Germanane is used in semiconductor applications due to its enhanced electrical conductivity compared to bulk germanium. It shows promise in high-speed electronic devices and optoelectronics, including photodetectors and solar cells, because of its direct bandgap and high carrier mobility. Its layered structure also makes it suitable for integration into two-dimensional electronic systems and nanoscale devices. Additionally, germanane is being explored for use in energy storage and catalysis due to its chemical stability and surface reactivity.