title: Large scale and orientation-controllable nanotip structures on CuInS₂, Cu(In,Ga)S₂, CuInSe₂, and Cu(In,Ga)Se₂ by low energy ion beam bombardment process: growth and characterization.
abstract: One-step facile methodology to create nanotip arrays on chalcopyrite materials (such as CuInS2, Cu(In,Ga)S2, CuInSe2, and Cu(In,Ga)Se2) via a low energy ion beam bombardment process has been demonstrated. The mechanism of formation for nanotip arrays has been proposed by sputtering yields of metals and reduction of metals induced by the ion beam bombardment process. The optical reflectance of these chalcopyrite nanotip arrays has been characterized by UV-vis spectrophotometer and the efficient light-trapping effect has been observed. Large scale (∼4'') and high density (10(10) tips/cm(2)) of chalcopyrite nanotip arrays have been obtained by using low ion energy (< 1 kV), short processing duration (< 30 min), and template-free. Besides, orientation and length of these chalcopyrite nanotip arrays are controllable. Our results can be the guide for other nanostructured materials fabrication by ion sputtering and are available for industrial production as well.
authors.affiliation: Department of Materials Science and Engineering, National Tsing Hua University , Hsinchu City 30013, Taiwan.
authors.forename: Yu-Ting
authors.initials: YT
authors.lastname: Yen
authors.forename: Yi-Chung
authors.initials: YC
authors.lastname: Wang
authors.forename: Yu-Ze
authors.initials: YZ
authors.lastname: Chen
authors.forename: Hung-Wei
authors.initials: HW
authors.lastname: Tsai
authors.forename: Fan
authors.initials: F
authors.lastname: Hu
authors.forename: Shih-Ming
authors.initials: SM
authors.lastname: Lin
authors.forename: Yi-Ju
authors.initials: YJ
authors.lastname: Chen
authors.forename: Chih-Chung
authors.initials: CC
authors.lastname: Lai
authors.forename: Wenlong
authors.initials: W
authors.lastname: Liu
authors.forename: Tsang-Hsiu
authors.initials: TH
authors.lastname: Wang
authors.forename: Hwen-Fen
authors.initials: HF
authors.lastname: Hong
authors.forename: Yu-Lun
authors.initials: YL
authors.lastname: Chueh