TY - JOUR
T1 - Pulse Oximetry Using Organic Optoelectronics under Ambient Light
AU - Han, Donggeon
AU - Khan, Yasser
AU - Ting, Jonathan
AU - Zhu, Juan
AU - Combe, Craig
AU - Wadsworth, Andrew
AU - McCulloch, Iain
AU - Arias, Ana C.
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was partially supported by the National Science Foundation under Grant No. 1610899 and Intel. The authors thank Dr. Igal Deckman, Dr. Balthazar Lechene, and Dr. Adrien Pierre for helpful technical discussions.
PY - 2020/3/6
Y1 - 2020/3/6
N2 - Light absorption in oxygenated and deoxygenated blood varies appreciably over the visible and near-infrared spectrum. Pulse oximeters use two distinct wavelengths of light to measure oxygen saturation SpO2 of blood. Currently, light-emitting diodes (LEDs) are used in oximeters, which need additional components to drive them and negatively impact the overall size of the sensor. In this work, an ambient light oximeter (ALO) is demonstrated, which can measure photoplethysmography signals and SpO2 using various kinds of ambient light, avoiding the use of LEDs. Spectral filters are combined with organic photodiodes to create the ALO with sensitivity peaks at green (525 nm), red (610 nm), and near-infrared (740 nm) wavelengths. Finally, the wearable ALO is used to measure photoplethysmography signals and SpO2 on the index finger in different indoor and outdoor lighting conditions and the measurements are validated with commercial pulse oximeters under normal and ischemic conditions.
AB - Light absorption in oxygenated and deoxygenated blood varies appreciably over the visible and near-infrared spectrum. Pulse oximeters use two distinct wavelengths of light to measure oxygen saturation SpO2 of blood. Currently, light-emitting diodes (LEDs) are used in oximeters, which need additional components to drive them and negatively impact the overall size of the sensor. In this work, an ambient light oximeter (ALO) is demonstrated, which can measure photoplethysmography signals and SpO2 using various kinds of ambient light, avoiding the use of LEDs. Spectral filters are combined with organic photodiodes to create the ALO with sensitivity peaks at green (525 nm), red (610 nm), and near-infrared (740 nm) wavelengths. Finally, the wearable ALO is used to measure photoplethysmography signals and SpO2 on the index finger in different indoor and outdoor lighting conditions and the measurements are validated with commercial pulse oximeters under normal and ischemic conditions.
UR - http://hdl.handle.net/10754/662095
UR - https://onlinelibrary.wiley.com/doi/abs/10.1002/admt.201901122
UR - http://www.scopus.com/inward/record.url?scp=85081374039&partnerID=8YFLogxK
U2 - 10.1002/admt.201901122
DO - 10.1002/admt.201901122
M3 - Article
SN - 2365-709X
SP - 1901122
JO - Advanced Materials Technologies
JF - Advanced Materials Technologies
ER -