Integrated waveguide sensor utilizing organic photodiodes (pages 344–346)
Bernhard Lamprecht, Elke Kraker, Martin Sagmeister, Stefan Köstler, Nicole Galler, Harald Ditlbacher, Birgit Ungerböck, Tobias Abel and Torsten Mayr
Version of Record online: 22 JUL 2011 | DOI: 10.1002/pssr.201105300
A novel optical sensor platform is presented, combining monolithically integrated ring-like sensor waveguides together with ring-shaped thin-film organic photodiodes (OPDs) on one substrate. 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 a carbon dioxide sensor, utilizing absorbance as the sensing principle.