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1998•The Review of High Pressure Science and TechnologyOpen access

Pressure Dependence of Time-Resolved Photoluminescence in Ordered Ga0.5In0.5P.

Naohisa Tsuji, Kazuya Takashima, Toshihiko Kobayashi, Kazuo Uchida, Jun'ichirō Nakahara

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Abstract

We have measured the time-resolved photoluminescence (TRPL) spectra of ordered Ga0. 5In0. 5P alloys at 12 K and for pressures up to ∼4 GPa. At lower pressures below ∼2 GPa, the PL spectra are found to consist of three emission bands whose decay profiles are quite different from each other. Above 3 GPa the PL spectra shows fast decays, which do not depend on the detection energy. We propose a model of type-II band alignment to explain the PL behavior observe at high pressures.

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We have measured the time-resolved photoluminescence (TRPL) spectra of ordered Ga0. 5In0. 5P alloys at 12 K and for pressures up to ∼4 GPa. At lower pressures below ∼2 GPa, the PL spectra are found to consist of three emission bands whose decay profiles are quite different from each other. Above 3 GPa the PL spectra shows fast decays, which do not depend on the detection energy. We propose a model of type-II band alignment to explain the PL behavior observe at high pressures.

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Available abstract

We have measured the time-resolved photoluminescence (TRPL) spectra of ordered Ga0. 5In0. 5P alloys at 12 K and for pressures up to ∼4 GPa. At lower pressures below ∼2 GPa, the PL spectra are found to consist of three emission bands whose decay profiles are quite different from each other. Above 3 GPa the PL spectra shows fast decays, which do not depend on the detection energy. We propose a model of type-II band alignment to explain the PL behavior observe at high pressures.

Key concepts: Photoluminescence, Spectral line, Materials science, High pressure, Analytical Chemistry (journal), Condensed matter physics, Chemistry, Physics

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