期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 5, 期 9, 页码 8213-8221出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.7b01889
关键词
Cuprous oxide; Photoelectrochemical; Double-layer; Electrodeposition; Hole transport
资金
- Basic Science Research Program through National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [2015R1A2A2A01007409]
The high performance of electrodeposited cuprous oxide (Cu2O)-based photoelectrochemical (PEC) cells has been limited due to low electrical conductivity hindering effective carrier transport to electrodes and chemically unstable properties in aqueous environments, despite their several advantages such as suitable band gap, band position, and cost-effective and environmentally friend elements. To improve the fundamental photoelectrochemical properties of photocathode Cu2O layers, particularly their photocurrent and stability, we present a simple approach using a double-layer photocathode, where the double-layer structure consists of Sb-incorporated Cu2O (Cu2O:Sb) and undoped Cu2O. The Cu2O:Sb double layer enhanced the preferred crystal growth along the [111] direction, as well as the crystallinity of the Cu2O. This microstructural change resulted in high electrical conductivity owing to high hole mobility and the suppression of instability related to surface facets. Consequently, the introduction of Cu2O:Sb led to the simultaneous roles of seed crystal and effective hole transport, and our double-layer photoelectrodes have shown good photocurrent without any metal photocatalysts and relatively better photostability without the help of protection layers.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据