Sticker-Type Hybrid Photoplethysmogram Monitoring System Integrating CMOS IC With Organic Optical Sensors

Lee, Byoung Hun; Lee, Hyeonwoo; Jang, Jongsoo; Lee, Ji Hee; Kim, Minseo; Lee, Jae-Hyuk; Kim, Hyunki; Yoo, Seunghyup; Yoo, Hoi‐Jun

doi:10.1109/jetcas.2016.2630301

Cited by 29 publications

(22 citation statements)

References 20 publications

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“…The low power operation of the proposed OPO sensor (= PO0) is well illustrated in a comparison experiment carried out with a homemade pulse oximetry sensor based on discrete R- and G-LEDs and a Si PD (= PO1), and a commercially available off-the-shelf reflective PO sensor (SFH7050, Osram Sylvania Inc.) (= PO2), the same OPO sensor as the proposed one except for larger dimension and linear arrangement of the OLEDs with an OPD placed between them, as shown in the inset of Fig. 3B (= PO3) ( 14 ). Even in consideration of room for further optimization for each type of sensor, the order-of-magnitude difference in driving power measured for the similar level of I PH demonstrates the advantage of the proposed OPO sensors.…”

Section: Resultsmentioning

confidence: 99%

Toward all-day wearable health monitoring: An ultralow-power, reflective organic pulse oximetry sensing patch

et al. 2018

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Section: Resultsmentioning

confidence: 99%

Toward all-day wearable health monitoring: An ultralow-power, reflective organic pulse oximetry sensing patch

et al. 2018

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“…c) Photograph of an reflection (R‐) type organic pulse oximetry sensor patch integrated with complementary metal–oxide–semiconductor (CMOS) circuitry developed by Lee et al Comparison of extracted SpO 2 values against a reference commercial device is also shown at the bottom. Reproduced with permission 129. Copyright 2017, IEEE.…”

Section: Beyond Displays: Oleds For Wearable Healthcarementioning

confidence: 99%

“…After these seminal works, Lee et al presented a system that contained an organic pulse oximetry (OPO) sensor head, a custom‐designed CMOS IC chip, and a button‐type battery all on‐board for a patch‐type implementation (Figure 8c). 129 The patch was based on a 5.5 cm × 2.5 cm polyethylene terephthalate film. It had small‐molecular OLEDs with green and red phosphorescent emitters for efficient operation.…”

Section: Beyond Displays: Oleds For Wearable Healthcarementioning

confidence: 99%

Organic Light‐Emitting Diodes: Pushing Toward the Limits and Beyond

et al. 2020

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Organic light‐emitting diodes (OLEDs) are established as a mainstream light source for display applications and can now be found in a plethora of consumer electronic devices used daily. This success can be attributed to the rich luminescent properties of organic materials, but efficiency enhancement made over the last few decades has also played a significant role in making OLEDs a practically viable technology. This report summarizes the efforts made so far to improve the external quantum efficiency (EQE) of OLEDs and discusses what should further be done to push toward the ultimate efficiency that can be offered by OLEDs. The study indicates that EQE close to 58% and 80% can be within reach without and with additional light extraction structures, respectively, with an optimal combination of cavity engineering, low‐index transport layers, and horizontal dipole orientation. In addition, recent endeavors to identify possible applications of OLEDs beyond displays are presented with emphasis on their potential in wearable healthcare, such as OLED‐based pulse oximetry as well as phototherapeutic applications based on body‐attachable flexible OLED patches. OLEDs with fabric‐like form factors and washable encapsulation strategies are also introduced as technologies essential to the success of OLED‐based wearable electronics.

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“…PPG sensors deliver promising future thanks to the application in many clinical applications, such as pulse oximetry, heart rate, and blood pressure. [ 127–130 ] PPG sensors are commonly comprised of two components: a light‐emitting diode (LED) to illuminate the tissue, and a photodetector to monitor the variations of light intensity related to changes of the blood volume in arteries. PPG sensors can be classified as transmission mode and reflectance mode.…”

Section: Applications Of Broadband Organic Photodetectors In Sensorsmentioning

confidence: 99%

Recent Progress on Broadband Organic Photodetectors and their Applications

Zhao

Niu

et al. 2020

Laser & Photonics Reviews

204

158

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As a promising candidate for next-generation photodetectors, organic photodetectors (OPDs) outperform the commercial inorganic photodetectors in terms of solution and large-area processability, mechanical flexibility, tunable spectral response range, low-cost manufacturing, and light weight. The OPDs with broadband spectral response attract an extensive attention due to their potential in wide application fields, such as flexible image sensing, surveillance, and health monitoring. In this review, recent advances in broadband OPDs are summarized as two sections: i) Photodiode type OPDs (PD-OPDs) based on thick-film strategy, ternary strategy, interfacial engineering, and multilayered strategy. ii) Photomultiplication type OPDs (PM-OPDs) with traps in active layer, traps in interfacial layer, and charge blocking layer. Some real applications on image sensors and photoplethysmography (PPG) sensors are also introduced on the basis of broadband OPDs. New insights on developing the broadband OPDs are put forward for improvement of broadband OPDs.

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Sticker-Type Hybrid Photoplethysmogram Monitoring System Integrating CMOS IC With Organic Optical Sensors

Cited by 29 publications

References 20 publications

Toward all-day wearable health monitoring: An ultralow-power, reflective organic pulse oximetry sensing patch

Toward all-day wearable health monitoring: An ultralow-power, reflective organic pulse oximetry sensing patch

Organic Light‐Emitting Diodes: Pushing Toward the Limits and Beyond

Recent Progress on Broadband Organic Photodetectors and their Applications

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