Double heterostructure
= Double heterostructure
A <double heterostructure> sandwiches one <semiconductor> between two layers of another, for example <gallium arsenide> between <aluminium gallium arsenide> layers. Suitable <band offsets> confine injected <charge carriers> centrally.<Nobel Lecture: The double heterostructure concept and its applications in physics, electronics, and technology by Zhores Ivanovich Alferov>[§II, Fig. 1, pp. 768–769]{ref}