Device based on the coupling of an OLED with a photoconductive material.

International audienc

The effect of the active layer thickness on the performance of pentacene-based phototransistors

International audiencen this paper, we discuss the fabrication and characterization of pentacene-basedphototransistors using indium tin oxide as a transparent electrical gate and PMMA as a transparent dielectric gate. The photoelectric properties with different pentacene film thicknesses were characterized under ultraviolet (365 nm) illumination. We observed that for the thinner pentacene films, the threshold voltage upon UV illumination was shifted from its initial value in the dark to a positive voltage of more than 16 V, whereas the shift was only of 3 V for thicker films. Thus, we obtained a higher photosensitivity of 6.5 × 104 for thinner pentacene films, which indicates that the organic thin film transistors could find use in photodetector applications

Organic optocoupler consisting of an optimized blue organic light emitting diode and an organic photoconductor

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Electrical characterizations of a pentacene based thin film transistors under optical excitation.

International audienc

The effect of the organic active layer thickness on the pentacene-based phototransistor performance

International audienc

Device based on the coupling of an OLED with a photoconductive material.

International audienc