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Heteroepitaxial Gro...
Heteroepitaxial Growth of GaP Photocathode by Hydride Vapor Phase Epitaxy for Water Splitting and CO2 Reduction
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- Strömberg, Axel (author)
- KTH,Fotonik
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- Yuan, Yanqi (author)
- Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China.
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- Li, Feng (author)
- Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China.
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- Manavaimaran, Balaji (author)
- KTH,Fotonik,Univ Madras, Dept Energy, Chennai 600025, Tamil Nadu, India.
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- Lourdudoss, Sebastian, 1953- (author)
- KTH,Fotonik
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- Zhang, Peng (author)
- Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China.
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- Sun, Yan-Ting (author)
- KTH,Fotonik
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(creator_code:org_t)
- 2022-11-20
- 2022
- English.
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In: Catalysts. - : MDPI. - 2073-4344. ; 12:11
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Subject headings
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- Heteroepitaxial Zn-doped p-GaP was grown on (001) GaAs, (001) Si and (111) Si substrates by hydride vapor phase epitaxy for solar-driven photoelectrochemical applications of hydrogen generation by water splitting and CO2 reduction. Growth of GaP on Si was realized through the implementation of a low-temperature buffer layer, and the morphology and crystalline quality were enhanced by optimizing the precursor flows and pre-heating ambient substrate. The p-GaP/GaAs and p-GaP/Si samples were processed to photoelectrodes with an amorphous TiO2 coating for CO2 reduction and a combination of TiO2 layer and mesoporous tungsten phosphide catalyst for water splitting. P-GaP/GaAs with suitable Zn-doping concentration exhibited photoelectrochemical performance comparable to homoepitaxial p-GaP/GaP for water splitting and CO2 reduction. Degradation of photocurrent in p-GaP/Si photoelectrodes is observed in PEC water splitting due to the high density of defects arising from heteroepitaxial growth.
Subject headings
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Keyword
- hydride vapor phase epitaxy
- Zn-doping
- water splitting
- CO2 reduction
- photoelectrochemical performance
Publication and Content Type
- ref (subject category)
- art (subject category)
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