Polarization Alignment in Polycrystalline BiFeO3 Photoelectrodes for Tunable Band Bending
文献类型：期刊论文
| 作者 | Li, Xianlong3; Wang, Zhiliang3; Ji, Wenzhong4; Lu, Teng4; You, Jiakang3; Wang, Kai1,3; Liu, Gang2,5; Liu, Yun4; Wang, Lianzhou3 |
| 刊名 | ACS NANO
 |
| 出版日期 | 2023-11-10 |
| 卷号 | 17期号:22页码:22944-22951 |
| 关键词 | ferroelectricity band bending external poling semiconductor charge separationand transfer |
| ISSN号 | 1936-0851 |
| DOI | 10.1021/acsnano.3c08081 |
| 通讯作者 | Wang, Zhiliang(zhiliang.wang@uq.edu.au) ; Wang, Lianzhou(l.wang@uq.edu.au) |
| 英文摘要 | Polarization in a semiconductor can modulate the band bending via the depolarization electric field (E-dP), subsequently tuning the charge separation and transfer (CST) process in photoelectrodes. However, the random orientation of dipole moments in many polycrystalline semiconductor photoelectrodes leads to negligible polarization effect. How to effectively align the dipole moments in polycrystalline photoelectrodes into the same direction to maximize the polarization is still to be developed. Herein, we report that the dipole moments in a ferroelectric BiFeO3 photoelectrode can be controlled under external poling, resulting in a tunable CST efficiency. A negative bias of -40 voltage (V) poling to the photoelectrode leads to an over 110% increase of the CST efficiency, while poling at +40 V, the CST efficiency is reduced to only 41% of the original value. Furthermore, a nearly linear relationship between the external poling voltage and surface potential is discovered. The findings here provide an effective method in tuning the band bending and charge transfer of the emerging ferroelectricity driven solar energy conversion. |
| 资助项目 | Australian Research Council[DE210100930] ; Australian Research Council[DP200101900] ; Australian Research Council[DP200100159] ; Australian Research Council[DP230100462] ; Australian Research Council through its DECRA[FL190100139] ; Australian Research Council through its DECRA[FL210100017] ; Laureate Fellowship ; AINSE Ltd. ; Early Career Researcher Grant (ECRG)[52120105003] ; NSFC[2021YFA1500800] ; National Key R & D Program of China ; UQ Graduate School |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001110572100001 |
| 出版者 | AMER CHEMICAL SOC |
| 资助机构 | Australian Research Council ; Australian Research Council through its DECRA ; Laureate Fellowship ; AINSE Ltd. ; Early Career Researcher Grant (ECRG) ; NSFC ; National Key R & D Program of China ; UQ Graduate School |
| 源URL | [http://ir.imr.ac.cn/handle/321006/177391]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Wang, Zhiliang; Wang, Lianzhou |
| 作者单位 | 1.Curtin Univ, WA Sch Mines Minerals Energy & Chem Engn, Perth, WA 6102, Australia 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Univ Queensland, Australian Inst Bioengn & Nanotechnol, Sch Chem Engn, Nanomat Ctr, St Lucia, Qld 4072, Australia 4.Australian Natl Univ, Res Sch Chem, Canberra, ACT 2601, Australia 5.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Xianlong,Wang, Zhiliang,Ji, Wenzhong,et al. Polarization Alignment in Polycrystalline BiFeO3 Photoelectrodes for Tunable Band Bending[J]. ACS NANO,2023,17(22):22944-22951. |
| APA | Li, Xianlong.,Wang, Zhiliang.,Ji, Wenzhong.,Lu, Teng.,You, Jiakang.,...&Wang, Lianzhou.(2023).Polarization Alignment in Polycrystalline BiFeO3 Photoelectrodes for Tunable Band Bending.ACS NANO,17(22),22944-22951. |
| MLA | Li, Xianlong,et al."Polarization Alignment in Polycrystalline BiFeO3 Photoelectrodes for Tunable Band Bending".ACS NANO 17.22(2023):22944-22951. |
入库方式： OAI收割
来源：金属研究所
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