Miniaturized high-throughput operation systems including
microwell plates, microfluidic devices, Lab-on-Chip (LOC) devices and
low-volume bioreactors have become increasingly important in modern
biotechnology. These systems enable rapid, highly parallelized and automatedscreening and analyses of large numbers of samples. Owing to the non-invasive
nature, high sensitivity and easy implementation of optical monitoring systems
such as lightemitting diodes (LEDs), lasers and photodiodes are widely used as
monitoring devices in these small-scale systems.
As discussed in other reviews, photo-organic electronics,
in contrast to aforementioned conventional optical devices, allow the design ofstructurally integrated miniaturized sensor arrays that provide low-cost,portable and multianalyte detection systems.The simplest form is associated
with front-detection, where the analyte is sandwiched by the organic light
emitting diode (OLED) excitation source and the photodetector. However, the
size of the overall device may be reduced by using a back-to-back orientation
or by placing the OLED light source next to the photodetector.
