Anti-reflective porous Ge by open-circuit and lithography-free metal-assisted chemical etching

YY Zhang, SH Shin, HJ Kang, S Jeon, SH Hwang… - Applied Surface …, 2021 - Elsevier
Abstract Porous Ge (PGe) layer is formed on single-crystalline Ge (c-Ge) as well as in a
releasable form (eg, free-standing PGe) by lithography-free metal-assisted chemical etching …

Achieving porous germanium from both p-and n-type epitaxial Ge-on-Si via bipolar potentiostatic etching

Y Zhu, Y Zhang, B Li, GM Xia, RT Wen - Electrochimica Acta, 2023 - Elsevier
Due to the large surface specific area, tunable porosity and refractive index, porous
germanium (Ge) has wide applications in optoelectronics, photovoltaics, anode materials in …

Producing Microscale Ge Textures via Titanium Nitride‐and Nickel‐Assisted Chemical Etching with CMOS‐Compatibility

Y Liao, SH Shin, Y Jin, QJ Wang… - Advanced Materials …, 2021 - Wiley Online Library
As an emerging anisotropic wet etching technique, metal‐assisted chemical etching
(MacEtch) has been widely employed for fabricating nano‐and micro‐structures of …

Fabrication of penetrating pores in epitaxial Ge-on-Si through preferential etching along threading dislocations

Y Zhu, Y Zhang, B Li, GM Xia, RT Wen - Electrochimica Acta, 2024 - Elsevier
Abstract Epitaxial Ge-on-Si possesses a high density of threading dislocations (TDs) due to
the lattice mismatch and difference in thermal expansion coefficient. By employing the lattice …

Wide-spectrum antireflective properties of germanium by femtosecond laser raster-type in situ repetitive direct writing technique

K Wang, Y Zhang, J Chen, Q Li, F Tang, X Ye, W Zheng - Coatings, 2024 - mdpi.com
A femtosecond laser raster-type in situ repetitive direct writing technique was used for the
fabrication of anti-reflective microhole structures in Germanium (Ge) in the visible near …

Chemical wet etching of germanium assisted with catalytic-metal-particles and electroless-metal-deposition

K Ito, D Yamaura, T Ogino - Electrochimica Acta, 2016 - Elsevier
Ge nanostructures were fabricated by wet processes based on etching assisted with the
catalytic-metal-particles and the electroless-metal-deposition under various conditions. In …

Large‐Scale Formation of Uniform Porous Ge Nanostructures with Tunable Physical Properties

T Hanuš, J Arias‐Zapata, B Ilahi… - Advanced Materials …, 2023 - Wiley Online Library
Porous germanium (PGe) nanostructures attract a lot of attention for various emerging
applications due to their unique properties. Consequently, there is an increasing need for …

Shallow V-shape nanostructured pit arrays in germanium using aqua regia electroless chemical etching

I Chaabane, D Banerjee, O Touayar, SG Cloutier - Materials, 2017 - mdpi.com
Due to its high refractive index, reflectance is often a problem when using Germanium for
optoelectronic devices integration. In this work, we propose an effective and low-cost nano …

Digital Etch Technique for Forming Ultra-Scaled Germanium-Tin (Ge1−xSnx) Fin Structure

W Wang, D Lei, Y Dong, X Gong, ES Tok, YC Yeo - Scientific reports, 2017 - nature.com
We developed a new digital etch process that allows precise etching of Germanium or
Germanium-tin (Ge1− x Sn x) materials. The digital etch approach consists of Ge1− x Sn x …

Metal-assisted chemical etching of Ge surface and its effect on photovoltaic devices

S Lee, H Choo, C Kim, E Oh, D Seo, S Lim - Applied Surface Science, 2016 - Elsevier
Ge surfaces were etched by means of metal-assisted chemical etching (MaCE). The
behavior of the MaCE reaction in diluted H 2 O 2 was compared with that of a conventional …