Germanium surface wet-etch-reconditioning for porous lift-off and substrate reuse

A Chapotot, B Ilahi, J Arias-Zapata, T Hanuš… - Materials Science in …, 2023 - Elsevier
Reducing both the cost and weight of Germanium (Ge)-based devices is a key concern in
extending these technologies to mainstream applications. In this framework, the porous Ge …

Potential monitoring during Ge electrochemical etching: Towards tunable double porosity layers

T Hanuš, L Mouchel, B Ilahi, A Dupuy, J Cho… - Electrochimica …, 2024 - Elsevier
Abstract Porous Germanium (PGe) has emerged as a promising material for applications
such as substrate engineering, sensing, and energy storage, thanks to its uniquely versatile …

High‐efficiency GaAs solar cells grown on porous germanium substrate with PEELER technology

V Daniel, T Bidaud, J Chretien, N Paupy, A Ayari… - Solar …, 2024 - Wiley Online Library
III–V solar cells are mainly grown on GaAs or Ge substrate, which significantly contributes to
the final cost and affects the sustainable use of these rare materials. A so‐called PEELER …

Sequential fabrication of multiple Ge nanomembranes from a single wafer: Towards sustainable recycling of Ge substrates

A Chapotot, B Ilahi, T Hanuš, G Hamon, J Cho… - Sustainable Materials …, 2024 - Elsevier
Germanium (Ge) substrates are employed for III-V multijunction solar cells (MJSCs).
However, due to limited availability and environmental impact, Ge is a critical raw material …

[HTML][HTML] A scalable, resource-efficient process for synthesis of self-supporting germanium nanomembranes

G El Jamal, G Nagy, D Primetzhofer, TT Tran - Materials Science in …, 2024 - Elsevier
The design of self-supporting membranes is gaining high interest in a broad range of
applications, from nanodevices, optoelectronics, sensing, separation, and catalysis. In this …

[HTML][HTML] Post-growth tuning of detachable Ge membranes adhesion strength via porous Ge transformation

A Ayari, F Zouaghi, B Ilahi, T Hanuš, J Cho… - Materials Science in …, 2024 - Elsevier
Single crystal germanium (Ge) membranes have recently gained increasing interest for
lightweight and low-cost solar cells and flexible optoelectronic devices. These membranes …

[HTML][HTML] Comprehensive investigation of thermal induced reorganization of porous-germanium structures

A Ayari, B Ilahi, R Arvinte, T Hanuš, L Mouchel, J Cho… - Thin Solid Films, 2024 - Elsevier
Porous germanium (PGe) substrates have recently attracted significant attention for the
development of lightweight and flexible solar cells and optoelectronic devices. A reliable …

Wafer-Scale Porous Germanium Bilayer Structure Formation by Fast Bipolar Electrochemical Etching

L Mouchel, B Ilahi, J Cho, K Dessein, A Boucherif - Thin Solid Films, 2024 - Elsevier
Abstract Recently, porous Germanium (PGe) structures have gained significant attention as
a promising engineering material for a broad range of applications due to the versatility of its …

Thermal strain relaxation of GaAs overgrown on nanovoid based Ge/Si substrate

J Henriques, B Ilahi, A Heintz, D Morris, R Arès… - Journal of Crystal …, 2023 - Elsevier
The integration of high quality III-V materials-based devices on the Si platform is considered
as an enabling path towards achieving the long-standing goal of creating low-cost/high …

[HTML][HTML] Enhancing minority carrier lifetime in Ge: Insights from HF and HCl cleaning procedures

A Chapotot, J Chrétien, O Fesiienko… - Journal of Vacuum …, 2024 - pubs.aip.org
Efficiently passivating germanium (Ge) surfaces is crucial to reduce the unwanted
recombination current in high-performance devices. Chemical surface cleaning is critical to …