Sandwich-Nanostructured n-Cu₂O/AuAg/p-Cu₂O Photocathode with Highly Positive Onset Potential for Improved Water Reduction
學年 108
學期 1
出版（發表）日期 2019-10-01
作品名稱 Sandwich-Nanostructured n-Cu₂O/AuAg/p-Cu₂O Photocathode with Highly Positive Onset Potential for Improved Water Reduction
作品名稱（其他語言）
著者 Yu-Chang Lin; Liang-Ching Hsu; Chia-Yu Lin; Chao-Lung Chiang; Che-Min Chou; Wen-Wei Wu; San-Yuan Chen; Yan-Gu Lin
單位
出版者
著錄名稱、卷期、頁數 ACS Applied Materials & Interfaces 11(42), p.38625–38632
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 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.
關鍵字 Solar water splitting; Sandwich structure; Copper(I) oxide; Photocathode; Localized surface plasmon resonance
語言 en_US
ISSN 1944-8244; 1944-8252
期刊性質 國外
收錄於 SCI SSCI Scopus
產學合作
通訊作者 San-Yuan Chen & Yan-Gu Lin
審稿制度 是
國別 USA
公開徵稿
出版型式 ,電子版
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