author_facet Wang, Hang
Wang, Ying
Gong, Shuyan
Zhou, Xinyuan
Yang, Zaixing
Yang, Jun
Han, Ning
Chen, Yunfa
Wang, Hang
Wang, Ying
Gong, Shuyan
Zhou, Xinyuan
Yang, Zaixing
Yang, Jun
Han, Ning
Chen, Yunfa
author Wang, Hang
Wang, Ying
Gong, Shuyan
Zhou, Xinyuan
Yang, Zaixing
Yang, Jun
Han, Ning
Chen, Yunfa
spellingShingle Wang, Hang
Wang, Ying
Gong, Shuyan
Zhou, Xinyuan
Yang, Zaixing
Yang, Jun
Han, Ning
Chen, Yunfa
Crystals
Growth of Ga2O3 Nanowires via Cu-As-Ga Ternary Phase Diagram
Inorganic Chemistry
Condensed Matter Physics
General Materials Science
General Chemical Engineering
author_sort wang, hang
spelling Wang, Hang Wang, Ying Gong, Shuyan Zhou, Xinyuan Yang, Zaixing Yang, Jun Han, Ning Chen, Yunfa 2073-4352 MDPI AG Inorganic Chemistry Condensed Matter Physics General Materials Science General Chemical Engineering http://dx.doi.org/10.3390/cryst9030155 <jats:p>Currently, it is challenging to develop new catalysts for semiconductor nanowires (NWs) growth in a complementary-metal-oxide-semiconductor (CMOS) compatible manner via a vapor-liquid-solid (VLS) mechanism. In this study, chemically synthesized Cu2O nano cubes are adopted as the catalyst for single crystalline β-Ga2O3 NWs growth in chemical vapor deposition. The growth temperature is optimized to be 750 to 800 °C. The NW diameter is controlled by tuning the sizes of Cu2O cubes in the 20 to 100 nm range with a bandgap of ~4.85 eV as measured by ultraviolet-visible absorption spectroscopy. More importantly, the catalyst tip is found to be Cu5As2, which is distinguished from those Au-catalyzed Au-Ga alloys. After a comprehensive phase diagram investigation, the β-Ga2O3 NWs are proposed to be grown by the ternary phase of Cu-As-Ga diffusing Ga into the growth frontier of the NW, where Ga react with residual oxygen to form the NWs. Afterward, Ga diminishes after growth since Ga would be the smallest component in the ternary alloy. All these results show the importance of the catalyst choice for CMOS compatible NW growth and also the potency of the ternary phase catalyst growth mode in other semiconductor NWs synthesis.</jats:p> Growth of Ga2O3 Nanowires via Cu-As-Ga Ternary Phase Diagram Crystals
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title Growth of Ga2O3 Nanowires via Cu-As-Ga Ternary Phase Diagram
title_unstemmed Growth of Ga2O3 Nanowires via Cu-As-Ga Ternary Phase Diagram
title_full Growth of Ga2O3 Nanowires via Cu-As-Ga Ternary Phase Diagram
title_fullStr Growth of Ga2O3 Nanowires via Cu-As-Ga Ternary Phase Diagram
title_full_unstemmed Growth of Ga2O3 Nanowires via Cu-As-Ga Ternary Phase Diagram
title_short Growth of Ga2O3 Nanowires via Cu-As-Ga Ternary Phase Diagram
title_sort growth of ga2o3 nanowires via cu-as-ga ternary phase diagram
topic Inorganic Chemistry
Condensed Matter Physics
General Materials Science
General Chemical Engineering
url http://dx.doi.org/10.3390/cryst9030155
publishDate 2019
physical 155
description <jats:p>Currently, it is challenging to develop new catalysts for semiconductor nanowires (NWs) growth in a complementary-metal-oxide-semiconductor (CMOS) compatible manner via a vapor-liquid-solid (VLS) mechanism. In this study, chemically synthesized Cu2O nano cubes are adopted as the catalyst for single crystalline β-Ga2O3 NWs growth in chemical vapor deposition. The growth temperature is optimized to be 750 to 800 °C. The NW diameter is controlled by tuning the sizes of Cu2O cubes in the 20 to 100 nm range with a bandgap of ~4.85 eV as measured by ultraviolet-visible absorption spectroscopy. More importantly, the catalyst tip is found to be Cu5As2, which is distinguished from those Au-catalyzed Au-Ga alloys. After a comprehensive phase diagram investigation, the β-Ga2O3 NWs are proposed to be grown by the ternary phase of Cu-As-Ga diffusing Ga into the growth frontier of the NW, where Ga react with residual oxygen to form the NWs. Afterward, Ga diminishes after growth since Ga would be the smallest component in the ternary alloy. All these results show the importance of the catalyst choice for CMOS compatible NW growth and also the potency of the ternary phase catalyst growth mode in other semiconductor NWs synthesis.</jats:p>
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author Wang, Hang, Wang, Ying, Gong, Shuyan, Zhou, Xinyuan, Yang, Zaixing, Yang, Jun, Han, Ning, Chen, Yunfa
