was measured for the first time

with the acceptor components providing balanced electron and hole mobilities of the order of 10

−6

·V

−1

·s

−1

. Photodetectors based on the copolymer/PTCDI heterojunction exhibited the photoresponse band extended into the green region due to the absorption of PTCDI and an increased photocurrent in the UV-blue absorption band of the copolymer

which is related to the absorption of photoluminescent emission of the copolymers in PTCDI. The presented approach to improving the performance of a polymer-based photodetector is promising in organic optoelectronics.

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references

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