材料科学
光电流
光催化
纳米孔
多孔性
光催化分解水
光电子学
分解水
半导体
制作
蚀刻(微加工)
图层(电子)
氮化物
平面的
纳米技术
复合材料
化学
医学
生物化学
替代医学
病理
催化作用
计算机图形学(图像)
计算机科学
作者
Xiaodong Li,Tianchang Hu,Shan Lin,Zhanhong Ma,Junfei Wang,Lixia Zhao
标识
DOI:10.1016/j.ijhydene.2020.11.277
摘要
Ordered nanoporous structures are promising for multifunctional devices and systems. Here, we demonstrate the controllable layer-ordered porous GaN structures using selective electrochemical etching of the n-GaN layers from n-GaN/u-GaN multilayers. The shape of layer-ordered porous structures can be modulated to dome-shaped or triangular by changing the electrochemical etching solution. Compared with the corresponding planar GaN, the photocurrent of the porous GaN increases by ~2.7 times in photocatalytic water splitting process. The enhanced photocatalytic performance is mainly attributed to the increased specific surface area and the modulation of the electric fields of incident light in the porous structures as simulated using finite-difference time-domain method. This approach can help to design and diversify highly ordered nanostructures for the III-nitride semiconductor, which lays a foundation for photocatalytic or other optoelectronic applications.
科研通智能强力驱动
Strongly Powered by AbleSci AI