Tag: Photodiode
Semiconductor grafting enables GaAs/GeSn-MQW/Ge photodiode integration
—
What the study found A lattice-mismatched GaAs/GeSn-multi-quantum well (MQW)/Ge n-i-p heterojunction photodiode was realized using semiconductor grafting. The device showed a record-low dark current density, broad spectral response, and high photoresponsivity. Why the authors say this matters The authors conclude that this grafting approach provides a way to build optoelectronic heterojunctions without the usual strict…