Abstract
This study proposes a fully integrated optical sensing platform based on photoluminescence lifetime measurements, for continuous monitoring of tissue oxygen levels. The platform incorporates silicon light-emitting diodes (SiLEDs), single-photon avalanche diodes (SPADs), and a functionalized phosphorescence layer using platinum octa-ethyl porphyrin (PtOEP). This paper details the characterization of SiLEDs, improvements in the data acquisition system for enhanced time resolution, and the experimental procedure for oxygen detection. The results demonstrate the sensor's sensitivity to oxygen concentrations, particularly below 20%. Stern-Volmer analysis confirms the platform's linearity and sensitivity to oxygen with an R-squared of 0.9330, making it a promising tool for monitoring oxygenation in diverse microenvironments, including tumorous tissues.
| Original language | English |
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| Title of host publication | 2024 IEEE Sensors Applications Symposium (SAS) |
| Publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
| Number of pages | 5 |
| ISBN (Electronic) | 979-8-3503-6925-0 |
| ISBN (Print) | 979-8-3503-6926-7 |
| DOIs | |
| Publication status | E-pub ahead of print - 23 Aug 2024 |
| Event | 2024 IEEE Sensors Applications Symposium - Naples, Italy Duration: 23 Jul 2024 → 25 Jul 2024 https://2024.sensorapps.org |
Publication series
| Name | IEEE Sensors Applications Symposium, SAS |
|---|---|
| Publisher | IEEE |
| Volume | 2024 |
| ISSN (Print) | 2994-9300 |
| ISSN (Electronic) | 2766-3078 |
Conference
| Conference | 2024 IEEE Sensors Applications Symposium |
|---|---|
| Abbreviated title | SAS |
| Country/Territory | Italy |
| City | Naples |
| Period | 23/07/24 → 25/07/24 |
| Internet address |
Keywords / Materials (for Non-textual outputs)
- Implantable oxygen sensor
- SiLED
- SPAD
- Phosphorescence lifetime
- PtOEP
- Phosphorescence Lifetime