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Efficient green luminescence from a type-II neighboring confinement structure realized in an AlP/GaP system |
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| Authors: | F Issiki S Fukatsu T Ohta Y Shiraki |
| Affiliation: | a Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153, Japan b Department of Pure and Applied Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153, Japan |
| Abstract: | Highly efficient green luminescence was observed from a new class of quantum confined geometry referred to as neighboring confinement structure (NCS). The photoluminescence (PL) intensity of AlP/GaP NCSs was even higher than that of a 300-period AlP/GaP superlattice (SL), and the PL of the NCS exhibited much improved immunity against thermal quenching compared to the SLs. The luminescence origin of the NCS was confirmed from the well width dependence of the PL peak shift, and the main luminescence line was assigned to no-phonon from a phonon-resolved PL study. |
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