S. Hähle

GaAs microwave power HBTs for mobile communications

M. Weyers, G. Tränkle, M. Achouche, 1999 .

Hydrogen in carbon-doped GaAs base layer of GaInP/GaAs heterojunction bipolar transistors

M. Weyers, S. Hähle, P. Kurpas, 1997 .