Electrically-detected magnetic resonance and electroluminescence-detected magnetic resonance studies were made of double heterostructures. Two resonances were detected in the electrically-detected data. A broad resonance (about 21mT) was observed by using both techniques at g = 2.00, and this signal was attributed to a deep Zn-related acceptor. The electroluminescence-detected magnetic resonance results associated this resonance with an intense blue luminescence from the structures. It was also shown that the intensities of this resonance signature had similar bias dependences for the 2 techniques. The electrically-detected magnetic resonance measurements also resolved a second resonance which was identified with a deep donor. It was suggested that, at low bias currents, this was involved in the low-temperature emission process.

W.E.Carlos, E.R.Glaser, T.A.Kennedy, S.Nakamura: Materials Science Forum, 1995, 196-201, 25-30