Study on band-controlled semiconductor photocatalysts based on anion-doping in Fe- or Cu-based oxides

基于铁或铜基氧化物阴离子掺杂的能带控制半导体光催化剂的研究

• 批准号: 22550188
• 负责人: MORIKAWA Takeshi
• 金额: $ 2.41万
• 依托单位: Toyota Central R&D Lab., Inc.
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22550188/
• 关键词: p 型半導体; スパッタリング; 光触媒; 酸化鉄; 酸化銅; 光電流; 半導体; 可視光; エネルギー変換; 窒素ドープ; 酸化タンタル; 触媒・化学プロセス; 無機工業化学; p型半導体

A p-type N-doped α-Fe_2O_3 was developed by magnetron sputtering of a Fe_2O_3 target in a plasma containing N2 and Ar, followed by postannealing. Photoelectrochemical measurement under visible light irradiation showed that N- Fe_2O_3 exhibits a typical cathodic photocurrent originated from the p-type conduction. Furthermore, the photoactivity was enhanced by codoping of Zn. N,Zn-codoped Fe_2O_3, a p-type semiconductor with a band gap of 2.0 eV, was developed by cosputtering of Fe_2O_3 and ZnO in a plasma mixture of N_2 and Ar, followed by post-annealing. N,Zn- Fe_2O_3 showed a very high photocurrent, most likely originating from a higher concentration of acceptors than those of N- and Zn- Fe_2O_3.

在N2和Ar的等离子体中磁控溅射Fe_2O_3靶，然后进行退火处理，制备出p型N掺杂α-Fe_2O_3。在可见光照射下的光电化学测试表明，N-Fe_2 O_3具有典型的阴极光电流，其光电流来源于p型导电。此外，通过Zn的共掺杂，提高了光活性。在N_2和Ar的混合气体中，通过共溅射Fe_2O_3和ZnO，并经过退火处理，制备出了带隙为2.0eV的N，Zn共掺杂的P型半导体Fe_2O_3。N，Zn-Fe_2 O_3显示出很高的光电流，很可能是由于受主浓度高于N-和Zn-Fe_2 O_3。

项目成果

p-type conduction in N-doped α-Fe_2O_3 for solar fuel generation

用于太阳能燃料发电的 N 掺杂 α-Fe_2O_3 中的 p 型传导

• 发表时间: 2011
• 作者: T.Morikawa;S.Sato;T.Arai;T.Kajino
• 通讯作者: T.Kajino

Visible -light -induced selective photochemical and photoelectrochemical CO2 reduction utilizing semiconductor/metal-complex hybrid photocatalysts

利用半导体/金属复合物混合光催化剂进行可见光诱导的选择性光化学和光电化学二氧化碳还原

• 发表时间: 2011
• 作者: T. Morikawa;et al.
• 通讯作者: et al.

P-type conduction in N-doped N-Cu2O, N-ZnO and N-Ta2O5 semiconductors essential for Photocatalytic Solar Fuel Production

N 掺杂 N-Cu2O、N-ZnO 和 N-Ta2O5 半导体中的 P 型传导对于光催化太阳能燃料生产至关重要

• 发表时间: 2010
• 作者: T. Morikawa;et al.
• 通讯作者: et al.

Photoactivity of p-Type α-Fe2O3 Induced by Anionic/Cationic Codoping of N and Zn

• DOI: 10.7567/apex.6.041201
• 发表时间: 2013-03
• 期刊: Applied Physics Express
• 影响因子: 2.3
• 作者: T. Morikawa;T. Arai;T. Motohiro

半導体材料並びにそれを用いた光触媒体、光電極及び太陽電池

半导体材料、光催化剂、光电极以及使用其的太阳能电池

• 发表时间: 2011