Figure 1
(a) A cross-section of the phosphorescent green OLED device structure in our display. (b) An exploded schematic view of our OLED display-based point-of-care test configuration, combining green OLED technology for optical excitation, photodiode, fluorescent biorecognition layer and optical filters for high-sensitivity fluorescence analysis and detection of disease biomarkers. (c) A photograph of our 515 nm, 5 mm2 bottom emitting green OLED display test structure used for this study. (d) A small display used to provide instructions, status, or test results. (e) Our prototype electronics test board containing a microcontroller and Op Amp-based charge integrated readout circuit which provides a ramp time that inversely correlates with fluorescent biorecognition signal intensity. (f) Our hand-held 3D printed point-of-care prototype, which aligns the fluorescent biorecognition site on the microscope slide with the OLED emitter, face-to-face excitation and emission optical filters, biorecognition site and photodiode.
