title: Quantitative analysis of photons' decaying pathways in Si nanowire arrays for highly efficient photoelectrochemical solar hydrogen generation.
abstract: We quantitatively investigated excitons' decaying pathways of photon-excited SiNW arrays to determine the reason for their low performances. It is demonstrated that excitons decay through both carriers' separation and energy transfer due to Si's indirect-band-gap feature, and these two pathways could be regulated through surface modification.
authors.affiliation: Nano-organic Photoelectronic Laboratory and Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China. wanghui@mail.ipc.ac.cn.
authors.forename: Chunyang
authors.initials: C
authors.lastname: Duan
authors.forename: Hui
authors.initials: H
authors.lastname: Wang
authors.forename: Bingchang
authors.initials: B
authors.lastname: Zhang
authors.forename: Fan
authors.initials: F
authors.lastname: Li
authors.forename: Xuemei
authors.initials: X
authors.lastname: Ou
authors.forename: Xiaohong
authors.initials: X
authors.lastname: Zhang