WISEGaN - New generation of InGaN layers, quantum wells and wires grown on vicinal GaN substrates for optoelectronics and photovoltaics
Public support
Provider
Ministry of Education, Youth and Sports
Programme
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Call for proposals
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Main participants
Univerzita Karlova / Matematicko-fyzikální fakulta
Contest type
M2 - International cooperation
Contract ID
MSMT-31729/2015-1
Alternative language
Project name in Czech
WISEGaN - New generation of InGaN layers, quantum wells and wires grown on vicinal GaN substrates for optoelectronics and photovoltaics
Annotation in Czech
InGaN layers, quantum wells and wires are the most important parts of such devices as blue/green LEDs, superluminescent LEDs (SLEDs), laser diodes (LDs), and photovoltaic cells. However, InGaN is very difficult to be grown because of low growth temperature and large lattice mismatch of InN and GaN. These two factors cause formation of many extended defects, as In-fluctuations and misfit dislocations, as well as of point defects: vacancies, interstitials and impurities. In the Project, we are going to develop technology of InGaN epi-structures which will have a high In-content but less microstructural defects compared to the previous generations of this material. The idea of the Project is to use technology of prepatterned GaN substrates with local off-orientations and sequential flow of In-precursor to obtain more uniform InGaN 3-dimensional structures with lower defect concentration. In particular, we will focus on lattice relaxation that takes place when InGaN thickness and In-content are too high. This relaxation will be examined ex-situ and in-situ using advanced methods of X-ray Diffraction and other methods. As a result of the Project, we will get new generations of InGaN layers, quantum wells and wires which will be used for constructing the blue and green emitters (LEDs, SLEDs and LDs) and photovoltaic cells.
Scientific branches
R&D category
ZV - Basic research
CEP classification - main branch
BM - Solid-state physics and magnetism
CEP - secondary branch
JA - Electronics and optoelectronics
CEP - another secondary branch
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OECD FORD - equivalent branches <br>(according to the <a href="http://www.vyzkum.cz/storage/att/E6EF7938F0E854BAE520AC119FB22E8D/Prevodnik_oboru_Frascati.pdf">converter</a>)
10302 - Condensed matter physics (including formerly solid state physics, supercond.)<br>20201 - Electrical and electronic engineering
Completed project evaluation
Provider evaluation
U - Uspěl podle zadání (s publikovanými či patentovanými výsledky atd.)
Project results evaluation
Following the condition that the candidate of financial contribution was evaluated and afterwards selected by international provider in accordance with the rules of the program the Ministry of Education, Youth ans Sports does not realize the evaluation of project.
Solution timeline
Realization period - beginning
Oct 1, 2015
Realization period - end
Dec 31, 2018
Project status
U - Finished project
Latest support payment
Feb 14, 2018
Data delivery to CEP
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data delivery code
CEP19-MSM-8F-U/01:1
Data delivery date
Jun 18, 2019
Finance
Total approved costs
3,480 thou. CZK
Public financial support
3,480 thou. CZK
Other public sources
0 thou. CZK
Non public and foreign sources
0 thou. CZK