TY - JOUR AU - H. Gauck AU - T. Gfroerer AU - M. Renn AU - Eric Cornell AU - K. Bertness BT - Applied Physics A: Materials Science \& Processing DA - 1997-01 DO - 10.1007/s003390050455 PY - 1997 SP - 143 EP - 147 T2 - Applied Physics A: Materials Science \& Processing TI - External radiative quantum efficiency of 96% from a GaAs / GaInP heterostructure VL - 64 SN - 0947-8396 ER -