Type conversion under hydrostatic pressure in ZnSe-ZnS strained-layer superlattices | Zendy

Yoichi Yamada | Zendy; Yasuaki Masumoto | Zendy; Tsunemasa Taguchi | Zendy; K. Takemura | Zendy

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Type conversion under hydrostatic pressure in ZnSe-ZnS strained-layer superlattices

Author(s) -

Yoichi Yamada,

Yasuaki Masumoto,

Tsunemasa Taguchi,

K. Takemura

Publication year - 1991

Publication title -

physical review. b, condensed matter

Language(s) - English

Resource type - Journals

eISSN - 1095-3795

pISSN - 0163-1829

DOI - 10.1103/physrevb.44.1801

Subject(s) - superlattice , hydrostatic pressure , materials science , laser linewidth , exciton , condensed matter physics , spectral line , conduction band , layer (electronics) , band gap , optoelectronics , optics , physics , nanotechnology , electron , thermodynamics , laser , quantum mechanics , astronomy

A conversion from type-I to type-II in a ZnSe-ZnS strained-layer superlattice under hydrostatic pressure is observed. The hydrostatic-pressure dependence of the integrated intensity and the linewidth of the n=1 heavy-hole exciton emission spectra is represented by a couple of straight lines with a clear kink at about 31 kbar. Moreover, the emission peaks appear below the band-gap energy of the ZnSe well layers above 31 kbar. All of these features are well explained by the type conversion associated with the Γ-Γ conduction-band crossover between the ZnSe well and ZnS barrier layers

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