High-sensitive near-infrared organic spectroscopic photodetectors for food quality sensing (Conference Presentation)

Robert Brückner; Matthias Jahnel; David Wynands; Rico Meerheim; Ronny Timmreck; Karl Leo

doi:10.1117/12.2322354

18 September 2018 High-sensitive near-infrared organic spectroscopic photodetectors for food quality sensing (Conference Presentation)

Robert Brückner, Matthias Jahnel, David Wynands, Rico Meerheim, Ronny Timmreck, Karl Leo

Author Affiliations +

Proceedings Volume 10738, Organic and Hybrid Sensors and Bioelectronics XI; 107380K (2018) https://doi.org/10.1117/12.2322354
Event: SPIE Organic Photonics + Electronics, 2018, San Diego, California, United States

Abstract

We demonstrate a new device concept for organic photodetectors to overcome the lack of organic materials efficiently absorbing in the near-infrared spectral region. We exploit the properties of the weakly absorbing charge transfer state formed at the donor-acceptor interface in a bulk hetero junction photovoltaic device implemented into a specially designed optical microcavity [1]. This enables us to spectrally selective detect light with wavelengths up to 1700 nm. Based on this technological platform, we build a miniaturized 16-channel spectrometer without the need for further optical elements such as gratings or prisms for food screening applications and liquid analysis. With very high and competitive detectivities, we are entering the Indium-Gallium-Arsenide dominated world and show a route towards low-cost applications and novel devices. [1] B. Siegmund et al. Nature Communications 8, 15421 (2017)

Conference Presentation

Citation Download Citation

Robert Brückner, Matthias Jahnel, David Wynands, Rico Meerheim, Ronny Timmreck, and Karl Leo "High-sensitive near-infrared organic spectroscopic photodetectors for food quality sensing (Conference Presentation)", Proc. SPIE 10738, Organic and Hybrid Sensors and Bioelectronics XI, 107380K (18 September 2018); https://doi.org/10.1117/12.2322354

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