Spectral behavior of the emission around 3.31 eV (A-line) from ZnO nanocrystals |
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Authors: | S.S. Kurbanov T.W. Kang |
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Affiliation: | a Quantum-Functional Semiconductor Research Center, Dongguk University, Seoul 100715, Republic of Korea b Heat Physics Department, Uzbekistan Academy of Sciences, Tashkent 700135, Uzbekistan |
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Abstract: | The emission at around 3.31 eV (A-line) from three types of ZnO nanocrystals with different particle sizes (10-1000 nm) was studied. The photoluminescence (PL) measurements were performed under different excitation densities and at different temperatures. The A-line emission exhibited a strong dependence on temperature and excitation power density. With increasing excitation density and temperature overlapping of the closely spaced first longitudinal optical (LO) phonon replica of free excitons by the A-line emission was observed. |
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Keywords: | Photoluminescence ZnO Nanocrystals |
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