Few-Layer Thin-Film Metallic Glass-Enhanced Optical Properties of ZnO Nanostructures

Bohr-Ran Huang; Jinn P Chu; Cheng-Liang Hsu; You-Syuan Chen; Chia-Hao Chang

doi:10.1021/acsami.7b13121

Few-Layer Thin-Film Metallic Glass-Enhanced Optical Properties of ZnO Nanostructures

ACS Appl Mater Interfaces. 2017 Nov 15;9(45):39475-39483. doi: 10.1021/acsami.7b13121. Epub 2017 Nov 1.

Authors

Bohr-Ran Huang¹, Jinn P Chu², Cheng-Liang Hsu³, You-Syuan Chen¹, Chia-Hao Chang²

Affiliations

¹ Graduate Institute of Electro-Optical Engineering and Department of Electronic and Computer Engineering, National Taiwan University of Science and Technology , Taipei 106, Taiwan.
² Department of Materials Science and Engineering, National Taiwan University of Science and Technology , Taipei 10607, Taiwan.
³ Department of Electrical Engineering, National University of Tainan , Tainan 700, Taiwan.

PMID: 29064666
DOI: 10.1021/acsami.7b13121

Abstract

A few layers of Cu-based (Cu₄₇Zr₄₂Al₇Ti₄) thin-film metallic glasses (TFMGs) were sputtered on hydrothermally synthesized ZnO nanowires/glass and ZnO nanotubes/glass to fabricate UV photodetectors. The few layers of Cu-based TFMG are ultrathin at ∼0.98 nm and have a noncrystalline metal structure according to X-ray diffraction, Raman, photoluminescence, and high-temperature transmission electron microscopy verification. The photoresponse performance of the coated few-layers Cu-TFMG samples was enhanced 1680-7700% compared with the noncoated sample. The few-layers Cu-TFMG has high transmittance ∼90% in the visible band and creates a large capacitor to absorb UV photocurrent and release dark current.

Keywords: UV photodetector; ZnO nanotubes; ZnO nanowires; metallic glass; thin film.