Alternative Look at Calcium Digermanide CaGe2: A High-Performing Semimetal Transparent Conducting Material for Ge Optoelectronics
Vladimir M. Il’yaschenko,
Dmitry V. Pavlov,
Semyon A. Balagan
et al.
Abstract:Following a recently manifested guide of how to team up infrared transparency and high electrical conductivity within semimetal materials [Cui, C. et al. Prog. Mater. Sci. 2023, 136, 101112], we evaluate the applicability of the calcium digermanide (CaGe 2 ) thin-film electrodes for advanced Ge-based optical devices. Rigorous growth experiments were conducted to define the optimal annealing treatment and thickness of the Ca− Ge mixture for producing stable CaGe 2 layers with a high figure of merit (FOM) as tr… Show more
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