Gradient bandgap modification for highly efficient carrier transport in antimony sulfide-selenide tandem solar cells
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F22%3A10250343" target="_blank" >RIV/61989100:27710/22:10250343 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0927024822003452" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0927024822003452</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.solmat.2022.111926" target="_blank" >10.1016/j.solmat.2022.111926</a>
Alternative languages
Result language
angličtina
Original language name
Gradient bandgap modification for highly efficient carrier transport in antimony sulfide-selenide tandem solar cells
Original language description
Antimony chalcogenides emerge as a type of efficient material for solar cells. In particular, antimony sulfide-selenide (SbSSe) has attracted significant interests based on their simple preparation, excellent photoelectric performance, and tunable bandgaps. In this study, by applying energy-band engineering technologies, we ach-ieved carrier transport balance and light absorption balance for SbSSe single-and triple-junction solar cells, respectively. First in a single junction solar cell, the photoelectric conversion efficiency (PCE) of SbSSe solar cells is improved from 13.14% to 16.16% with a front-gradient Se content structure compared to a non-gradient Se content SbSSe solar cell. This improvement is attributed to the additional electric field induced by such a gradient bandgap, promoting the carrier motion. Consequently, the balance of carrier transport is realized by adjusting the drift velocities of holes and electrons simultaneously, thereby surpassing carrier recombination and improving the device parameters of short-circuit current density (Jsc) and fill factor (FF). In a next step, an SbSSe of advanced gradient bandgap has been applied as the absorber layer of middle-cell in an antimony chalcogenide based triple-junction solar cell. Based on the high Jsc and FF advantages of SbSSe sub-cells with front-gradient Se content structure, the uniform absorption of sunlight in each sub-cell and current matching of tandem solar cells could be easily realized. Eventually, the PCE of the triple-junction solar cell exhibits an enhancement from 17.34% to 19.51%. Our results demonstrate that the application of energy-band engineering technology can effectively improve device performance, providing theoretical guidance for the refined design and nano-manufacturing development of antimony chalcogenide solar cells.
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
20400 - Chemical engineering
Result continuities
Project
<a href="/en/project/EF16_019%2F0000853" target="_blank" >EF16_019/0000853: Institute of Environmental Technology - Excellent Research</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
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
Solar Energy Materials and Solar Cells
ISSN
0927-0248
e-ISSN
1879-3398
Volume of the periodical
246
Issue of the periodical within the volume
6 August 2022
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
nestrankovano
UT code for WoS article
000843000600004
EID of the result in the Scopus database
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