title: InP nanopore arrays for photoelectrochemical hydrogen generation.
abstract: We report a facile and large-scale fabrication of highly ordered one-dimensional (1D) indium phosphide (InP) nanopore arrays (NPs) and their application as photoelectrodes for photoelectrochemical (PEC) hydrogen production. These InP NPs exhibit superior PEC performance due to their excellent light-trapping characteristics, high-quality 1D conducting channels and large surface areas. The photocurrent density of optimized InP NPs is 8.9 times higher than that of planar counterpart at an applied potential of +0.3 V versus RHE under AM 1.5G illumination (100 mW cm(-2)). In addition, the onset potential of InP NPs exhibits 105 mV of cathodic shift relative to planar control. The superior performance of the nanoporous samples is further explained by Mott-Schottky and electrochemical impedance spectroscopy ananlysis.
authors.affiliation: Key Laboratory of Artificial Structure and Quantum Control, Ministry of Education, Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Li
authors.forename: Maojun
authors.initials: M
authors.lastname: Zheng
authors.forename: Bin
authors.initials: B
authors.lastname: Zhang
authors.forename: Changqing
authors.initials: C
authors.lastname: Zhu
authors.forename: Faze
authors.initials: F
authors.lastname: Wang
authors.forename: Jingnan
authors.initials: J
authors.lastname: Song
authors.forename: Miao
authors.initials: M
authors.lastname: Zhong
authors.forename: Li
authors.initials: L
authors.lastname: Ma
authors.forename: Wenzhong
authors.initials: W
authors.lastname: Shen