author_facet Wang, Hang, Wang, Ying, Gong, Shuyan, Zhou, Xinyuan, Yang, Zaixing, Yang, Jun, Han, Ning, Chen, Yunfa, Wang, Hang, Wang, Ying, Gong, Shuyan, Zhou, Xinyuan, Yang, Zaixing, Yang, Jun, Han, Ning, Chen, Yunfa
author_sort wang, hang
container_issue 3
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container_title Crystals
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description <jats:p>Currently, it is challenging to develop new catalysts for semiconductor nanowires (NWs) growth in a complementary-metal-oxide-semiconductor (CMOS) compatible manner via a vapor-liquid-solid (VLS) mechanism. In this study, chemically synthesized Cu2O nano cubes are adopted as the catalyst for single crystalline β-Ga2O3 NWs growth in chemical vapor deposition. The growth temperature is optimized to be 750 to 800 °C. The NW diameter is controlled by tuning the sizes of Cu2O cubes in the 20 to 100 nm range with a bandgap of ~4.85 eV as measured by ultraviolet-visible absorption spectroscopy. More importantly, the catalyst tip is found to be Cu5As2, which is distinguished from those Au-catalyzed Au-Ga alloys. After a comprehensive phase diagram investigation, the β-Ga2O3 NWs are proposed to be grown by the ternary phase of Cu-As-Ga diffusing Ga into the growth frontier of the NW, where Ga react with residual oxygen to form the NWs. Afterward, Ga diminishes after growth since Ga would be the smallest component in the ternary alloy. All these results show the importance of the catalyst choice for CMOS compatible NW growth and also the potency of the ternary phase catalyst growth mode in other semiconductor NWs synthesis.</jats:p>
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spelling Wang, Hang Wang, Ying Gong, Shuyan Zhou, Xinyuan Yang, Zaixing Yang, Jun Han, Ning Chen, Yunfa 2073-4352 MDPI AG Inorganic Chemistry Condensed Matter Physics General Materials Science General Chemical Engineering http://dx.doi.org/10.3390/cryst9030155 <jats:p>Currently, it is challenging to develop new catalysts for semiconductor nanowires (NWs) growth in a complementary-metal-oxide-semiconductor (CMOS) compatible manner via a vapor-liquid-solid (VLS) mechanism. In this study, chemically synthesized Cu2O nano cubes are adopted as the catalyst for single crystalline β-Ga2O3 NWs growth in chemical vapor deposition. The growth temperature is optimized to be 750 to 800 °C. The NW diameter is controlled by tuning the sizes of Cu2O cubes in the 20 to 100 nm range with a bandgap of ~4.85 eV as measured by ultraviolet-visible absorption spectroscopy. More importantly, the catalyst tip is found to be Cu5As2, which is distinguished from those Au-catalyzed Au-Ga alloys. After a comprehensive phase diagram investigation, the β-Ga2O3 NWs are proposed to be grown by the ternary phase of Cu-As-Ga diffusing Ga into the growth frontier of the NW, where Ga react with residual oxygen to form the NWs. Afterward, Ga diminishes after growth since Ga would be the smallest component in the ternary alloy. All these results show the importance of the catalyst choice for CMOS compatible NW growth and also the potency of the ternary phase catalyst growth mode in other semiconductor NWs synthesis.</jats:p> Growth of Ga2O3 Nanowires via Cu-As-Ga Ternary Phase Diagram Crystals
spellingShingle Wang, Hang, Wang, Ying, Gong, Shuyan, Zhou, Xinyuan, Yang, Zaixing, Yang, Jun, Han, Ning, Chen, Yunfa, Crystals, Growth of Ga2O3 Nanowires via Cu-As-Ga Ternary Phase Diagram, Inorganic Chemistry, Condensed Matter Physics, General Materials Science, General Chemical Engineering
title Growth of Ga2O3 Nanowires via Cu-As-Ga Ternary Phase Diagram
title_full Growth of Ga2O3 Nanowires via Cu-As-Ga Ternary Phase Diagram
title_fullStr Growth of Ga2O3 Nanowires via Cu-As-Ga Ternary Phase Diagram
title_full_unstemmed Growth of Ga2O3 Nanowires via Cu-As-Ga Ternary Phase Diagram
title_short Growth of Ga2O3 Nanowires via Cu-As-Ga Ternary Phase Diagram
title_sort growth of ga2o3 nanowires via cu-as-ga ternary phase diagram
title_unstemmed Growth of Ga2O3 Nanowires via Cu-As-Ga Ternary Phase Diagram
topic Inorganic Chemistry, Condensed Matter Physics, General Materials Science, General Chemical Engineering
url http://dx.doi.org/10.3390/cryst9030155