High‐Accuracy Photoplethysmography Array Using Near‐Infrared Organic Photodiodes with Ultralow Dark Current

• DOI: 10.1002/adom.201901989
• Publication Date: 2020-03-16T08:09:57Z
• Authors: Giulio Simone; Daniel Tordera; Ezequiel Delvitto; Bart Peeters; Albert J. J. M. v...; Stefan C. J. Meskers; René A. J. Janssen; Gerwin H. Gelinck
• Keywords: Photoplethysmogram; Photodiode; Pulse Oximetry

Abstract Reflectance oximeters based on organic photodiode (OPD) arrays offer the potential to map blood pulsation and oxygenation via photoplethysmography (PPG) over a large area beyond traditional sensing locations. Here, an reflectance PPG array 16 × OPD pixels is developed. The individual exhibit near‐infrared sensitivity up ≈950 nm low dark current density in order of 10 −6 mA cm −2 . This results high‐quality signals. Analysis full waveform yields insight artery stiffness quality circulation, demonstrating these pulse oximetry heart‐rate calculation.