S. Trassaert et al., BROMINE METHANOL WET CHEMICAL ETCHING OF VIA HOLES FOR INP MICROWAVE DEVICES/, Journal of vacuum science & technology. B, Microelectronics and nanometer structures processing, measurement and phenomena, 16(2), 1998, pp. 561-564
We report on the realization of via holes on InP material (for the fir
st time to our knowledge) using bromine/methanol wet chemical etching.
Typical dimension of the via holes is about 80 mu m in diameter. A sp
ecific layout has been accomplished to obtain the via hole equivalent
circuit. Measurements have been performed from 50 MHz to 30 GHz. They
exhibit losses of 0.1 dB at 30 GHz. The via hole equivalent circuit is
found to be a resistance and an inductance in serial configuration wi
th typical values of 0.4 Omega and 26 pH, respectively. (C) 1998 Ameri
can Vacuum Society. [S0734-211X(98)00702-1].