Organic photodiode for detection of herbicides in water using microalgal photosynthesis

Abstract : The growing interest for monitoring the quality of water has triggered the need of fast, portable and cheap detection systems. To answer this problematic, we developed a lab on a chip for herbicide detection based on micro algal photosynthesis. A blue organic light-emitting diode is used as the excitation source while the resulting algae luminescence is monitored using an organic photodiode (OPD). During the OPD optimization process, a correlation between fullerene acceptor concentration and dark current was supposed. Using a blend of DTS(PTTh2)2:PC60BM without interfacial layers result in dark current lower than 10-6 mA/cm2 at-2 V and EQE higher than 50% in the region of interest.
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Submitted on : Wednesday, November 9, 2016 - 2:49:51 PM
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Vincent Ventalon, Fadhila Sekli-Belaidi, R. Izquierdo, P. Juneau, Aliki Tsopela, et al.. Organic photodiode for detection of herbicides in water using microalgal photosynthesis . IEEE-NMDC 2016 , Oct 2016, toulouse, France. ⟨hal-01394634⟩

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