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Photodetector behaviour in polyfluorene-based Polymer Light Emitting Diodes (PLEDs)

J. L. ALONSO1,* , J. C. FERRER1, R. MALLAVIA2, S. FERNÁNDEZ DE ÁVILA1

Affiliation

  1. Dpto. de Física y Arquitectura de Computadores, Universidad Miguel Hernández, Av. de la Universidad s/n, Ed. Torrepinet, 03202, Elche, Alicante, Spain
  2. Instituto de Biología Molecular y Celular. Universidad Miguel Hernández, Av. de la Universidad s/n, Ed. Torregaitán, 03202, Elche, Alicante, Spain

Abstract

Polymeric light emitting diodes (PLEDs) as potential light detector devices, have been studied. Two different polymers: one commercially available Poly(9,9-dihexilfluorene) (PFC6) and other one -synthesized specially for optoelectronic applications- Poly(9,9-bis(6’-brominehexil)-fluorene phenylene) (PFBr2), have been used as active layer for the diodes. A significant improvement of the photocurrent is observed in the new synthesized polymer by comparison with the commercial one. Diodes made with PFBr2 show a linear dependence of the photocurrent generation on the incident light power, but the stability of the photocurrent for different bias encountered in these diodes is not as good as the typical level found in inorganic ones..

Keywords

Photodiode, Polymer, Polyfluorene, Photocurrent, Spin-coating.

Submitted at: Nov. 9, 2007
Accepted at: Jan. 18, 2008

Citation

J. L. ALONSO, J. C. FERRER, R. MALLAVIA, S. FERNÁNDEZ DE ÁVILA, Photodetector behaviour in polyfluorene-based Polymer Light Emitting Diodes (PLEDs), Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 1, pp. 169-173 (2008)