We present experimental and theoretical studies of lattice-matched interfaces between Zn1-yMgySe and Zn1-xCdxSe wide-band gap semiconductors. Ab initio pseudopotential calculations predict lattice matching for y/x similar to1.6 and a valence band contribution to the band gap difference Q(upsilon) decreasing gradually from 0.34 to 0.27 with increasing x and y. Experimental x-ray diffraction and photoemission spectroscopy results are mostly consistent with such predictions, although non-negligible deviations of the band offsets from commutativity were observed for selected alloy compositions.
Pelucchi, E., Rubini, S., Bonanni, B., Franciosi, A., Peressi, M. (2001). Band discontinuities in ZnMgSe/ZnCdSe(001) lattice-matched heterostructures. APPLIED PHYSICS LETTERS, 78(11), 1574-1576 [10.1063/1.1350968].
Band discontinuities in ZnMgSe/ZnCdSe(001) lattice-matched heterostructures
Bonanni, B.;
2001-01-01
Abstract
We present experimental and theoretical studies of lattice-matched interfaces between Zn1-yMgySe and Zn1-xCdxSe wide-band gap semiconductors. Ab initio pseudopotential calculations predict lattice matching for y/x similar to1.6 and a valence band contribution to the band gap difference Q(upsilon) decreasing gradually from 0.34 to 0.27 with increasing x and y. Experimental x-ray diffraction and photoemission spectroscopy results are mostly consistent with such predictions, although non-negligible deviations of the band offsets from commutativity were observed for selected alloy compositions.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
