Organic SWIR Sensors

Electron and Holes blogger spotted an interesting Laser Focus article on SWIR image sensor made of organic materials. The pixels are based on hybrid diodes with colloidal lead sulfide (PbS) quantum dots. A ternary composite of electron- and hole-conducting organic semiconductor blended with the colloidal QDs to yield highly sensitive SWIR photodiodes.

The devices achieved external quantum efficiencies (EQEs) of up to 51%. With glass-encapsulated hybrid diodes and operating at room temperature, the 256x256 pixel imager is sensitive up to 1.9 µm. Its pixel pitch is 154um. The whole work was done by Siemens, Germany.