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Article Dans Une Revue European Physical Journal: Applied Physics Année : 2010

Organic optoelectronic devices-flexibility versus performance

Mohamad Chakaroun
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A. El Amrani
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Bruno Lucas
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Bernard Ratier
Matt Aldissi
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Résumé

In this paper, we discuss the effect of flexible substrates on the characteristics of two organic optoelectronic devices, namely P3HT:PCBM-based photovoltaic bulk heterojunctions and pentacene-based phototransistors. In addition, we have developed anode materials deposited by ion beam sputtering, a technique which satisfies the low temperature deposition requirements associated with the use of plastic substrates. The anode materials consisted of indium tin oxide (ITO) and ITO/metal/ITO tri-layers. The use of tri-layer anodes in P3HT:PCBM-based solar cells resulted in an increase in the fill factor and the power conversion efficiency reached a value of 2% with an ITO(70 nm)/Ag(14 nm)/ITO(70 nm) anode deposited on a polyphthalate carbonate substrate. In the case of phototransistors, a photosensitivity of 1.6 × 10 under illumination at 365 nm (with a power intensity of 7 mW/cm) was obtained in the off-state of the transistor. We have fine-tuned the anode structure and deposition/annealing conditions towards flexible organic devices and optimal device characteristics.

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Dates et versions

hal-00618488 , version 1 (02-09-2011)

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Mohamad Chakaroun, A. El Amrani, Bruno Lucas, Bernard Ratier, Matt Aldissi. Organic optoelectronic devices-flexibility versus performance. European Physical Journal: Applied Physics, 2010, 51 (3), pp.33206. ⟨10.1051/epjap/2010108⟩. ⟨hal-00618488⟩
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