title: Fabrication of Orientation-Tunable Si Nanowires on Silicon Pyramids with Omnidirectional Light Absorption.
abstract: In this work, the different orientation of SiNWs on Si pyramids by a two step MACE method have been fabricated. By tuning the structure of Ag catalyst film and controlling the concentration of H2O2or the etching temperature, the tunability of the orientation of SiNWs from <111> to <100> on Si pyramids was realized. Si structures composed of Si pyramids and SiNWs exhibit better omnidirectional light-trapping ability by multiple reflections. Si structures with structural tunability and enhanced light harvesting performance will find a wide variety of significant applications in solar cells, photodetectors, and optoelectronic devices.
authors.affiliation: Anhui Key Laboratory of Nanomaterials and Technology, and Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, China.|University of Science and Technology of China , Hefei 230026, China.
authors.forename: Zhibin
authors.initials: Z
authors.lastname: Pei
authors.affiliation: Anhui Key Laboratory of Nanomaterials and Technology, and Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, China.
authors.forename: Haibo
authors.identifier: 0000-0001-7494-1469
authors.initials: H
authors.lastname: Hu
authors.affiliation: Anhui Key Laboratory of Nanomaterials and Technology, and Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, China.
authors.forename: Shuxin
authors.initials: S
authors.lastname: Li
authors.affiliation: Anhui Key Laboratory of Nanomaterials and Technology, and Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, China.
authors.forename: Changhui
authors.initials: C
authors.lastname: Ye