Abstract:A uniquely simple approach to increase the intensity of the photoluminescence (PL) of dye‐doped sensor films is demonstrated for oxygen sensors, where the sensor film, i.e., Pt or Pd octaethylporphyrin (PtOEP or PdOEP, respectively)‐doped polystyrene, is additionally doped with small‐size particles that have a high dielectric constant, such as 360 nm‐diameter titania (TiO2) particles. When excited by an organic light emitting device (OLED), the dye PL intensity increases up to ∼ 10 fold, depending on the TiO2 … Show more
“…The substrates were first cleaned with a detergent and organic solvents and then treated in a UV/ozone oven to increase the work function of the ITO and hence facilitate hole injection, as described elsewhere. [39] A 60 nm PEDOT:PSS layer was spin-coated onto the ITO and then baked in air at 120…”
“…The substrates were first cleaned with a detergent and organic solvents and then treated in a UV/ozone oven to increase the work function of the ITO and hence facilitate hole injection, as described elsewhere. [39] A 60 nm PEDOT:PSS layer was spin-coated onto the ITO and then baked in air at 120…”
“…TiO 2 improves EL absorption by PtOEP by increasing scattering within the polystyrene matrix. [ 11 ] Both inorganic LEDs and small-molecule OLEDs were utilized as green excitation sources (emission peak ∼ 525 nm). The LEDs were operated in a pulsed mode (100 μ s pulse width at 50 Hz).…”
A photoluminescence (PL)-based oxygen and glucose sensor utilizing inorganic or organic light emitting diode as the light source, and polythiophene: fullerene type bulk-heterojunction devices as photodetectors, for both intensity and decay-time based monitoring of the sensing element's PL. The sensing element is based on the oxygen-sensitive dye Pt-octaethylporphyrin embedded in a polystyrene matrix.
“…1-10, the OLED-based sensing platform can be easily integrated with common substrates and miniaturized sensing structures. Our group has recently demonstrated that OLEDs are promising light sources for a uniquely simple structurally integrated PL-based sensor platform that includes miniaturized sensor arrays for high throughput, multianalyte analysis [10,11,[81][82][83][84][85][86].…”
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