Abstract
Amain focus of research on organic semiconductors is their potential application in passive organic radio-frequency identification (RF-ID) tags. First prototypes working at 125 kHz have been shown by industrial research groups1. However, to be commercially viable, the organic RF-ID tag would need to be compatible with the base-carrier frequency of 13.56 MHz (ref. 2). High-frequency operation has been out of reach for devices based on organic semiconducting material, because of the intrinsically low mobility of those materials. Here, we report on a rectifier based on a pentacene diode that can rectify an incoming a.c. signal at 50 MHz. At 14 MHz, a rectified voltage of 11 V for an a.c. voltage with a peak-to-peak amplitude of 36 V has been achieved. On the basis of those results, we estimate the frequency limits of an organic diode showing that even the ultra-high-frequency band at around 800 MHz is within reach.
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Acknowledgements
This work was partially supported by the European-funded Integrated Project POLYAPPLY (IST No. 507143).
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Steudel, S., Myny, K., Arkhipov, V. et al. 50 MHz rectifier based on an organic diode. Nature Mater 4, 597–600 (2005). https://doi.org/10.1038/nmat1434
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DOI: https://doi.org/10.1038/nmat1434