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Because of its thinness and good flexibility, organic semiconductor devices are widely used in the next generation of wearable electronic products
.
Currently, flexible displays composed of organic light-emitting diodes (LEDs) have been applied to electronic devices such as smart watches and wristbands, which greatly reduces power consumption
.
In addition, by integrating organic LEDs and organic photodetectors, an all-organic photoelectric sensor that can be used for pulse oximetry measurement can be developed
.
This organic optical sensor is very flexible and can monitor the health of the human body for a long time.
It can also reduce discomfort by attaching it directly to the skin
.
However, long-term health monitoring also needs to integrate this ultra-flexible optical device with an energy harvesting power supply to realize the self-powered device
.
Due to the insufficient working stability of ultra-flexible polymer light-emitting diodes in the air, the system-level integration of ultra-flexible optical sensors and power supplies has brought great challenges
.
? Recently, the flexible electronics giant, Takao Someya's research group at the University of Tokyo, Japan has prepared an inverted structure of ultra-flexible polymer light-emitting diode devices, and doped the electron transport layer of the device, which greatly improved the air stability of the device
.
It also integrates light-emitting diodes, organic solar cells and organic photodetectors to build a super-flexible self-powered organic optical system to realize the monitoring of photoplethysmogram
.
The research was published on "Nature Communications" with the title "Self-powered ultraflexible photonic skin for continuous bio-signal detection via air-operation-stable polymer light-emitting diodes"
.
Highlights of the article: 1.
Using PEIE (polyethylenimine ethoxylated) layer doped with 8-quinolinolato lithium (Liq) as the electron transport layer, organic LED devices with an inverted structure were prepared
.
The inherent air stability of the PEIE:Liq layer allows the device without passivation treatment to maintain 70% of the initial brightness after 11.
3 hours of continuous operation in an air environment, which is three times that of traditional polymer light-emitting diodes (PLED)
.
2.
The integrated optical sensor has a high linearity when the light intensity index of the polymer light-emitting diode is 0.
98
.
3.
The organic solar cells in the system show a power conversion efficiency (PCE) of 28.
1% under 1000 lux indoor lighting, which satisfies the work of the entire system
.
? 3.
This ultra-flexible self-powered organic optical system can monitor the human pulse frequency (77 beats/min) within 7 seconds?? Ultra-flexible self-powered physiological signal monitoring system organic semiconductor equipment due to its thinness and good flexibility, It is widely used in the next generation of wearable electronic products
.
Currently, flexible displays composed of organic light-emitting diodes (LEDs) have been applied to electronic devices such as smart watches and wristbands, which greatly reduces power consumption
.
In addition, by integrating organic LEDs and organic photodetectors, an all-organic photoelectric sensor that can be used for pulse oximetry measurement can be developed
.
This organic optical sensor is very flexible and can monitor the health of the human body for a long time.
It can also reduce discomfort by attaching it directly to the skin
.
However, long-term health monitoring also needs to integrate this ultra-flexible optical device with an energy harvesting power supply to realize the self-powered device
.
Due to the insufficient working stability of ultra-flexible polymer light-emitting diodes in the air, it brings great challenges to the system-level integration of ultra-flexible optical sensors and power supplies..
? Recently, the flexible electronics giant, Takao Someya's research group at the University of Tokyo, Japan, prepared an inverted structure of ultra-flexible polymer light-emitting diode devices, and doped the electron transport layer of the device, which greatly improved the air stability of the device
.
It also integrates light-emitting diodes, organic solar cells and organic photodetectors to build a super-flexible self-powered organic optical system to realize the monitoring of photoplethysmogram
.
The research was published on "Nature Communications" with the title "Self-powered ultraflexible photonic skin for continuous bio-signal detection via air-operation-stable polymer light-emitting diodes"
.
Highlights of the article: 1.
Using PEIE (polyethylenimine ethoxylated) layer doped with 8-quinolinolato lithium (Liq) as the electron transport layer, organic LED devices with an inverted structure were prepared
.
The inherent air stability of the PEIE:Liq layer allows the device without passivation treatment to maintain 70% of the initial brightness after 11.
3 hours of continuous operation in an air environment, which is three times that of traditional polymer light-emitting diodes (PLED)
.
2.
The integrated optical sensor has a high linearity when the light intensity index of the polymer light-emitting diode is 0.
98
.
3.
The organic solar cells in the system show a power conversion efficiency (PCE) of 28.
1% under 1000 lux indoor lighting, which satisfies the work of the entire system
.
3.
This super-flexible self-powered organic optical system can monitor the human pulse frequency (77 beats/min) within 7s.
