Toshiba: radiation pulse detection with optical sensor: Film using organic semiconductor
-Utilizing features such as thinness, light weight, and wide-range measurement, it can also be applied to industrial and medical applications-
Toshiba: Organic semiconductor film
We are developing optical sensors for various applications.
This time, we have developed a high-sensitivity film-type optical sensor using an organic semiconductor.
Conventional organic semiconductor:
With conventional organic semiconductor sensors, it is very difficult to detect faint light.
This organic semiconductor:
The world’s first film-type optical sensor using an organic semiconductor, succeeded in detecting radiation pulses (Note 1) (Figure 1).
Combined with a scintillator that emits light weakly against radiation.
New uses:
This thin and lightweight sensor can be applied to IoT and wearable sensors.
An optical sensor converts light into an electrical signal and measures its current to determine the presence and intensity of light.
Camera image sensor
Body temperature measurement with infrared rays emitted from the human body
Irradiate the target with a laser. Measuring distance from an object by measuring reflected light
It is used for various purposes.
In addition, radiation can be measured by combining scintillators.
The development of photosensors (organic photosensors) using organic semiconductor thin films that can be expected to be thinner, smaller, and larger in area than conventional photosensors using inorganic semiconductors (silicon, etc.) is drawing attention.
Film type: Structure of organic light sensor
We have developed a highly sensitive film-type organic photosensor that can detect even weak light.
We can detect faint light from the scintillator accompanying the incidence of a single radiation.
The developed film-type optical sensor
Transparent electrode,
Buffer layer,
Organic semiconductor layer,
It has a laminated structure of metal electrodes and is sealed with a film-like material mainly composed of organic matter.
https://www.toshiba.co.jp/rdc/detail/1909_01.htm?from=RSS_PRESS&uid=20190902-6251