Radiation detector and measurement device for detecting X-ray radiation

1. A radiation detector for detection of X-ray radiation, comprising:

a carrier substrate,

a photoconductor detector layer, which contains GaN, is arranged on the carrier substrate and has a thickness of less than 50 μm, said detector layer having a lower surface connected with the carrier substrate and an upper surface opposite to the carrier substrate, and

contact electrodes, which form ohmic contacts with the detector layer, wherein

the contact electrodes comprise electrode pads arranged at opposite edges of the upper surface of the detector layer, and

the upper surface of the detector layer substantially is directly exposed to the surroundings.

2. The radiation detector according to claim 1 , comprising at least one of the features:

the thickness of the detector layer is less than 10 μm,

the detector layer has a surface, which is less than 100 mm 2 ,

the contact electrodes comprise two contact electrodes, and

the GaN is doped with Fe or C.

3. The radiation detector according to claim 1 , comprising at least one of the features:

the thickness of the detector layer is less than 5 μm, and

the detector layer has a surface, which is less than 10 mm 2 .

4. The radiation detector according to claim 1 , comprising at least one of the features:

the radiation detector has an encapsulation,

the radiation detector is provided with an adhesive surface,

the radiation detector has an electronic circuit, which is adapted for at least one of current measurement, data storage and data transmission, and

the radiation detector is designed for an energy-resolved measurement.

5. The radiation detector according to claim 4 , wherein the encapsulation is at least one of liquid-tight, resistant against acids, resistant against bases, temperature-proof and pressure-resistant.

6. The radiation detector according to claim 4 , wherein the electronic circuit has a RFID device.

7. The radiation detector according to claim 4 , wherein the adhesive surface is formed on a bendable material web by means of which the carrier substrate is connected.

8. The radiation detector according to claim 4 , wherein the encapsulation has a biocompatible surface.

9. The radiation detector according to claim 1 , which is part of at least one of

an endoscopic device,

an adhesive tape,

a cultivation device for biological cells, and

an implant device, which is configured for implantation in or on a living organism.

10. A measuring device, which is provided with at least one radiation detector according to claim 1 .

11. The measuring device according to claim 10 , wherein a housing is provided for, in which the at least one radiation detector is movable.

12. The measuring device according to claim 10 , which is a cultivation device for biological cells or an endoscopic device.

13. The measuring device according to claim 10 , wherein a plurality of radiation detectors are provided for, which are arranged along a reference line or a reference surface.

14. The measuring device according to claim 10 , which is provided with at least one of

an alarm device,

a positioning device, which is configured for positioning the at least one radiation detector relative to an object to be analyzed, and

a transducer device, which is configured for repeated recording of dosage values depending on time.

15. A method of using a measuring device according to claim 10 , said method comprising:

providing the measuring device; and

conducting dosimetry of X-ray radiation.

16. A method of using a radiation detector according to claim 10 , said method comprising:

providing the radiation detector; and

conducting dosimetry of X-ray radiation to detect radiation.

17. The radiation detector of claim 1 , wherein said radiation detector is without any contact electrodes on said carrier substrate.