Solution-processed organic infrared photodetectors operating beyond 1.4 μm for sensitive environmental monitoring.

Organic SWIR photodetectors operating beyond 1.4 μm achieve high sensitivity and cost-effectiveness for environmental monitoring applications.

• Why it matters: Current SWIR imaging technologies are expensive and incompatible with consumer-grade devices, limiting widespread environmental monitoring and nondestructive analysis.
• What they did: Solution-processed organic photodetectors with ultra-narrow bandgaps (0.68-0.94 eV) and high detectivity (up to 4.60 × 10^10 Jones) were integrated with amorphous silicon transistors to create active-matrix SWIR imagers capable of sensing beyond 1.4 μm.
• The result: These imagers successfully monitored oil leaks and classified waste textiles with high accuracy, enabling practical, low-cost environmental sensing and broadening the deployment of SWIR imaging technology.