The super-flexible self-powered physiological signal monitoring system
.
Currently, flexible displays composed of organic light-emitting diodes (LEDs) have been applied to electronic devices such as smart watches and wristbands, which greatly reduces power consumption
.
In addition, by integrating organic LEDs and organic photodetectors, an all-organic photoelectric sensor that can be used for pulse oximetry measurement can be developed
.
This organic optical sensor is very flexible and can monitor the health of the human body for a long time.
It can also reduce discomfort by attaching it directly to the skin
.
However, long-term health monitoring also needs to integrate this ultra-flexible optical device with an energy harvesting power supply to realize the self-powered device
.
Due to the insufficient working stability of ultra-flexible polymer light-emitting diodes in the air, the system-level integration of ultra-flexible optical sensors and power supplies has brought great challenges
.
? Recently, the flexible electronics giant, Takao Someya's research group at the University of Tokyo, Japan has prepared an inverted structure of ultra-flexible polymer light-emitting diode devices, and doped the electron transport layer of the device, which greatly improved the air stability of the device
.
It also integrates light-emitting diodes, organic solar cells and organic photodetectors to build a super-flexible self-powered organic optical system to realize the monitoring of photoplethysmogram
.
The research was published on "Nature Communications" with the title "Self-powered ultraflexible photonic skin for continuous bio-signal detection via air-operation-stable polymer light-emitting diodes"
.
Highlights of the article: 1.
Using PEIE (polyethylenimine ethoxylated) layer doped with 8-quinolinolato lithium (Liq) as the electron transport layer, organic LED devices with an inverted structure were prepared
.
The inherent air stability of the PEIE:Liq layer allows the device without passivation treatment to maintain 70% of the initial brightness after 11.
3 hours of continuous operation in an air environment, which is three times that of traditional polymer light-emitting diodes (PLED)
.
2.
The integrated optical sensor has a high linearity when the light intensity index of the polymer light-emitting diode is 0.
98
.
3.
The organic solar cells in the system show a power conversion efficiency (PCE) of 28.
1% under 1000 lux indoor lighting, which satisfies the work of the entire system
.
? 3.
This ultra-flexible self-powered organic optical system can monitor the human pulse frequency (77 beats/min) within 7 seconds?? Ultra-flexible self-powered physiological signal monitoring system organic semiconductor equipment due to its thinness and good flexibility, It is widely used in the next generation of wearable electronic products
.
Currently, flexible displays composed of organic light-emitting diodes (LEDs) have been applied to electronic devices such as smart watches and wristbands, which greatly reduces power consumption
.
In addition, by integrating organic LEDs and organic photodetectors, an all-organic photoelectric sensor that can be used for pulse oximetry measurement can be developed
.
This organic optical sensor is very flexible and can monitor the health of the human body for a long time.
It can also reduce discomfort by attaching it directly to the skin
.
However, long-term health monitoring also needs to integrate this ultra-flexible optical device with an energy harvesting power supply to realize the self-powered device
.
Due to the insufficient working stability of ultra-flexible polymer light-emitting diodes in the air, it brings great challenges to the system-level integration of ultra-flexible optical sensors and power supplies..
? Recently, the flexible electronics giant, Takao Someya's research group at the University of Tokyo, Japan, prepared an inverted structure of ultra-flexible polymer light-emitting diode devices, and doped the electron transport layer of the device, which greatly improved the air stability of the device
.
It also integrates light-emitting diodes, organic solar cells and organic photodetectors to build a super-flexible self-powered organic optical system to realize the monitoring of photoplethysmogram
.
The research was published on "Nature Communications" with the title "Self-powered ultraflexible photonic skin for continuous bio-signal detection via air-operation-stable polymer light-emitting diodes"
.
Highlights of the article: 1.
Using PEIE (polyethylenimine ethoxylated) layer doped with 8-quinolinolato lithium (Liq) as the electron transport layer, organic LED devices with an inverted structure were prepared
.
The inherent air stability of the PEIE:Liq layer allows the device without passivation treatment to maintain 70% of the initial brightness after 11.
3 hours of continuous operation in an air environment, which is three times that of traditional polymer light-emitting diodes (PLED)
.
2.
The integrated optical sensor has a high linearity when the light intensity index of the polymer light-emitting diode is 0.
98
.
3.
The organic solar cells in the system show a power conversion efficiency (PCE) of 28.
1% under 1000 lux indoor lighting, which satisfies the work of the entire system
.
3.
This super-flexible self-powered organic optical system can monitor the human pulse frequency (77 beats/min) within 7s.
The super-flexible self-powered physiological signal monitoring system