Integrated organic light-emitting device/fluorescence-based chemical sensors

Abstract

A fluorescent chemical sensor platform, integrating an organic light-emitting device ͑OLED͒ light-source with a fluorescent probe, is demonstrated for a subsecond-fast oxygen sensor. The integration results in strong light coupling and negligible heating of the sensor film or analyte. The potential in vivo operation of compact, stand-alone, battery-powered, OLED-based miniaturized sensor arrays for chemical and biological applications is discussed.

Polythiophene‐Fullerene Based Photodetectors: Tuning of Spectral Response and Application in Photoluminescence Based (Bio)Chemical Sensors

“…[7][8][9][10][11][12][13] We believe that integration of organic photodetectors (OPDs) with this -hence an all-organic sensing platform -has the potential to truly enable the development of fl exible, thin, miniature sensor arrays via a facile and low-cost fabrication route. There have been only a few reports on the use of OPDs in PL-based sensors.…”

“…The sensing element usually contains an oxygensensitive dyes, such as Pt or Pd octaethylporphyrin (PtOEP or PdOEP, respectively). [7][8][9][10][11][12][13] The collisions of the dye molecules with O 2 decrease I and τ . [ 9 , 15 , 16 ] Ideally, in a homogeneous matrix, the O 2 concentration can be determined by monitoring τ or the steady-state I using the Stern-Volmer (SV) equation [ 19 ] …”

Data analysis and aging in phosphorescent oxygen-based sensors

“…OLED pixels were fabricated by thermal evaporation of organic layers on ∼150 nm thick ITO, which was treated as previously described [10]. The organic layers consisted of a 5 nm thick CuPc hole injecting layer and a 50 nm thick NPD hole transport layer (HTL).…”

Structurally Integrated Photoluminescence-Based Lactate Sensor Using Organic Light Emitting Devices (OLEDs) as the Light Source

“…The sensor was operated in a "back-detection" geometry, shown in In this work, we report a structurally integrated OLED-based lactate sensor designed towards the development of a multianalyte sensing array. A sensing component was integrated with low-power, thin-layered green Alqs OLEDs as the light source [27]. The advantages of OLED-excited sensors include their compact size, ease of fabrication, simple structure, and low cost.…”