Internal photoemission phototransport measurements revealed 0.27+/-0.04 eV conduction- and valence-band discontinuities induced by a Si intralayer at p-GaAs(100)/n-GaAs(100) homojunctions. The interface dipole originating from the heterovalent character of the Si-GaAs bonds raises the bands of the GaAs overlayer above that of the GaAs subtrate.
Remco Franciscus Peter van Erp
Elison de Nazareth Matioli, Armin Jafari, Riyaz Mohammed Abdul Khadar, Minghua Zhu