Recombination Radiation from Deformed and Alloyed Germaniump−nJunctions at 80°K

The recombination radiation from germanium $p-n$ junctions ($T\sim 80°$K) which have been plastically deformed shows two bands of radiation. One band, which peaks at 0.7 ev, is an intrinsic property. The second, which peaks at about 0.5 ev, appears to be characteristic of deformed material or material in which slip has occurred. A slight change in the position of the 0.5-ev peak occurs upon annealing. The band at 0.5 ev is also found in the radiation from alloyed $p-n$ junctions. Junctions containing copper show a radiation band at 0.59 ev.