Enhancing photocatalytic efficiency through spin-polarized semiconductor materials

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Enhancing photocatalytic efficiency through spin-polarized semiconductor materials

Popis výsledku v původním jazyce

Recently, there has been growing interest in whether magnetic semiconductor catalysts can enhance their catalytic efficiency through the application of magnetic fields. The key to developing such materials lies not in the magnitude of their magnetism but in whether doping or defect engineering can induce spin-polarized energy bands in the semiconductor. If spin-polarized energy bands can be created, it opens the possibility of using magnetic fields to control spin and, consequently, the absorption of light or the transition of photoelectrons. This has potential applications in spintronic optoelectronic devices or photocatalysts. Our work begins with ZnO nanowires, studying the effects of surface modification or doping with Co layers on their spin-polarized energy bands [2]. We apply this understanding to enhance photocatalytic efficiency under magnetic fields. Similarly, we have demonstrated that doping manganese cations (Mn2+) into CsPbBr3 halide perovskite nanoplates can significantly boost photocatalytic CO2 reduction reaction efficiencies when an external magnetic field is applied, attributed to the creation of spin-polarized electrons after Mn doping. Our results show that manipulating spin-polarized electrons in photocatalytic semiconductors is an effective strategy to enhance photocatalytic efficiencies. This approach has the potential to bring new opportunities in future for optoelectronic, energy, and biomedical applications through the spin polarization engineering of semiconductor energy bands.

Název v anglickém jazyce

Enhancing photocatalytic efficiency through spin-polarized semiconductor materials

Popis výsledku anglicky

Recently, there has been growing interest in whether magnetic semiconductor catalysts can enhance their catalytic efficiency through the application of magnetic fields. The key to developing such materials lies not in the magnitude of their magnetism but in whether doping or defect engineering can induce spin-polarized energy bands in the semiconductor. If spin-polarized energy bands can be created, it opens the possibility of using magnetic fields to control spin and, consequently, the absorption of light or the transition of photoelectrons. This has potential applications in spintronic optoelectronic devices or photocatalysts. Our work begins with ZnO nanowires, studying the effects of surface modification or doping with Co layers on their spin-polarized energy bands [2]. We apply this understanding to enhance photocatalytic efficiency under magnetic fields. Similarly, we have demonstrated that doping manganese cations (Mn2+) into CsPbBr3 halide perovskite nanoplates can significantly boost photocatalytic CO2 reduction reaction efficiencies when an external magnetic field is applied, attributed to the creation of spin-polarized electrons after Mn doping. Our results show that manipulating spin-polarized electrons in photocatalytic semiconductors is an effective strategy to enhance photocatalytic efficiencies. This approach has the potential to bring new opportunities in future for optoelectronic, energy, and biomedical applications through the spin polarization engineering of semiconductor energy bands.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/GC24-10607J" target="_blank" >GC24-10607J: Spinově polarizované nanostruktury oxidu zinečnatého</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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