Integrated waveguide sensor utilizing organic photodiodes |
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| Authors: | Bernhard Lamprecht Elke Kraker Martin Sagmeister Stefan Köstler Nicole Galler Harald Ditlbacher Birgit Ungerböck Tobias Abel Torsten Mayr |
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| Institution: | 1. Joanneum Research – Institute for Surface Technologies and Photonics, Franz‐Pichler Stra?e 30, 8160 Weiz, Austria;2. Institute of Physics, Karl Franzens University Graz, Universit?tsplatz 5, Graz 8010, Austria;3. Institute of Analytical Chemistry and Food Chemistry, Graz University of Technology, Stremayrgasse 9, Graz 8010, Austria |
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| Abstract: | We present a novel optical sensor platform, combining monolithically integrated ring‐like sensor waveguides together with ring‐shaped thin‐film organic photodiodes (OPDs) on one substrate. The OPDs serve as integrated light detectors, simplifying the detection system by minimizing the number of required optical components. The waveguide structures, including a means of coupling light in and out of the waveguides, serve as sensing elements. The functionality of the concept is demonstrated by an integrated carbon dioxide sensor, utilizing absorbance as sensing principle. The integrated optical sensor platform is suitable for the parallel detection of multiple parameters in a single sensor chip using sensor arrays. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) |
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| Keywords: | optical sensors organic photodiodes waveguides |
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