- Examples of applications
- Organic Photodiodes
Organic photo-sensors can be developed for applications that could not be realized with conventional inorganic photo-sensors.
Features of OPD Technology
Organic photo- sensor has the following advantages over conventional inorganic photo-sensors:
- Light weight
- Size (large area sensors can be made)
- Easy integration with other electronics components
Organic photo-sensors can be formed not only on glass or inorganic substrates but also on plastic substrates, so lightweight, thin films, flexible and large area sensors can be made, and can be easy combined with other printed electronics technologies.
Therefore, it can be expected to be applied to applications such as pulse oximeter, digital X-ray sensor, proximity (distance) sensor, fingerprint authentication sensor, vein authentication, iris authentication, night vision.
- Differential signal from two OLEDs detected by OPD
- Heart rate and oxygenation level of the blood is calculated
- OLED and OPD can be integrated on the same substrate
Example Application: OPD Proximity Sensor Switching OLEDs
Features of OPD materials
Our organic photo-sensor material has absorption in the visible to near infrared region, so it can be used in various photo-sensing applications.
Organic photo-sensors using our material can achieve high external quantum yield (EQE) and low dark current.
Organic vs Silicon Photodiode Device Performance
|EQE||~ 65% (-2 bias)||
30% at 400nm rising
400 - 950nm
400 - 1100nm
|Responsivity (R)||> 0.15A/W (400nm)
> 0.29A/W (800nm)
Approx. Linear from
|< 1nA/cm2||10 - 100pA/cm2
50 - 100ns (100mm2)