S. Lee et al., Transferred-substrate InP/InGaAs/InP double heterojunction bipolar transistors with f(max)=425 GHz, ELECTR LETT, 37(17), 2001, pp. 1096-1098
InP/InGaAs/InP double heterojunction bipolar transistors (DHBTs) with f(max
) = 425 GHz and f(tau) = 141 GHz using transferred-substrate technology are
reported. This is the highest reported f(max) for a DHBT. The breakdown vo
ltage BCCEO is 8 V at J(C) = 5 x 10(4) A/cm(2) and the DC current gain beta
is 43.