High-performance terahertz modulators induced by substrate field in Te-based all-2D heterojunctions

https://phys.org/news/2024-04-high-terahertz-modulators-substrate-field.html

"optoelectronics with strong light-matter interactions, 2D tellurium, fast carrier, layer-dependent bandgap, extraordinarily high fast carrier mobility/ recombination, strong optical response, good air-stability... high modulation ps depth, ultrasensitive response under low pump excitation... heterojunction with Ge/Te stacking order, ultrahigh modulation depth, short-lived carrier lifetime, low loss, broad bandwidth...  power-efficient, high-speed, low insertion loss, tunable THz photonic devices... communications"