Substrate-Electrode Interface Engineering by an Electron-Transport Layer in Hematite Photoanode
文献类型：期刊论文
| 作者 | Ding, Chunmei; Wang, Zhiliang; Shi, Jingying; Yao, Tingting; Li, Ailong; Yan, Pengli; Huang, Baokun; Li, Can |
| 刊名 | ACS APPLIED MATERIALS & INTERFACES
 |
| 出版日期 | 2016-03-23 |
| 卷号 | 8期号:11页码:7086-7091 |
| ISSN号 | 1944-8244 |
| 关键词 | Hematite Fe2o3 Li Wo3 Electron-transport Layer Interface |
| DOI | 10.1021/acsami.5b12818 |
| 文献子类 | Article |
| 英文摘要 | The photoelectrochemical water oxidation efficiency of photo anodes is largely limited by interfacial charge-transfer processes. Herein, a metal oxide electron-transport layer (ETL) was introduced at the substrate-electrode interface. Hematite photoanodes prepared on Li+ or WO3-modified substrates deliver higher photocurrent. It is inferred that a Li-doped Fe2O3 (Li:Fe2O3) layer with lower flat band potential than the bulk is formed. Li:Fe2O3 and WO3 are proved to function as an expressway for electron extraction. Via introducing ETL, both the charge separation and injection efficiencies are improved. The lifetime of photogenerated electrons is prolonged by 3 times, and the ratio of surface charge transfer and recombination rate is enhanced by 5 times with Li:Fe2O3 and 125 times with WO3 ETL at 1.23 V versus reversible hydrogen electrode. This result indicates the expedited electron extraction from photoanode to the substrate can suppress not only the recombination at the back contact interface but also those at the surface, which results in higher water oxidation efficiency. |
| WOS关键词 | SOLAR WATER OXIDATION ; MODULATED PHOTOCURRENT SPECTROSCOPY ; ALPHA-FE2O3 ELECTRODES ; HIGH-PERFORMANCE ; BACK-REACTION ; THIN-FILM ; EFFICIENT ; CELLS ; TIO2 ; NANOSTRUCTURES |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| 出版者 | AMER CHEMICAL SOC |
| WOS记录号 | WOS:000372946600036 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/170644]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Li, Can |
| 作者单位 | Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, State Key Lab Catalysis, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ding, Chunmei,Wang, Zhiliang,Shi, Jingying,et al. Substrate-Electrode Interface Engineering by an Electron-Transport Layer in Hematite Photoanode[J]. ACS APPLIED MATERIALS & INTERFACES,2016,8(11):7086-7091. |
| APA | Ding, Chunmei.,Wang, Zhiliang.,Shi, Jingying.,Yao, Tingting.,Li, Ailong.,...&Li, Can.(2016).Substrate-Electrode Interface Engineering by an Electron-Transport Layer in Hematite Photoanode.ACS APPLIED MATERIALS & INTERFACES,8(11),7086-7091. |
| MLA | Ding, Chunmei,et al."Substrate-Electrode Interface Engineering by an Electron-Transport Layer in Hematite Photoanode".ACS APPLIED MATERIALS & INTERFACES 8.11(2016):7086-7091. |
入库方式： OAI收割
来源：大连化学物理研究所
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