Solution-Processed Organic UV-Sensitive Neuromorphic Sensors for Healthy Protection Application

Area of Science:

• Materials Science
• Biomedical Engineering
• Organic Electronics

Background:

• Ultraviolet (UV) radiation exacerbates systemic lupus erythematosus (SLE) flare-ups.
• Current UV detectors lack personalization for cumulative damage and individual sensitivity in SLE patients.
• Personalized UV monitoring is crucial for effective SLE management.

Purpose of the Study:

• To develop a personalized UV monitoring system for SLE patients.
• To create an organic optoelectronic synaptic device capable of assessing UV damage and providing early warnings.
• To address the unmet clinical need for proactive UV protection in SLE management.

Main Methods:

• Engineered a poly(amic acid)/HfO2 heterogeneous interface for an organic optoelectronic synaptic device.
• Integrated "sensing-storage-computation" functionalities mimicking biological responses.
• Utilized gate voltage for dynamic tuning of the optical response threshold.

Main Results:

• Achieved high device performance: mobility (27.5 cm2V-1s-1), responsivity (5.9 × 105 AW-1), detectivity (4.4 × 1016 Jones).
• Demonstrated device stability (>5,000 cycles) and ability to mimic UV damage accumulation.
• Successfully generated timely warnings before UV exposure reached SLE flare-up thresholds.

Conclusions:

• The developed device enables precise UV damage assessment and personalized early warning for SLE patients.
• This neuromorphic device offers a novel strategy for proactive UV protection and autoimmune disease management.
• The technology expands the application of organic optoelectronics in clinical settings.