TYPE CONVERSION UNDER HYDROSTATIC-PRESSURE IN ZNSE-ZNS STRAINED-LAYER SUPERLATTICES

Article

关键词: QUANTUM WELLS;    LUMINESCENCE;    FIELD;   

DOI  :  10.1103/PhysRevB.44.1801

来源: SCIE

【 摘 要 】

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 GAMMA-GAMMA-conduction-band crossover between the ZnSe well and ZnS barrier layers.

【 授权许可】

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