Sensors (Sep 2013)

Visible Light Communication System Using an Organic Bulk Heterojunction Photodetector

  • Cristina de Dios,
  • Ricardo Vergaz,
  • Eduardo Alonso,
  • Agustín Fernández-Pacheco,
  • José Manuel Sánchez Pena,
  • Beatriz Romero,
  • Belén Arredondo

DOI
https://doi.org/10.3390/s130912266
Journal volume & issue
Vol. 13, no. 9
pp. 12266 – 12276

Abstract

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A visible light communication (VLC) system using an organic bulk heterojunction photodetector (OPD) is presented. The system has been successfully proven indoors with an audio signal. The emitter consists of three commercial high-power white LEDs connected in parallel. The receiver is based on an organic photodetector having as active layer a blend of poly(3-hexylthiophene) (P3HT) and phenyl C61-butyric acid methyl ester (PCBM). The OPD is opto-electrically characterized, showing a responsivity of 0.18 A/W and a modulation response of 790 kHz at −6 V.

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