time:2021-11-03 Views:22
Organic photodiodes are used in a new type of instrument, the pulse oximeter, which is now used to measure heart rate and blood oxygen levels. Using organic photodiodes, multiple devices can work at the same time, and the light intensity is 10 times lower than that of traditional devices. In this way, the wearable health monitor can generate better physiological information and does not require frequent battery replacement for continuous monitoring. Other possible applications include human-machine interfaces such as non-contact gesture recognition and control.
The future application of organic photodiodes is to use scintillation to detect ionizing radiation, that is, phosphors that scintillate when high-energy particles collide. Reducing the detectable luminosity will increase the sensitivity of the instrument, so that the instrument can detect low levels of radiation. Detecting the amount of radiation from a vehicle or container requires a larger detector area, and it is much easier to manufacture with organic silicon photodiodes compared to organic silicon photodiode arrays.
"In X-ray devices, organic photodiodes may also have similar advantages. Doctors hope to use as little radiation as possible in order to reduce the dose delivered to the patient. Similarly, sensitivity, large area, and flexible form factors should make organic photodiodes superior to silicon-based diodes.
It is necessary to develop more and more scalable photodetector technologies. One of the driving forces of this work is to develop what we know as scalable, cost-effective and organic technology.
The organic photodiode can display the electronic noise current value in the range of dozens of femtoamps, and can display the equivalent noise power value of hundreds of femtowatts. In addition to the response time, the main performance indicators of organic photodiodes can match those of silicon, and researchers are still making great efforts to improve its application prospects.