Hybrid detector based on MOVPE grown InGaN/GaN MQW + BGO

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F22%3A00570907" target="_blank" >RIV/68378271:_____/22:00570907 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Hybrid detector based on MOVPE grown InGaN/GaN MQW + BGO

Original language description

The work focus on description of MOVPE InGaN/GaN MQW scintillation structures. Scintillator works as a convertor of high-energy ionizing radiation to the radiation usually in the visible part of spectrum. These particles can be X-ray, gamma radiation or alpha, beta or proton particles. Preparation, properties and problems of MOVPE InGaN/GaN scintillators with MQW structures are discused. Efficient detection of high-energy ionizing radiation requires thick active region. The highest distance of two adjacent QWs ought to be lower than diffusion length of GaN exciton. This makes thick enough MQW structures infeasible because of structure polarization, strength, dislocations, other defects. We have realized alternative solution, which is a hybrid sandwich InGaN/GaN MQW + BGO (Bi4Ge3O12) detector. It is composed from 12 InGaN/GaN scintillators (4 scintillators joined in the stack) and enclosed by two BGO bulk scintillators 350 μm thick.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů