OLED-OPD Matrix for Sensing on a Single Flexible Substrate
- Resource Type
- Periodical
- Authors
- Titov, I.; Kopke, M.; Schneidewind, N.C.; Buhl, J.; Murat, Y.; Gerken, M.
- Source
- IEEE Sensors Journal IEEE Sensors J. Sensors Journal, IEEE. 20(14):7540-7547 Jul, 2020
- Subject
- Signal Processing and Analysis
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Robotics and Control Systems
Organic light emitting diodes
Fluorescence
Substrates
Microfluidics
Sensor phenomena and characterization
Indium tin oxide
OLED
OPD
flexible
sensor
fluorescence
- Language
- ISSN
- 1530-437X
1558-1748
2379-9153
Integration of organic light emitting diodes (OLEDs) and organic photodetectors (OPDs) on flexible plastic substrates promises compact and low-cost optical detection units for multiplex sensors. These units may be laminated to a microfluidic system for sensing applications in a liquid. Here, a $6\times 6$ element matrix of alternating blue OLEDs and OPDs is demonstrated on a single flexible plastic substrate. The devices are fabricated by masked thermal evaporation on a $200~\mu \text{m}$ thick polyethylene terephthalate (PET) foil. The individual device size is 1 mm $\times 1$ mm. Both OLEDs and OPDs are demonstrated to work. The spectral characteristics are shown to be suitable for fluorescence measurements. Signals from fluorescence-labeled spots above the OPDs under OLED excitation are investigated. Successful operation of the OLED-OPD matrix for reflection measurement is demonstrated.