Growth and properties of AIII BV QD structures for intermediate band solar cells

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F15%3A00447827" target="_blank" >RIV/68378271:_____/15:00447827 - isvavai.cz</a>
Alternative codes found
RIV/67985882:_____/15:00447827
Result on the web
<a href="http://dx.doi.org/10.1016/j.jcrysgro.2014.11.013" target="_blank" >http://dx.doi.org/10.1016/j.jcrysgro.2014.11.013</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jcrysgro.2014.11.013" target="_blank" >10.1016/j.jcrysgro.2014.11.013</a>

Result language
angličtina
Original language name
Growth and properties of AIII BV QD structures for intermediate band solar cells
Original language description
Intermediate band solar cells theoretically offer a promising way to significantly increase cell efficiency compared to a single-junction solar cell. We focused on the preparation of antimony containing materials as a covering of QD layers. In this paperwe discuss how the concentration gradient of GaAsSb strain reducing layers can influence the resulting optical properties of the solar cell structures. The main principle of the structure is that the absorption of light is achieved at QD excited stateswith better overlap of electron and hole wave functions. With fast relaxation of carriers to the ground state the electrons and holes are quickly spatially separated. Two different composition gradients of GaAsSb SRL were used for the solar cell structure. One or five quantum dot stacks were compared. The maximal PC increased approximately 17 times with increasing number of QD layers from 1 to 5. The results suggest high application potential of this structure for photovoltaics.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Project
<a href="/en/project/GP14-21285P" target="_blank" >GP14-21285P: Intermediate band solar cells</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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