Vein detection with near‐infrared organic photodetectors for biometric authentication

• DOI: 10.1002/jsid.891
• Publication Date: 2020-04-08T14:06:35Z
• Authors: Daniel Tordera; Bart Peeters; Ezequiel Delvitto; Santhosh Shanmugam; Joris Maas; Joris de Riet; Roy Verbeek; Robert van de Laar; Thijs Bel; Gerard Haas; Leslye Ugalde; Albert van Breemen; Ilias Katsouras; Auke Jisk Kroneme...; Hylke Akkerman; Eric Meulenkamp; Gerwin Gelinck
• Keywords: near-infrared organic photodiodes; vein detection; biometric authentication; large-area photodetector arrays; 01 natural sciences; 0104 chemical sciences

AbstractWe combine a low dark current and high‐detectivity near‐infrared (NIR)‐sensitive organic photodetector with a high‐resolution 508 pixels per inch (ppi) oxide thin‐film transistor (TFT) backplane to create a large‐area thin NIR detector, using processes that are compatible with flat‐panel display fabrication. The detector is characterized showing high uniformity and linearity. With the use of a NIR light source, the detector is capable of imaging the (pattern of) veins under the skin in reflection, leading to improved biometric authentication.