Advancement toward ultra-thick and bright InGaN/GaN structures with a high number of QWs

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F19%3A00502820" target="_blank" >RIV/68378271:_____/19:00502820 - isvavai.cz</a>
Alternative codes found
RIV/46747885:24220/19:00009705
Result on the web
<a href="http://dx.doi.org/10.1039/C8CE01830H" target="_blank" >http://dx.doi.org/10.1039/C8CE01830H</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/C8CE01830H" target="_blank" >10.1039/C8CE01830H</a>

Result language
angličtina
Original language name
Advancement toward ultra-thick and bright InGaN/GaN structures with a high number of QWs
Original language description
InGaN/GaN multiple quantum well structures are studied as potential candidates for superfast scintillation detectors and show the leading decay time of around 1 ns and intense luminescence. Photoluminescence properties of these structures with quantum well numbers ranging from 10 to 60 are described. It is shown that with increased QW number, the luminescence efficiency of the whole structure increases due to the V-pits of a sufficient size suppressing non-radiative recombination. Suppression of the non-radiative recombination near dislocations is demonstrated by the cathodoluminescence measurement. The optimal V-pit size is found to be in the range from 200 to 300 nm, which is obtained for structures with 40 QWs. On the other hand, when the V-pit size exceeds the optimal value, the PL intensity decreases by strong V-pit coalescence, which is observed for structures with 60 QWs. For further increasing the active region thickness it is necessary to find a way to control the V-pit size.n
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
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
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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