MOCVD grown δ-doped InGaP/GaAs heterojunction bipolar transistor W.C. Liu, H.J. Pan, S.Y. Cheng, W.C. Wang, J.Y. Chen, S.C. Feng and K.H. Yu J. Phys. IV France, 09 PR8 (1999) Pr8-1163-Pr8-1169 DOI: 10.1051/jp4:19998145