Quantum effect in the accumulation layer on field-induced photoluminescence of double-barrier resonant tunneling structures - Wu, J. S.; Chang, K. H.; Lee, C. P.; Chang, C. Y.; Liu, D. G.; Liou, D. C. (American Institute of Physics (AIP), 1991)
http://dx.doi.org/10.1063/1.105532
Keywords: U