Enhanced photoelectrochemical performance and stability of Si nanowire photocathode with deposition of hematite and carbon
Enhanced photoelectrochemical performance and stability of Si nanowire photocathode with deposition of hematite and carbon
复制标题
通过赤铁矿和碳沉积增强硅纳米线光电阴极的光电化学性能和稳定性
DOI：
10.1016/j.apsusc.2018.11.221
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发表时间：
2019-03
影响因子：
6.7
通讯作者：
Gao Lian
中科院分区：
文献类型：
--
作者：
Qu Yuqi;Li Feng;Zhang Peng;Zhao Liping;Liu Jing;Song Xuefeng;Gao Lian
Tremendous efforts have been dedicated to the development of transition metal and/or metal oxide surface coating materials to enhance the activity and stability of photoelectrodes. Nanostructured Si photoelectrodes have shown outstanding photoelectrochemical (PEC) performance due to their effective photon absorption and charge generation, separation, and mobility. While the chemical stability and surface reaction efficiency of Si photoelectrodes still need improvement before commercial application. Herein, we report the design and synthesis of a composite Si photoelectrode with a configuration of C/α-Fe2O3/Si nanowires, which presented a stable photoelectrochemical hydrogen production in neutral electrolyte. The p-Si nanowires were prepared by metal-assisted chemical etching for enhanced optical absorption and decorated with a mesoporous α-Fe2O3thin film (∼80 nm) through pyrolysis of ferrocene. A thin carbon passivation layer (∼20 nm) was further deposited through ion sputtering further increasing the stability of the composite structure and low bias photocurrent. The role of α-Fe2O3and carbon layer have been discussed. The composite photoelectrode shows a stable photocurrent of ∼−27 mA/cm2in 2 h and an anodic onset potential shift of ∼0.33 V relative to the bare Si in the neutral solution.
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影响因子：
19
作者：
Reddy, M. V.;Yu, Ting;Chowdari, B. V. R.
通讯作者：
Chowdari, B. V. R.
影响因子：
10.8
作者：
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Jiang Wu;Yanbo Li;J. Kubota;K. Domen;M. Aagesen;T. Ward;A. Sánchez;R. Beanland;Yunyan Zhang;M. Tang;S. Hatch;A. Seeds;Huiyun Liu
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影响因子：
9.5
作者：
Huang, Shufan;Zhang, Haifeng;Cheng, Chuanwei
通讯作者：
Cheng, Chuanwei
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影响因子：
19
作者：
Peng, Kuiqing;Lu, Aijiang;Lee, Shuit-Tong
通讯作者：
Lee, Shuit-Tong
影响因子：
32.5
作者：
K. Sun;Namseok Park;Zhelin Sun;Jigang Zhou;Jian Wang;Xiaolu Pang;Shaohua Shen;S. Noh;Yi Jing-Yi-J
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K. Sun;Namseok Park;Zhelin Sun;Jigang Zhou;Jian Wang;Xiaolu Pang;Shaohua Shen;S. Noh;Yi Jing-Yi-J