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Amorphous selenium detector

The principle of the detector is summarized as follows: the photoconductive semiconductor converts the received line photons into electric charges, and then the electrical signals are read and digitized by the thin-film transistor array.
Amorphous selenium detector
Specific principle of x ray detector:
1, the incident photon of × line excites the electron-hole pair in the amorphous selenium layer;
2. Electrons and holes move in reverse under the action of the applied electric field, generating an electric current, whose magnitude is proportional to the number of incident line photons;
3. These current signals are stored in the inter-electrode capacitance of TFT. Each TFT and capacitor forms a pixel unit.
The Newheek detectors are 14 by 17 inches and 17 by 17 inches, followed by wired and wireless.
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