Relation between Ga vacancies, photoluminescence, and growth conditions of MOVPE-prepared GaN layers
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F22%3A00562801" target="_blank" >RIV/68378271:_____/22:00562801 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/22:10455500
Result on the web
<a href="https://hdl.handle.net/11104/0334994" target="_blank" >https://hdl.handle.net/11104/0334994</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/ma15196916" target="_blank" >10.3390/ma15196916</a>
Alternative languages
Result language
angličtina
Original language name
Relation between Ga vacancies, photoluminescence, and growth conditions of MOVPE-prepared GaN layers
Original language description
A set of GaN layers prepared by MOVPE under different technological conditions were investigated using variable energy positron annihilation spectroscopy (VEPAS) to find a link between technological conditions, GaN layer properties, and the concentration of Ga vacancies (VGa). In case of TEGa precursor, the formation of VGa was significantly influenced by the type of reactor atmosphere N2 or H2, while no similar behaviour was observed for TMGa. VGa formation was suppressed with increasing temperature for growth from TEGa. PL results show that yellow band luminescence in GaN is likely not connected with VGa, additionally, increased VGa concentration enhances excitonic luminescence. The probable explanation is that VGa prevent the formation of some other highly efficient nonradiative defects. Possible types of such defects are suggested.
Czech name
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Czech description
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Classification
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.)
Result continuities
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
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Materials
ISSN
1996-1944
e-ISSN
1996-1944
Volume of the periodical
15
Issue of the periodical within the volume
19
Country of publishing house
CH - SWITZERLAND
Number of pages
13
Pages from-to
6916
UT code for WoS article
000867125200001
EID of the result in the Scopus database
2-s2.0-85139908156