Gradient bandgap modification for highly efficient carrier transport in antimony sulfide-selenide tandem solar cells

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Gradient bandgap modification for highly efficient carrier transport in antimony sulfide-selenide tandem solar cells

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Gradient bandgap modification for highly efficient carrier transport in antimony sulfide-selenide tandem solar cells

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20400 - Chemical engineering

Projekt

<a href="/cs/project/EF16_019%2F0000853" target="_blank" >EF16_019/0000853: Institut environmentálních technologií - excelentní výzkum</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Solar Energy Materials and Solar Cells

ISSN

0927-0248

e-ISSN

1879-3398

Svazek periodika

246

Číslo periodika v rámci svazku

6 August 2022

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

nestrankovano

Kód UT WoS článku

000843000600004

EID výsledku v databázi Scopus

—