Sandwich-Nanostructured n-Cu2O/AuAg/p-Cu2O Photocathode with Highly Positive Onset Potential for Improved Water Reduction

Yu Chang Lin; Liang Ching Hsu; Chia Yu Lin; Chao Lung Chiang; Che Min Chou; Wen Wei Wu; San Yuan Chen; Yan Gu Lin

doi:10.1021/acsami.9b11737

Sandwich-Nanostructured n-Cu₂O/AuAg/p-Cu₂O Photocathode with Highly Positive Onset Potential for Improved Water Reduction

Yu Chang Lin, Liang Ching Hsu, Chia Yu Lin, Chao Lung Chiang, Che Min Chou, Wen Wei Wu, San Yuan Chen, Yan Gu Lin

化學工程學系

研究成果: Article › 同行評審

35 引文斯高帕斯（Scopus）

摘要

An n-Cu₂O layer formed a high-quality buried junction with p-Cu₂O to increase the photovoltage and thus to shift the turn-on voltage positively. Mott-Schottky measurements confirmed that the improvement benefited from a positive shift in flat-band potential. The obtained extremely positive onset potential, 0.8 V_RHE in n-Cu₂O/AuAg/p-Cu₂O, is comparable with measurements from water reduction catalysts. The AuAg alloy sandwiched between the homojunction of n-Cu₂O and p-Cu₂O improved the photocatalytic performance. This alloy both served as an electron relay and promoted electron-hole pair generation in nearby semiconductors; the charge transfer between n-Cu₂O and p-Cu₂O in the sandwich structure was measured with X-ray absorption spectra. The proposed sandwich structure can be considered as a new direction for the design of efficient solar-related devices.

原文	English
頁（從 - 到）	38625-38632
頁數	8
期刊	ACS Applied Materials and Interfaces
卷	11
發行號	42
DOIs	https://doi.org/10.1021/acsami.9b11737
出版狀態	Published - 2019 10月 23

All Science Journal Classification (ASJC) codes

一般材料科學

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10.1021/acsami.9b11737

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title = "Sandwich-Nanostructured n-Cu2O/AuAg/p-Cu2O Photocathode with Highly Positive Onset Potential for Improved Water Reduction",

abstract = "An n-Cu2O layer formed a high-quality buried junction with p-Cu2O to increase the photovoltage and thus to shift the turn-on voltage positively. Mott-Schottky measurements confirmed that the improvement benefited from a positive shift in flat-band potential. The obtained extremely positive onset potential, 0.8 VRHE in n-Cu2O/AuAg/p-Cu2O, is comparable with measurements from water reduction catalysts. The AuAg alloy sandwiched between the homojunction of n-Cu2O and p-Cu2O improved the photocatalytic performance. This alloy both served as an electron relay and promoted electron-hole pair generation in nearby semiconductors; the charge transfer between n-Cu2O and p-Cu2O in the sandwich structure was measured with X-ray absorption spectra. The proposed sandwich structure can be considered as a new direction for the design of efficient solar-related devices.",

author = "Lin, {Yu Chang} and Hsu, {Liang Ching} and Lin, {Chia Yu} and Chiang, {Chao Lung} and Chou, {Che Min} and Wu, {Wen Wei} and Chen, {San Yuan} and Lin, {Yan Gu}",

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doi = "10.1021/acsami.9b11737",

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AU - Lin, Yu Chang

AU - Hsu, Liang Ching

AU - Lin, Chia Yu

AU - Chiang, Chao Lung

AU - Chou, Che Min

AU - Wu, Wen Wei

AU - Chen, San Yuan

AU - Lin, Yan Gu

PY - 2019/10/23

Y1 - 2019/10/23

N2 - An n-Cu2O layer formed a high-quality buried junction with p-Cu2O to increase the photovoltage and thus to shift the turn-on voltage positively. Mott-Schottky measurements confirmed that the improvement benefited from a positive shift in flat-band potential. The obtained extremely positive onset potential, 0.8 VRHE in n-Cu2O/AuAg/p-Cu2O, is comparable with measurements from water reduction catalysts. The AuAg alloy sandwiched between the homojunction of n-Cu2O and p-Cu2O improved the photocatalytic performance. This alloy both served as an electron relay and promoted electron-hole pair generation in nearby semiconductors; the charge transfer between n-Cu2O and p-Cu2O in the sandwich structure was measured with X-ray absorption spectra. The proposed sandwich structure can be considered as a new direction for the design of efficient solar-related devices.

AB - An n-Cu2O layer formed a high-quality buried junction with p-Cu2O to increase the photovoltage and thus to shift the turn-on voltage positively. Mott-Schottky measurements confirmed that the improvement benefited from a positive shift in flat-band potential. The obtained extremely positive onset potential, 0.8 VRHE in n-Cu2O/AuAg/p-Cu2O, is comparable with measurements from water reduction catalysts. The AuAg alloy sandwiched between the homojunction of n-Cu2O and p-Cu2O improved the photocatalytic performance. This alloy both served as an electron relay and promoted electron-hole pair generation in nearby semiconductors; the charge transfer between n-Cu2O and p-Cu2O in the sandwich structure was measured with X-ray absorption spectra. The proposed sandwich structure can be considered as a new direction for the design of efficient solar-related devices.

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ER -

Sandwich-Nanostructured n-Cu2O/AuAg/p-Cu2O Photocathode with Highly Positive Onset Potential for Improved Water Reduction

摘要

All Science Journal Classification (ASJC) codes

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其它文件與鏈接

指紋

引用此

Sandwich-Nanostructured n-Cu₂O/AuAg/p-Cu₂O Photocathode with Highly Positive Onset Potential for Improved Water Reduction